Brakes - Repair BMW M6 E63/E64

34 00 ... General Information

The brake system is one of the most important safety systems on any motor vehicle. It is therefore essential to act with utmost care when working on the brake system and to follow the instructions below.

General

1. Ensure cleanliness and only use rags which do not lose lint.
2. Wash away or vacuum up brake dust, do not clear it away using compressed air. This dust is a health hazard.
3. Ensure that no oils or grease enter the brake system: these substances would cause complete failure of the entire brake system.
4. When cleaning brake components with brake cleaner (refer to BMW Parts Service), do not allow brake cleaner to get into the brake system.
5. Even the most minute traces of brake cleaner must be avoided.

Brake fluid

1. Replace brake fluid at least every two years.
2. Never re-use drained brake fluid.
3. Always use BMW-approved brake fluid, refer to «BRAKES - OPERATING FLUIDS»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-operating-fluids) .
4. Always dispose of brake fluid in approved receptacles, refer to BMW Service Workshop Planning documentation.
5. Do not allow brake fluid to drain into drain pipes, into the outside environment or into unsuitable facilities. This would create the risk of groundwater contamination since brake fluid is classed as a fluid that is hazardous to water.
6. Do not allow brake fluid to come into contact with paintwork as this will destroy the paint.
7. Brake fluid must not be allowed to remain on bare skin too long in order to avoid skin problems. Wash skin coated with brake fluid with water and soap.
8. If brake fluid makes contact with eyes, immediately flush with large quantity of clean water and visit eye doctor.

Wheel brakes

1. Brake linings: Brake linings must be replaced when the warning threshold of the brake lining wear indicator is reached. Refer to «BRAKES - TECHNICAL DATA»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data) . Brake linings must always be replaced on both sides of any axle. The friction surfaces of the brake linings must not come into contact with oils or greases. The brake linings must be replaced if they are fouled by such substances. In the case of rotation-dependent brake linings, make sure the arrow marking points in the direction of rotation of the brake disk for when the vehicle is moving forward. Brake linings with left/right markings must be fitted on the relevant side of the vehicle. One-sided angled areas on the brake linings must be located on the disk contact side of the brake caliper for when the vehicle is moving forward.
2. Brake discs: Brake disks must not be scored or cracked. Furthermore, minimum brake disk thickness, disk runout, parallelism and surface roughness of the friction surfaces must not exceed or drop below the permitted values. Refer to «BRAKES - TECHNICAL DATA»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data) . Always strip preservative off new parts before installation. With the rear brake discs, also strip preservative off brake drum on parking brake.
3. Brake drums: Brake drums must not be scored or cracked. Furthermore, the maximum drum inside diameter, radial runout and surface roughness of the friction surfaces must not exceed or drop below the permitted values. Refer to «BRAKES - TECHNICAL DATA»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data) . Always strip preservative off new parts before installation.
4. Brake calipers: Only approved pastes on the basis of glycine must be used for repairs on brake calipers. All moving parts on the brake caliper must move freely: note grease specifications. Use only BMW-approved lubricants to grease caliper guides (refer to «BRAKES - OPERATING FLUIDS»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-operating-fluids) ).

Brake lines, brake hoses: brake lining wear indicator

1. Brake lines and brake hoses must be correctly routed and must not abut with body or components in a way which would cause chafing.
2. To prevent damage, release and tighten brake line couplings with a special brake line wrench only.
3. The system must be bled each time any brake lines have been detached.
4. All connection points must be checked for leaks.
5. Only tighten down brake hoses on the front axle when wheels are in straight-ahead position.
6. Close open connections on brake lines and individual components to prevent dirt from entering the brake system.
7. Observe tightening torques when tightening down brake line screw connections. Tightening torque, 34 32 1AZ . See «34 32 BRAKE LINES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-tightening-torques__34-32-brake-lines)

Wheel-slip control system

The slip control system is basically maintenance-free.

However, be sure to adhere to the following

1. When carrying out welding work with electric welding equipment, be sure to disconnect the plug from the electronic control unit (ignition turned off).
2. During painting work, the control unit may be subjected for brief periods to loads of max. 95°C and for long periods (approx. 2 hours) to loads of max. 85°C.
3. Tighten down the battery terminals completely.
4. The brake lines on the hydraulic unit must not be mixed up; if necessary, mark them before they are removed and after completing repairs perform the mix-up check with the DIS Tester.

34 00 ... General Information On Braking In New Brake Discs/Brake Pads

34 00 009 Checking Brakes On Test Stand

Necessary preliminary tasks

1. Check tires for damage
2. Check tire treads
3. Check tire pressure

In the case of vehicles with ASC+T or DSC, the system must be deactivated with the switch. The ASC+T or DSC telltale and warning light must light up in the instrument cluster!

The brakes must be at normal operating temperature. For this purpose, gently warm up the brake disks/drums while dry by braking the vehicle several times.

E65 and E66: Carry out parking brake function check . See 34 10 014 Adjusting Handbrake .

Scheme 1

34 00 010 Checking Thickness Of Brake Pad

Special tools required

1. 34 1 260

Note. The thickness of the outer brake pads can be determined without removing the wheels. If necessary, move car until opening for brake pad wear indicator (brake pad) can be seen through rim styling.

Insert special tool 34 1 260 through rim into opening for brake pad wear indicator. See 34 1 260 BRAKE LINING MEASURING GAUGE

Press special tool onto brake pad. Slide ring (1) in direction of arrow up to stop and read off measured value.

Note. Brake disk Brake pad with backplate Safe limit for lining wear, front brake . See 34 11 FRONT BRAKE E63 Safe limit for lining wear, rear brake . See 34 21 REAR BRAKE DISCS E63

Scheme 2

34 00 012 Parking brake function check

Note. If deviations are identified during the following check, the parking brake must be adjusted

Drive vehicle onto chassis dynamometer. Warm up brakes. Check handbrake. 0th tooth (handbrake released)

1. Vehicles with manual transmission: Shift lever in neutral position.
2. Vehicles with automatic transmission: Selector lever in "N" position. Without locking differential =150 N. With locking differential = 200 N (possibly odd display).

1st tooth: No increase in braking force with regard to 0th tooth. Indicator lamp can be lit.

2nd tooth: Indicator lamp must be lit.

3rd tooth: Increase in braking force.

5th tooth: The brake force display must have reached = 400 N.

Checking brake force differential at wheel

Apply handbrake until a wheel circumferential force (measured on brake test stand) of min. 1000 N is reached.

Max. permitted brake force differential right/left =35 % (referred to greater brake value).

It must be possible to brake with locked wheels with the handbrake.

34 00 017 Checking Brake Booster (Low-Pressure Test)

Special tools required

1. 34 3 100

Necessary preliminary tasks

1. Remove left microfilter housing. . See «64 31 061 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER HOUSING LOWER SECTION»(/bmw/m6/e63e64-2005-2010/remont/automatic-hvac-system/#heating-and-air-conditioning-repair__64-31-061-removing-and-installingreplacing)

Scheme 3

1. Detach hose from connection piece. Install vacuum tester 34 3 100 between connection piece and vacuum hose of non-return valve. See «34 3 100 BRAKE BOOSTER TESTER»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-special-tools__34-3-100-brake-booster-tester)
2. Start engine.
3. Check buildup of partial vacuum.
4. Switch off engine.
5. Press the brake pedal to set a vacuum pressure of not more than 0.8 bar and wait for the value to stabilize.
6. When the brake pedal is not pressed, the vacuum pressure is permitted to drop over a test period of 1 minute by max. 0.06 bar.

If specified values are not reached

1. Check line connections for vacuum seal.
2. Replace non-return valve.
3. Check seal between brake booster and brake master cylinder (sealing ring) for perfect condition and correct seating.
4. If the specified values are not achieved when the test is repeated, you must replace the brake booster.

34 00 025 Replacing Fluid In ABS/ASC+T Brake System

Necessary preliminary tasks

1. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information)
2. Remove lower section of microfilter housing . See «64 31 061 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER HOUSING LOWER SECTION»(/bmw/m6/e63e64-2005-2010/remont/automatic-hvac-system/#heating-and-air-conditioning-repair__64-31-061-removing-and-installingreplacing)

Connect bleeder unit to expansion tank and switch on.

Note. Check relevant Operating Instructions for each device. Charging pressure should not exceed 2 bar.

Scheme 4

Flushing Brake System Completely

Connect bleeder hose with collecting tray to bleeder valve on rear right brake caliper.

Open bleeder valve and purge until clear, bubble-free brake fluid emerges.

Close bleed valve.

Follow same procedure on rear left, front right and front left wheel brake.

Scheme 5

Note. The clutch slave cylinder must also be scavenged in vehicles with manual transmissions.

Switch off brake fluid changer and remove from expansion tank.

Check brake fluid level.

Close expansion tank.

Note. Pay attention to rubber seal (1) in sealing cap.

Scheme 6

34 00 050 Bleeding Brake System With DSC

Necessary preliminary tasks

1. Remove lower section of microfilter housing . See «64 31 061 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER HOUSING LOWER SECTION»(/bmw/m6/e63e64-2005-2010/remont/automatic-hvac-system/#heating-and-air-conditioning-repair__64-31-061-removing-and-installingreplacing)
2. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information)

Observe the filling and bleeding instructions when replacing or repairing

1. Brake master cylinder
2. Hydraulic unit
3. Components and connecting lines which are fitted between these assemblies.

Connect bleeder unit with max. 2 bar filling pressure.

A second person is needed to help carry out this work.

1. Connect BMW Diagnosis and Information System (DIS).
2. Select path: Service functions - Chassis/Suspension - Slip control systems - Bleeding procedure.
3. Connect bleeder unit to expansion tank and switch on.

Connect bleeder hose with collecting tray to bleeder valve on rear right brake caliper.

Open bleeder valve and purge until clear, bubble-free brake fluid emerges.

Close bleed valve.

Follow same procedure on rear left, front right and front left wheel brake.

Bleeding Rear-Axle Brake Circuit

Connect bleeder hose with collecting tray to bleeder valve on rear right brake caliper.

Close bleeder valve.

Run through bleeding routine with BMW Diagnosis and Information System (DIS) with bleeder valve open.

After completing routine, press brake pedal 5 times to floor, clear and bubble-free brake fluid must flow out.

Close bleed valve.

Repeat procedure at rear left.

Bleeding Front-Axle Brake Circuit

Connect bleeder hose with collecting tray to bleeder valve on front right brake caliper.

Close bleeder valve.

Run through bleeding routine with BMW Diagnosis and Information System (DIS) with bleeder valve open.

After completing routine, press brake pedal 5 times to floor, clear and bubble-free brake fluid must flow out.

Close bleed valve.

Repeat procedure at front left.

Scheme 7

Switch off brake fluid changer and remove from expansion tank.

Check brake fluid level.

Close expansion tank.

Note. Pay attention to rubber seal (1) in sealing cap.

34 10 014 Adjusting handbrake

Note. Perform inspection in the following manner: When 1st ratchet is engaged, no braking force should be exerted. The difference in wheel circumferential forces between the left and right wheels may deviate by max. 30 % from the greater value (measured on brake analyzer). In event of larger deviations of wheel circumferential force: carry out readjustment. Braking with locked wheels must be possible with the parking brake. The parking brake must be reset if the actuation stroke is greater than 10 teeth.

Note. Accurate adjustment of the parking brake is only possible if the parking brake Bowden cables and all moving parts on the parking brake move easily and function correctly. Basic setting of the parking brake is required whenever: When replacing parking brake shoes. When replacing brake discs. In event of excessive actuation stroke (10 teeth). When replacing parking brake Bowden cables.

1. Setting instruction for brake shoes (basic setting) Lock adjuster unit (ASZE). Actuate parking brake lever. Screw in special tool 32 1 030 partially. Press stop (1) of adjusting spring back to such an extent that retaining hook (2) engages in stop (1).

Identifying Stop Of Adjusting Spring. Scheme 8

Completely unscrew one wheel stud on each rear wheel. Installation: Tightening torque 36 10 1AZ. Turn wheel until adjustment screw is visible in tapped hole.

Completely Unscrew One Wheel Stud On Each Rear Wheel. Scheme 9

Turn adjusting screw with a screwdriver until the wheel is no longer able to turn. Then unfasten the adjusting screw 8 notches.

Turn Adjusting Screw With A Screwdriver Until Wheel Is Unable To Turn. Scheme 10

Unlock adjuster unit (ASZE). Lever restraint hook (2) outwards with a suitable screwdriver (1). Restraint hook (2) must disengage from stop of adjusting spring.

Lever Restraint Hook (2) Outwards Using Screwdriver. Scheme 11

2. Setting instruction for parking brake Bowden cables

The parking brake lever must be applied 5 times to approx. 400 N actuating force

0th tooth (parking brake released)

Vehicles with manual transmission: Shift lever in neutral position.

Vehicles with automatic transmission: Selector lever position "N".

1. Without locking differential < or =150 N.
2. With locking differential < or = 200 N (possibly odd display).

1st tooth: No increase in braking force with regard to 0th tooth. Indicator lamp can be lit.

2nd tooth: Indicator lamp must be lit.

3rd tooth: Increase in braking force.

5th tooth: The brake force display must have reached > or = 400 N.

Checking brake force differential at wheel

Apply parking brake until a wheel circumferential force (brake force display) of min. 1000 N is reached.

Max. permitted brake force differential right/left < or = 35 % (referred to greater brake value).

3. Braking in the duo-servo parking brake

The following braking-in procedures are applicable in case of insufficient braking effect or after replacing brake discs and/or brake shoes.

3.1 On brake analyzer

Apply parking brake lever until wheel circumferential force at first wheel is 800 N. Lock parking brake lever in next lower tooth. Release parking brake lever after approx. 2 minutes.

3.2 When driving on road

(If possible inside the company grounds or on an unused road) At approx. 40 km/h apply parking brake lever until a braking effect can be felt. Pull parking brake lever to next notch and drive on for approx. 400 m. A basic requirement is that parking brake is adjusted uniformly.

Note. If necessary, repeat braking-in procedure.

Scheme 12

34 11 000 Removing and Installing/Replacing Brake Linings On Both Front Disc Brakes

Special tools required

1. 34 1 080
2. 34 1 280
3. 34 6 320

Necessary preliminary tasks

1. Remove wheels . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000) )

Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

If necessary, when replacing linings, reset CBS display in accordance with factory specification.

Note. After completing work: Fully depress brake pedal several times so that brake linings contact brake discs. When installing new brake linings at front and rear axles, brake fluid level must be brought up to "MAX" marking. Read and comply with notes on braking in new brake discs/brake pads . See 34 00 ... GENERAL INFORMATION ON BRAKING IN NEW BRAKE DISCS/BRAKE PADS

Lever out retaining spring (1) in direction of arrow towards rear.

Installation

Attach retaining spring (1) first at top and bottom and then allow retaining lug (2) to engage in recess of brake caliper housing.

Scheme 13

Remove plastic plugs (1).

Scheme 14

Left

Pull brake lining wear sensor (1) towards rear out of lining.

If necessary, replace brake lining wear sensor . See 34 35 001 REPLACING A BRAKE LINING SENSOR

Release guide screws (2) with special tool 34 1 080 . See 34 1 080 BIT INSERT

Withdraw brake caliper backwards.

Installation

Only clean guide screws; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

Tightening torque 34 11 3AZ . See 34 11 FRONT BRAKE

Scheme 15

Press back brake linings and piston with special tool 34 6 320 . See 34 6 320 LEVER

Scheme 16

Press brake linings inwards and remove.

The two brake linings are seated with a spring in the piston or in the brake caliper housing and must not be mixed up.

In the event of one-sided brake lining wear, do not change brake linings round.

Observe minimum thickness of brake linings . See 34 11 FRONT BRAKE E63

Clean brake linings.

Do not apply grease to brake pad backplate.

Scheme 17

Check minimum brake disc thickness

1. Position special tool 34 1 280 at three measuring points in area (1) and measure. See «34 1 280 SLIDING CALIPER»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-special-tools__34-1-280-sliding-caliper)
2. Compare measurement result and lowest value with setpoint value . See «34 11 FRONT BRAKE E63»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data__34-11-front-brake-e63)

New brake linings may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH) . See 34 11 FRONT BRAKE E63

Scheme 18

Check dust sleeve (1) for damage and replace if necessary.

Clean contact face (2) of brake piston and apply a thin coating of anti-squeak compound .

Scheme 19

Clean mounting faces (1) and (2) of brake lining hammer heads/brake caliper housing and coat with anti-squeak compound .

Note. Grease contact surfaces on brake caliper at top and bottom.

Scheme 20

Clean mounting face (3) of brake caliper and apply a thin coating of anti-squeak compound .

Scheme 21

Clean brake caliper holder at hammerhead guides and apply a thin coating of anti-squeak compound.

Refer to BRAKES - OPERATING FLUIDS .

Scheme 22

34 11 220 Removing and Installing/Replacing Both Front Brake Discs

Special tools required

1. 34 1 280

Necessary preliminary tasks

1. Remove wheels . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000)
2. If necessary, remove and clean brake linings . See «34 11 000 REMOVING AND INSTALLING/REPLACING BRAKE LININGS ON BOTH FRONT DISC BRAKES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-11-000-removing-and-installingreplacing)

After completing work, read and comply with notes on braking in new brake discs/brake pads . See 34 00 ... GENERAL INFORMATION ON BRAKING IN NEW BRAKE DISCS/BRAKE PADS

Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

Check minimum brake disc thickness

1. Position special tool 34 1 280 at three measuring points in area (1) and measure. See «34 1 280 SLIDING CALIPER»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-special-tools__34-1-280-sliding-caliper)
2. Compare measurement result and lowest value with setpoint value . See «34 11 FRONT BRAKE E63»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data__34-11-front-brake-e63)

New brake linings may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH) . See 34 11 FRONT BRAKE E63

Always replace brake discs in pairs.

If the brake discs are replaced, you must also fit new brake linings.

Release screws (1), remove brake caliper and tie up.

Installation

Tightening torque 34 11 2AZ . See 34 11 FRONT BRAKE

Note. Brake hose remains connected. If the brake hose was pulled from the mounting fixture during removal, make sure it is positively attached when installed!

Scheme 23

Unscrew bolts and take off brake disc.

Installation

Tightening torque 34 11 1AZ . See 34 11 FRONT BRAKE

Clean contact surface of brake disc at wheel hub thoroughly and remove traces of corrosion if necessary. Unevenness on contact surface may result in distortion of brake disc!

Scheme 24

Scheme 25

34 11 220 Removing and installing/replacing both front brake discs (S85)

Special tools required

1. 34 1 280

Necessary preliminary tasks

1. Remove wheels . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000)
2. If necessary, remove and clean brake linings . See «34 11 000 REMOVING AND INSTALLING/REPLACING BRAKE LININGS ON BOTH FRONT DISC BRAKES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-11-000-removing-and-installingreplacing) . After completing work, read and comply with «notes on braking in new brake discs/brake pads»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information-on) .

Check minimum brake disc thickness

1. Position special tool 34 1 280 at three measuring points in area (1) and measure.
2. Compare measurement result and lowest value with setpoint value. See «11 - FRONT BRAKES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data) .

Scheme 26

Release screws (1), remove brake caliper and tie up.

Scheme 27

Note. Brake hose remains connected. If the brake hose was pulled from the mounting fixture during removal, make sure it is positively attached when installed!

Installation: Tightening torque, see 34 11 2AZ in 11 FRONT BRAKES .

Release screws (1) and remove brake disc (2).

Scheme 28

Installation: Thoroughly clean contact surface of brake disc on wheel hub and guide pins (3), remove traces of corrosion if necessary.

Brake disc can only be mounted in one position. Replace screws. Tightening torque, see 34 11 1AZ in 11 FRONT BRAKES .

34 11 250 Removing and Installing/Replacing A Brake Carrier/Brake Guard Plate At Front

Necessary preliminary tasks

1. Remove front brake disks See «34 11 220 REMOVING AND INSTALLING/REPLACING BOTH FRONT BRAKE DISCS»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-11-220-removing-and-installingreplacing)

Release screws (1) and remove brake guard plate (2).

Installation

Tightening torque 34 11 5AZ . See 34 11 FRONT BRAKE

Scheme 29

34 11 519 Removing and Installing/Replacing Left Or Right Front Brake Caliper

Necessary preliminary tasks

1. Remove wheels . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000) )

Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

After completing tasks, bleed brake system . See 34 00 025 REPLACING FLUID IN ABS/ASC+T BRAKE SYSTEM

Apply pedal prop and depress brake pedal slightly. This prevents brake fluid from emerging from the expansion tank and air from entering the brake system after the brake lines have been detached.

Scheme 30

Left side: Disconnect plug connection for wear indicator.

Release brake hose on brake caliper.

Slacken connection for brake hose and brake line.

Installation

Tighten brake hose on brake caliper.

Tightening torque 34 32 4AZ . See 34 32 BRAKE LINES

Move steering to straight-ahead position.

Screw brake hose to brake line, ensuring that brake hose is not twisted.

Tightening torque 34 32 1AZ . See 34 32 BRAKE LINES

Unscrew bolts (1) and remove brake caliper.

Installation

Tightening torque 34 11 2AZ . See 34 11 FRONT BRAKE

Scheme 31

34 11 552 Overhauling Left Or Right Front Brake Caliper (Brake Caliper Removed)

Special tools required

1. 34 1 133

Note. Use repair kit, refer to BMW Parts Service.

Bear in mind that guide sleeves and screws come in different lengths

1. 16" brake system: two short guide sleeves with two short screws.
2. 17" brake system: one long guide sleeve and one short guide sleeve with one long screw and one short screw.
3. 18" brake system: two long guide sleeves with two long screws.

Take off plastic caps (1).

Unscrew guide screws (2).

Installation

Only clean guide screws; do not grease. Check guide bolts, replace if necessary.

E65 and E66

Tightening torque: 34 11 3AZ . See 34 11 FRONT BRAKE

Scheme 32

Dismantle brake caliper and remove brake linings.

Installation

Press brake lining fully outwards and insert spring (4).

Scheme 33

Carefully force piston out through connection bore with compressed air.

To protect piston, place a protective plate (e.g. hard wood or hard felt) in caliper recess.

Do not grip piston with fingers - risk of trapping!

Scheme 34

Check guide sleeves (5), fitting repair-kit guide sleeve if necessary.

Scheme 35

Remove sealing ring carefully with a plastic needle.

Clean cylinder bores and parts with alcohol and dry with compressed air.

Thoroughly inspect cylinder bore, piston and flange surfaces.

Machining of cylinders and pistons is not permitted.

Scheme 36

Installation

Apply a light coat of Ate brake cylinder paste to cylinder bore, piston and sealing sleeve

Refer to BRAKES - OPERATING FLUIDS .

Install sealing cover in rear annular groove of cylinder bore.

Press in piston with a hardwood board.

Scheme 37

Press on dust protection sleeve evenly up to stop with special tool 34 1 133 .

Installation

The area between dust protection sleeve and brake caliper housing must be kept dry so as to ensure correct seating for the dust protection sleeve.

Keep Ate brake cylinder paste or brake fluid away from this area.

Make sure dust protection sleeve is correctly seated on piston.

Scheme 38

34 11 667 Precision-Turning Both Front Brake Discs On Both Sides

Stationary brake disc lathe

In the case of stationary brake disc lathes, the brake disc must be removed .

Please refer to the lathe manufacturer's instruction manual for the exact procedure.

Scheme 39

Mobile brake disc lathe

In the case of mobile brake disc lathes, only the brake calliper has must be removed .

The brake discs remain on the car.

Please refer to the lathe manufacturer's instruction manual for the exact procedure.

Scheme 40

After fine-grinding the brake discs, measure the thickness difference inside the braking surfaces at 8 points with an external micrometer.

Scheme 41

Scheme 42

34 21 171 Removing and Installing/Replacing a Brake Carrier/Brake Guard at Rear

Necessary preliminary tasks

1. Remove expander lock . See «34 41 250 REMOVING AND INSTALLING/REPLACING EXPANDER LOCK FOR HANDBRAKE SHOES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-41-250-removing-and-installingreplacing)
2. Remove wheel hub . See «33 41 151 REPLACING LEFT OR RIGHT WHEEL BEARING ON REAR AXLE SHAFT»(/bmw/m6/e63e64-2005-2010/remont/axle-shafts/#rear-axle-repair__33-41-151-replacing-left-or)

Release screws (1) and remove brake carrier (2).

Installation

Tightening torque 34 21 6AZ . See 34 21 REAR BRAKE

Scheme 43

34 21 200 Removing and Installing or Replacing Brake Linings On Both Rear Disc Brakes

Special tools required

1. 34 1 050
2. 34 1 080
3. 34 1 280

Necessary preliminary tasks

1. Remove wheels . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000)

Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

If necessary, when replacing linings, reset CBS display in accordance with factory specification.

Note. After completing work: Fully depress brake pedal several times so that brake linings contact brake discs. When installing new brake linings at front and rear axles, brake fluid level must be brought up to "MAX" marking. Read and comply with notes on braking in new brake discs / brake pads . See 34 00 ... GENERAL INFORMATION ON BRAKING IN NEW BRAKE DISCS/BRAKE PADS )

Remove plastic plugs (1).

Right side

Disconnect plug connection for brake lining wear sensor.

If necessary, replace brake lining wear sensor.

Scheme 44

Release guide screws (2) with special tool 34 1 080 . See 34 1 080 BIT INSERT

Installation

Only clean guide screws; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

Tightening torque 34 21 5AZ . See 34 21 REAR BRAKE

Scheme 45

Lift out retaining spring (3).

Withdraw brake caliper backwards.

Scheme 46

Turn piston fully back with special tool 34 1 050 . See 34 1 050 FIXTURE

Scheme 47

Remove outer brake lining.

Inner brake lining is located with its spring in the piston.

If the brake linings are worn on one side, they must not be mixed up!

Observe minimum thickness of brake linings .

Clean brake linings.

Do not apply grease to brake pad backplate.

Scheme 48

Check minimum brake disc thickness

1. Position special tool 34 1 280 at three measuring points in area (1) and measure. See «34 1 280 SLIDING CALIPER»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-special-tools__34-1-280-sliding-caliper)
2. Compare measurement result and lowest value with setpoint value . See «34 21 REAR BRAKE DISCS E63»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data__34-21-rear-brake-discs-e63)

New brake linings may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH) . See 34 21 REAR BRAKE DISCS E63

Check dust sleeve (1) for damage and replace if necessary.

Clean contact face (2) of brake piston and apply a thin coating of anti-squeak compound .

Scheme 49

Clean mounting faces (1) and (2) of brake lining hammer heads/brake caliper housing and coat with anti-squeak compound .

Clean contact face (3) of brake caliper and apply a thin coating of anti-squeak compound .

Clean brake caliper mounting bracket at hammer head guides and apply a thin coating of anti-squeak compound .

34 21 320 Removing and Installing Or Replacing Both Rear Brake Discs

Special tools required

1. 34 1 280

Necessary preliminary tasks

1. Remove wheels . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000)
2. If necessary, remove and clean brake linings . See «34 21 200 REMOVING AND INSTALLING OR REPLACING BRAKE LININGS ON BOTH REAR DISC BRAKES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-21-200-removing-and-installing)

E65 and E66: Release parking brake (pushbutton to left of steering wheel).

After completing work

1. Adjust handbrake (not for E65 and E66)
2. Read and comply with notes on braking in new brake discs/brake pads . See «34 00 ... GENERAL INFORMATION ON BRAKING IN NEW BRAKE DISCS/BRAKE PADS»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information-on)

Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

Check minimum brake disc thickness

1. Position special tool 34 1 280 at three measuring points in area (1) and measure. See «34 1 280 SLIDING CALIPER»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-special-tools__34-1-280-sliding-caliper)
2. Compare measurement result and lowest value with setpoint value . See «34 21 REAR BRAKE DISCS E63»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data__34-21-rear-brake-discs-e63)

New brake linings may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH) . See 34 21 REAR BRAKE DISCS E63

Always replace brake discs in pairs.

If the brake discs are replaced, you must also fit new brake linings.

Release screws (1), remove brake caliper and tie up.

Note. Brake hose remains connected.

Installation

Tightening torque 34 21 3AZ . See 34 21 REAR BRAKE

Scheme 50

Unscrew bolts and take off brake disc.

Installation

Tightening torque 34 21 1AZ . See 34 21 REAR BRAKE

Clean contact surface of brake disc at wheel hub thoroughly and remove traces of corrosion if necessary. Unevenness on contact surface may result in distortion of brake disc!

34 21 320 Removing and installing or replacing both rear brake discs (S85)

Special tools required

1. 34 1 280

Necessary preliminary tasks

1. Remove wheels . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000)
2. If necessary, «remove and clean brake linings»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-21-200-removing-and-installing) . After completing work, read and comply with «notes on braking in new brake discs/brake pads»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information-on) .

After completing work

1. Adjust parking brake.
2. Read and comply with «notes on braking in new brake discs / brake pads»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information-on) .

Check minimum brake disc thickness

1. Position special tool 34 1 280 at three measuring points in area (1) and measure.
2. Compare measurement result and lowest value with setpoint value. See «21 - REAR BRAKES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-technical-data) .

Scheme 51

Release screws (1), remove brake caliper and tie up.

Note. Brake hose remains connected.

Installation: Tightening torque, see 34 21 3AZ in 34 21 REAR BRAKE .

Release screws (1) and remove brake disc (2).

Scheme 52

Make sure contact surfaces between wheel hub and brake disc are absolutely clean. Replace screws. Tightening torque, see 34 21 1AZ in 34 21 REAR BRAKE .

34 21 745 Removing and Installing Or Replacing Left Or Right Rear Brake Caliper

Necessary preliminary tasks

1. Remove wheels . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000)

Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

After completing tasks, bleed brake system . See 34 00 025 REPLACING FLUID IN ABS/ASC+T BRAKE SYSTEM

Apply pedal prop and depress brake pedal slightly. This prevents brake fluid from emerging from the expansion tank and air from entering the brake system when the brake lines are opened.

Right side: Disconnect plug connection for brake lining wear sensor.

Unfasten screws (1).

Installation

Tightening torque 34 21 3AZ . See 34 21 REAR BRAKE

Release brake hose (2).

Installation

Tightening torque 34 32 5AZ . See 34 32 BRAKE LINES

Unfasten brake hose at connection point to brake line.

Tightening torque 34 32 1AZ . See 34 32 BRAKE LINES

First tighten the brake hose on the brake cover, then tighten connection on brake line.

Install brake hose without torsional stress.

Pull off fist caliper towards rear of vehicle.

Scheme 53

34 21 812 Overhauling Left Or Right Rear Brake Caliper (Brake Caliper Removed)

Special tools required

1. 34 1 132

Note. Use original BMW repair kit.

Take off plastic caps (1).

Unscrew guide screws (2).

Installation

Only clean guide screws; do not grease. Check guide bolts, replace if necessary.

Tightening torque: 34 21 5AZ . See 34 21 REAR BRAKE

Dismantle brake caliper and remove brake linings.

Installation

Press brake lining fully outwards and insert spring (4).

Carefully force piston out through connection bore with compressed air.

To protect piston, place a protective plate (e.g. hard wood or hard felt) in caliper recess.

Do not grip piston with fingers - risk of trapping!

Check guide sleeves (5), fitting repair-kit guide sleeve if necessary.

Remove sealing ring carefully with a plastic needle.

Clean cylinder bores and parts with alcohol and dry with compressed air.

Thoroughly inspect cylinder bore, piston and flange surfaces.

Machining of cylinders and pistons is not permitted.

Installation

Apply a light coat of Ate brake cylinder paste to cylinder bore, piston and sealing sleeve

Refer to BRAKES - OPERATING FLUIDS .

Install sealing cover in rear annular groove of cylinder bore.

Press in piston with a hardwood board.

Press on dust protection sleeve evenly up to stop with special tool 34 1 132 .

Installation

The area between dust protection sleeve and brake caliper housing must be kept dry so as to ensure correct seating for the dust protection sleeve.

Keep Ate brake cylinder paste or brake fluid away from this area.

Make sure dust protection sleeve is correctly seated on piston.

Scheme 54

Scheme 55

34 31 181 Removing and Installing/Replacing Expansion Tank For Hydraulic Brake Actuation

Necessary preliminary tasks

1. Remove lower section of microfilter housing . See «64 31 061 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER HOUSING LOWER SECTION»(/bmw/m6/e63e64-2005-2010/remont/automatic-hvac-system/#heating-and-air-conditioning-repair__64-31-061-removing-and-installingreplacing)
2. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information)

Suck the brake fluid out of the expansion tank. Use suction bottle exclusively to draw off brake fluid.

Scheme 56

Unfasten plug connection (1) and disconnect.

Release retaining screw (2).

Installation

Tightening torque 34 31 3AZ . See 34 31 BRAKE MASTER CYLINDER

Pull expansion tank vertically out of brake master cylinder.

Scheme 57

Installation

Check rubber plug in brake master cylinder for damage and replace if necessary.

Push the expansion tank vertically onto the master brake cylinder.

Scheme 58

34 31 505 Removing and Installing/Replacing Master Brake Cylinder for DSC

Special tools required

1. 32 1 270

Necessary preliminary tasks

1. Remove expansion tank . See «34 31 181 REMOVING AND INSTALLING/REPLACING EXPANSION TANK FOR HYDRAULIC BRAKE ACTUATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-31-181-removing-and-installingreplacing)
2. Remove footwell trim . See «51 45 185 REMOVING AND INSTALLING/REPLACING PANEL FOR PEDALS»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-45-185-removing-and-installingreplacing)
3. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information) )

After completing tasks, bleed brake system with DSC . See 34 00 050 BLEEDING BRAKE SYSTEM WITH DSC

Remove locking clip (1) and disengage and pull out locking pin.

Slacken nuts (2).

Installation

Replace self-locking nuts.

Tightening torque 35 11 1AZ . See 35 11 PEDAL ASSEMBLY CONSOLE

Scheme 59

Unfasten brake lines (1).

Detach brake lines at junction (2) and remove short sections.

Seal off brake lines and brake master cylinder with plugs 32 1 270 . See 32 1 270 PLUGS (SET)

Installation

Fit lines at both connection points and then tighten down.

Tightening torque 34 32 1AZ . See 34 32 BRAKE LINES

Release nuts (3) and feed brake master cylinder out of brake booster.

Scheme 60

Installation

Replace self-locking nuts.

Tightening torque 34 31 1AZ . See 34 31 BRAKE MASTER CYLINDER

Installation

Replace sealing ring.

Scheme 61

Installation

When inserting the brake master cylinder (2) into the brake booster (1), make sure the pressure rod of the brake booster and that of the brake master cylinder meet each other on one level.

Scheme 62

Scheme 63

34 32 861 Replacing All Brake Pipes

Special tools required

1. 34 5 100

Note. The brake lines are only supplied in the straight version and correct length with connecting nipple. Read and comply with General Information . See 34 00 ... GENERAL INFORMATION After completing work, bleed brake system . See 34 00 050 BLEEDING BRAKE SYSTEM WITH DSC Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

New brake lines are bent into shape with bending tool 34 5 100 . See 34 5 100 BENDING FIXTURE

Removed brake pipes can be used as templates for bending.

Scheme 64

Installation

Tightening torque 34 32 1AZ . See 34 32 BRAKE LINES

34 32 881 Replacing Front Left Or Right Brake Hoses

Note. After completing tasks, bleed brake system . See 34 00 025 REPLACING FLUID IN ABS/ASC+T BRAKE SYSTEM

Apply pedal prop and depress brake pedal slightly. This prevents brake fluid from emerging from the expansion tank when the brake lines are opened.

Pull brake hose out of holder (1).

Detach brake hose from brake line (2).

Installation

Tightening torque 34 32 1AZ . See 34 32 BRAKE LINES

Detach brake hose from brake caliper (4).

Tightening torque 34 32 4AZ . See 34 32 BRAKE LINES

Scheme 65

Installation

First tighten brake hose on brake caliper.

Move wheels into straight-ahead position.

Insert brake hose in bracket and screw onto brake pipe.

34 32 980 Replacing Rear Left Or Right Brake Hoses

Note. Read and comply with General Information . See 34 00 ... GENERAL INFORMATION Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM After completing tasks, bleed brake system . See 34 00 025 REPLACING FLUID IN ABS/ASC+T BRAKE SYSTEM

Apply pedal prop and depress brake pedal slightly. This prevents brake fluid from emerging from the expansion tank and air from entering the system when the brake lines are opened.

Disconnect brake hose from brake line (1).

Installation

Tightening torque 34 32 1AZ . See 34 32 BRAKE LINES

Detach brake hose from brake caliper (3).

Installation

Tightening torque 34 32 5AZ . See 34 32 BRAKE LINES

Scheme 66

34 33 071 Replacing vacuum hose for brake booster (S85)

Necessary preliminary tasks

1. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information)
2. Remove lower section of microfilter housing. «64 31 061 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER HOUSING LOWER SECTION»(/bmw/m6/e63e64-2005-2010/remont/automatic-hvac-system/#heating-and-air-conditioning-repair__64-31-061-removing-and-installingreplacing)

Disconnect plug connection (1). Unscrew nuts (2). Unlock quick-release fastener (3) and detach vacuum hose.

Scheme 67

Release clamp (1) and detach vacuum line.

Installation: Replace clamp (1).

Detach non-return valve (2) from brake booster and remove vacuum line (3).

Scheme 68

Installation: Check sealing ring in brake booster and replace if necessary.

When replacing vacuum line: Release screws (1) and convert differential pressure switch (2).

Scheme 69

Important! Replace O-ring on differential pressure switch.

34 33 075 Removing and installing/replacing vacuum pump (S85)

Necessary preliminary tasks

1. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information)
2. Remove lower section of microfilter housing. «64 31 061 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER HOUSING LOWER SECTION»(/bmw/m6/e63e64-2005-2010/remont/automatic-hvac-system/#heating-and-air-conditioning-repair__64-31-061-removing-and-installingreplacing)

Disconnect plug connection (1). Unlock quick-release fastener (2) and detach vacuum hose. Release nuts (3) and remove vacuum pump.

Scheme 70

34 33 505 Removing and Installing/Replacing Brake Booster

Necessary preliminary tasks

1. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information)
2. Remove brake master cylinder . See «34 31 505 REMOVING AND INSTALLING/REPLACING MASTER BRAKE CYLINDER FOR DSC»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-31-505-removing-and-installingreplacing)

For cars with S85 engines

1. Remove vacuum pump
2. Remove bracket for vacuum pump
3. Remove vacuum line

Detach locking clip (1) from brake pedal, disengage and pull out locking pin.

Unscrew nuts (2).

Installation

Replace self-locking nuts.

Tightening torque 35 11 1AZ . See 35 11 PEDAL ASSEMBLY CONSOLE

Remove non-return valve (1) from brake booster.

Carefully pull brake booster (2) out of bulkhead and tilt out.

Installation

Replace seal between brake booster and bulkhead.

Scheme 71

34 35 001 Replacing a Brake Lining Sensor

Necessary preliminary tasks

1. Remove wheel . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000)

Open cover (1) on plug housing (3).

Unclip lead of brake lining sensor (2) from plug housing (3).

Disconnect associated plug connection of lead from brake lining sensor (2).

Feed lead from brake lining sensor (2) out of fixtures.

Scheme 72

Press clip (1) together and detach brake lining sensor (2) in direction of arrow from brake caliper (3).

Installation

Make sure clip (1) and brake lining sensor (2) are correctly seated in brake caliper (3).

Scheme 73

Special tools required

1. 32 1 030

Perform inspection in the following manner

When 1st ratchet is engaged, no braking force should be exerted.

The difference in wheel circumferential forces between the left and right wheels may deviate by max. 30% from the greater value (measured on brake analyzer). In event of larger deviations of wheel circumferential force: carry out readjustment.

It must be possible to brake with locked wheels with the handbrake.

The handbrake must be readjusted whenever the actuation stroke is greater than 10 teeth.

Note. The handbrake can only be adjusted correctly when the parking brake Bowden cables and all moving handbrake parts are free to move and fully operational. Basic handbrake adjustment is necessary: When replacing parking brake shoes. When replacing brake disks. In event of excessive actuation stroke (10 teeth). When replacing parking brake Bowden cables

Scheme 74

Scheme 75

Scheme 76

Scheme 77

1. Setting instruction for brake shoes (basic setting) Lock adjuster unit (ASZE). Using special tool 32 1 030 , press stop (1) of adjusting spring back to such an extent that retaining hook (2) engages in stop (1). See «32 1 030 LEVER»(/bmw/m6/e63e64-2005-2010/remont/manual-power-steering/#steering-and-wheel-alignment-special-tools__32-1-030-lever) Completely unscrew one wheel stud on each rear wheel. Installation: Tightening torque 36 10 1AZ . See «36 10 WHEELS»(/bmw/m6/e63e64-2005-2010/remont/wheel-tire-system/#wheel-and-tires-tightening-torques__36-10-wheels) Turn wheel until adjustment screw is visible in tapped hole. Turn adjusting screw with a screwdriver until the wheel is no longer able to turn. Then unfasten the adjusting screw 8 notches. Unlock adjuster unit (ASZE). Lever restraint hook (2) outwards with a suitable screwdriver (1). Restraint hook (2) must disengage from stop of adjusting spring.
2. Setting instruction for parking brake Bowden cables The handbrake lever must be applied 5 times to approx. 400N actuating force. 2.1 On brake analyzer 0th tooth (handbrake released): Vehicles with manual transmission: Shift lever in neutral position. Vehicles with automatic transmission: Selector lever in "N" position. Without locking differential < or = 150 N. With locking differential < or = 200 N (possibly odd display). 1st tooth: No increase in braking force with regard to 0th tooth. Indicator lamp can be lit. 2nd tooth: Indicator lamp must be lit. 3rd tooth: Increase in braking force. 5th tooth: The brake force display must have reached > or = 400 N. Checking brake force differential at wheel: Apply handbrake until a wheel circumferential force (brake force display) of min. 1000 N is reached. Max. permitted brake force differential right/left < or = 35% (referred to greater brake value).
3. Braking in the duo-servo parking brake The following braking-in procedures are applicable in case of insufficient braking effect or after replacing brake disks and/or brake shoes. 3.1 On brake analyzer Apply handbrake lever until wheel circumferential force on first wheel is 800 N. Lock lever in next lower tooth. Release handbrake lever after approx. 2 minutes. 3.2 When driving on road (If possible inside the company grounds or on an unused road) At approx. 40 km/h, apply handbrake lever until braking action can be felt. Pull up handbrake lever into next notch and drive on for approx. 400 m. A basic requirement is that handbrake is adjusted uniformly. NOTE: If necessary, repeat braking-in procedure. IMPORTANT: Allow brake to cool down sufficiently.

Scheme 78

34 41 000 Removing and Installing/Replacing Handbrake Lever

Special tools required

1. 32 1 030

Necessary preliminary tasks

1. Remove center console . See «51 16 200 REMOVING AND INSTALLING STORAGE COMPARTMENT»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-16-200-removing-and-installing)

After completing tasks, adjust handbrake . See 34 10 014 ADJUSTING HANDBRAKE

Lock adjuster unit (ASZE).

Using special tool 32 1 030 , press stop (2) of adjusting spring back to such an extent that retaining hook (3) engages in stop (2). See 32 1 030 LEVER

Unclip mounting clip (1) upwards out of balance arm (2).

Scheme 79

Guide handbrake Bowden cables (1) with a screwdriver inwards and pull out of balance bar (2).

Scheme 80

Disconnect cable (1) from handbrake check switch.

Release screws (2) and remove handbrake lever (3).

Installation

Tightening torque 34 41 1AZ . See 34 41 PARKING BRAKE

Handbrake lever and adjustment unit (ASZE) are only exchanged completely as a single unit.

Scheme 81

34 41 120 Removing and Installing/Replacing Both Handbrake Bowden Cables

Special tools required

1. 32 1 030

Necessary preliminary tasks

1. Remove center console . See «51 16 200 REMOVING AND INSTALLING STORAGE COMPARTMENT»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-16-200-removing-and-installing)
2. Remove rear brake disks . See «34 21 320 REMOVING AND INSTALLING OR REPLACING BOTH REAR BRAKE DISCS»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-21-320-removing-and-installing)
3. Remove exhaust system.
4. Remove heat shield.

After completing tasks, adjust handbrake . See 34 10 014 ADJUSTING HANDBRAKE

Lock adjuster unit (ASZE).

Using special tool 32 1 030 , press stop (1) of adjusting spring back to such an extent that retaining hook (2) engages in stop (1). See 32 1 030 LEVER

Unclip mounting clip (1) upwards out of balance arm (2).

Guide handbrake Bowden cables (1) with a screwdriver inwards and pull out of balance bar (2).

Disconnect handbrake Bowden cables at expander locks.

Release screw (1) and remove bracket.

Installation

Tightening torque 34 41 5AZ . See 34 41 PARKING BRAKE

Pull handbrake Bowden cables (2) out of wheel carrier.

Scheme 82

Disconnect handbrake Bowden cables (1) out of mountings.

Pull handbrake Bowden cables (1) out of guide (2) and remove.

Scheme 83

34 41 220 Removing and Installing/Replacing All Handbrake Shoes

Special tools required

1. 32 1 030
2. 34 4 000

Necessary preliminary tasks

1. Remove rear brake disk . See «34 21 320 REMOVING AND INSTALLING OR REPLACING BOTH REAR BRAKE DISCS»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-21-320-removing-and-installing) )

After completing work

1. Adjusting handbrake . See «34 10 014 ADJUSTING HANDBRAKE»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair)

Release handbrake lever.

Lock adjuster unit (ASZE).

Using special tool 32 1 030, press stop (1) of adjusting spring back to such an extent that retaining hook (2) engages in stop (1). See 32 1 030 LEVER

Disconnect return spring (1) with brake spring pliers.

Installation

Check and if necessary replace return spring (1).

Pay attention to installation position of adjustment screw (2).

Apply a thin coat of grease to bush and screw threads.

Scheme 84

Disconnect return spring (1) with brake spring pliers.

Installation

Check and if necessary replace return spring (1).

Scheme 85

Turn clamping pins (1) with special tool 34 4 000 through 90° and disconnect. See 34 4 000 ALLEN KEY

Remove brake shoes (2).

Scheme 86

34 41 250 Removing and Installing/Replacing Expander Lock For Handbrake Shoes

Special tools required

1. 32 1 030

Necessary preliminary tasks

1. Remove handbrake shoes . See «34 41 220 REMOVING AND INSTALLING/REPLACING ALL HANDBRAKE SHOES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-41-220-removing-and-installingreplacing)

After completing work

1. Adjust handbrake . See «34 10 014 ADJUSTING HANDBRAKE»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair)

Lock adjuster unit (ASZE).

Using special tool 32 1 030 , press stop (1) of adjusting spring back to such an extent that retaining hook (2) engages in stop (1). See 32 1 030 LEVER

Pull expander lock (1) forwards, disconnect handbrake Bowden cable (2) and remove expander lock.

Scheme 87

34 51 527 Removing and installing/replacing hydraulic unit for DSC (S85)

Necessary preliminary tasks

1. Read and comply with «General Information»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information) .
2. Remove front left wheel arch trim. See «51 71 040 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT WHEEL ARCH COVER»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-71-040-removing-and-installingreplacing) .
3. Remove front left support.

After completing work: Bleed braking system .

Installation: After reinstalling the hydraulic unit, carry out the following tasks with the DIS (Diagnosis and Information System)

1. Mix-up check of brake lines
2. Function check, hydraulic unit

Press clutch pedal down to floor and secure with pedal support.

Note. The pedal support may only be released when the brake lines are reconnected.

This prevents brake fluid from emerging from the expansion tank and air from entering the system when the brake lines are opened.

Disconnect plug connection (1).

Scheme 88

Unfasten brake lines (2). Installation: Tightening torque, see 34 32 1AZ in 34 32 BRAKE LINES . Release bolts (3) and remove hydraulic unit.

When replacing hydraulic unit

Scheme 89

1. Release bolts (1) and modify bracket (2).
2. Modify control unit.

Scheme 90

34 52 516 Removing and Installing/Replacing DSC Control Unit

Necessary preliminary tasks

1. Before removal, read out the control unit fault memory and if necessary print out the diagnostic trouble code.

Installation

When replacing the control unit, carry out the following tasks with the DIS (Diagnosis and Information System)

1. Vehicle coding (performed by the vehicle itself)
2. Adjustment of steering angle sensor (performed by the vehicle itself)
3. Adjustment of brake pressure sensor (performed by the vehicle itself)
4. Adjustment of lateral acceleration sensors (performed by the vehicle itself)
5. Function check, hydraulic unit

Unfasten plug connection (1).

Release screws (2) and carefully detach control unit (3) towards front.

Scheme 91

Installation

Keep sealing faces clean.

Replace screws.

Observe tightening sequence (1-4).

Tightening torque 34 51 1AZ . See 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC)

Scheme 92

34 52 516 Removing and installing/replacing DSC control unit (S85)

Necessary preliminary tasks

1. Remove «hydraulic unit»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-51-527-removing-and-installingreplacing) .

When replacing control unit

1. Carry out programming/coding.
2. Adjustment of steering angle sensor.
3. Mix-up check of brake lines.
4. Function check, hydraulic unit.

Release screws (1) and carefully detach control unit (2) towards front.

Scheme 93

Installation: Keep sealing faces clean. Replace screws. Observe tightening sequence (1-4). Tightening torque, see 34 51 1AZ in 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC)

Scheme 94

34 52 525 Replacing One Front Pulse Generator

Note. Read and comply with General Information . See 34 00 ... GENERAL INFORMATION Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

Open plug housing (1), pull plug connection (2) out of bracket and disconnect.

Pull cable with rubber grommet out of bracket on spring strut.

Installation

Ensure proper locking of plug connector and proper seating of rubber grommets.

Scheme 95

Release hexagon socket head cap screw (1) and pull wheel speed sensor out of bore.

Installation

Tightening torque 31 51 6AZ .

Clean bore hole for pulse generator and grease with Staburags NBU 12/K lubricating grease (refer to BRAKES - OPERATING FLUIDS ).

Scheme 96

34 52 535 Replacing a Rear Pulse Generator

Necessary preliminary tasks

1. Remove rear wheel . See «36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL»(ref-263484-S24107901842007090700000)
2. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information)

Observe safety instructions on raising the vehicle . See 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM

Open plug housing (1).

Pull plug connection (2) out of mounting and disconnect.

Pull cable out of brackets on swinging arm.

Installation

Ensure proper locking of the plug connector and proper seating of the cable in the brackets.

Scheme 97

Release hexagon socket head cap screw (1) and pull wheel speed sensor out of bore.

Installation

Tightening torque 34 51 6AZ . See 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC)

Clean bore hole for pulse generator and grease with Staburags NBU 12/K lubricating grease (refer to BRAKES - OPERATING FLUIDS ).

Scheme 98

34 52 550 Removing and Installing/Replacing DSC Sensor

Necessary preliminary tasks

1. Remove right front seat . See «52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC)»(/bmw/m6/e63e64-2005-2010/remont/seats/#seats-repair__52-14-000-removing-and-installing)
2. Remove front inside entrance cover strip . See «51 47 000 REMOVING AND INSTALLING/REPLACING FRONT (INSIDE) LEFT OR RIGHT ENTRANCE COVER STRIP»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-47-000-removing-and-installingreplacing)
3. Lift carpet and fold back to one side

Note. The yaw sensor comprises the function of the transversal-acceleration sensor and the yaw sensor.

Unlock plug connection.

Installation

Make sure plug connection locks correctly.

Release screws (1) and remove rotation rate sensor.

Installation

Tightening torque 34 51 3AZ . See 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC)

Scheme 99

34 52 550 Removing and installing/replacing DSC sensor (S85)

Necessary preliminary tasks

1. Remove right front seat. See «52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC)»(/bmw/m6/e63e64-2005-2010/remont/seats/#seats-repair__52-14-000-removing-and-installing) .
2. Remove front inner entrance cover strip. See «51 47 000 REMOVING AND INSTALLING/REPLACING FRONT (INSIDE) LEFT OR RIGHT ENTRANCE COVER STRIP»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-47-000-removing-and-installingreplacing) .

Lift carpet (1) and fold to side. Release screws (2) and swing out DSC sensor (3). Installation: Tightening torque, see 34 51 3AZ in 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC) .

Scheme 100

Unlock plug connection (1) and remove DSC sensor (2). Installation: Make sure plug connection locks correctly.

Scheme 101

34 52 575 Removing and Installing/Replacing Front Pressure Sensor For ACC

Necessary preliminary tasks

1. Remove front right wheel arch trim . See «51 71 040 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT WHEEL ARCH COVER»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-71-040-removing-and-installingreplacing)
2. Read and comply with General Information . See «34 00 ... GENERAL INFORMATION»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-00-general-information)

After completing tasks, bleed brake system . See 34 00 025 REPLACING FLUID IN ABS/ASC+T BRAKE SYSTEM

Apply pedal prop and depress brake pedal slightly. This prevents brake fluid from emerging from the expansion tank and air from entering the brake system after the brake lines have been detached.

Unfasten plug connection (1).

Release pressure sensor (2) and remove.

Installation

Tightening torque 34 51 12AZ . See 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC)

Scheme 102

34 52 580 Removing and Installing/Replacing Rear Pressure Sensor For ACC

Note. Read and comply with General Information . See 34 00 ... GENERAL INFORMATION

Apply completing takes, bleed brake system. . See 34 00 025 REPLACING FLUID IN ABS/ASC+T BRAKE SYSTEM

Apply pedal prop and depress brake pedal slightly. This prevents brake fluid from emerging from the expansion tank and air from entering the brake system after the brake lines have been detached.

Vehicles with N52 engine

If necessary, remove heat shield (1).

Installation

Make sure heat shield is correctly seated.

If necessary, replace heat shield.

Scheme 103

Disconnect plug connection (1).

Release pressure sensor (2) and remove.

Installation

Tightening torque 34 51 12AZ . See 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC)

Scheme 104

See also:
• BRAKES - OPERATING FLUIDS
• BRAKES - TECHNICAL DATA
• 34 32 BRAKE LINES
• 34 1 260 BRAKE LINING MEASURING GAUGE
• 34 11 FRONT BRAKE E63
• 34 21 REAR BRAKE DISCS E63
• 64 31 061 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT MICROFILTER HOUSING LOWER SECTION
• 34 3 100 BRAKE BOOSTER TESTER
• 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM
• 34 1 080 BIT INSERT
• 34 11 FRONT BRAKE
• 34 6 320 LEVER
• 34 1 280 SLIDING CALIPER
• 33 41 151 REPLACING LEFT OR RIGHT WHEEL BEARING ON REAR AXLE SHAFT
• 34 21 REAR BRAKE
• 34 1 050 FIXTURE
• 34 31 BRAKE MASTER CYLINDER
• 51 45 185 REMOVING AND INSTALLING/REPLACING PANEL FOR PEDALS
• 35 11 PEDAL ASSEMBLY CONSOLE
• 32 1 270 PLUGS (SET)
• 34 5 100 BENDING FIXTURE
• 35 11 PEDAL ASSEMBLY CONSOLE
• 32 1 030 LEVER
• 36 10 WHEELS
• 51 16 200 REMOVING AND INSTALLING STORAGE COMPARTMENT
• 34 41 PARKING BRAKE
• 34 4 000 ALLEN KEY
• 51 71 040 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT WHEEL ARCH COVER
• 61 35 ... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE)
• 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC)
• 34 51 SLIP CONTROL SYSTEM (ABS, ASC+T, DSC)
• 52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC)
• 51 47 000 REMOVING AND INSTALLING/REPLACING FRONT (INSIDE) LEFT OR RIGHT ENTRANCE COVER STRIP
• 34 10 014 Adjusting Handbrake
• 34 00 ... GENERAL INFORMATION
• 34 00 050 BLEEDING BRAKE SYSTEM WITH DSC
• 34 00 ... GENERAL INFORMATION ON BRAKING IN NEW BRAKE DISCS/BRAKE PADS
• 34 35 001 REPLACING A BRAKE LINING SENSOR
• 34 11 000 REMOVING AND INSTALLING/REPLACING BRAKE LININGS ON BOTH FRONT DISC BRAKES
• 34 11 220 REMOVING AND INSTALLING/REPLACING BOTH FRONT BRAKE DISCS
• 34 00 025 REPLACING FLUID IN ABS/ASC+T BRAKE SYSTEM
• 34 41 250 REMOVING AND INSTALLING/REPLACING EXPANDER LOCK FOR HANDBRAKE SHOES
• 34 21 200 REMOVING AND INSTALLING OR REPLACING BRAKE LININGS ON BOTH REAR DISC BRAKES
• 34 31 181 REMOVING AND INSTALLING/REPLACING EXPANSION TANK FOR HYDRAULIC BRAKE ACTUATION
• 34 31 505 REMOVING AND INSTALLING/REPLACING MASTER BRAKE CYLINDER FOR DSC
• 34 21 320 REMOVING AND INSTALLING OR REPLACING BOTH REAR BRAKE DISCS
• 34 41 220 REMOVING AND INSTALLING/REPLACING ALL HANDBRAKE SHOES
• hydraulic unit