Contents Wiring diagrams Section: Mechanical - Hydraulic All sections

Conventional Brake Components Acura MDX II

Mechanical - Hydraulic 78 illustrations ~7615 words

Scheme 1

Scheme 1: Special Tools

Scheme 2

Scheme 2: Component Location Index

Brake System Inspection and Test

Inspect the brake system components listed. Repair or replace any parts that are leaking or damaged.

Component Inspections

ComponentProcedureAlso check for
Master CylinderLook for damage or signs of fluid leakage at: Reservoir or reservoir grommets. Line joints. Between master cylinder and booster.Bulging seal at reservoir cap. This is a sign of fluid contamination.
Brake HosesLook for damage or signs of fluid leakage at: Line joints and banjo bolt connections. Hoses and lines, also inspect for twisting or damage.Bulging, twisted, or bent lines.
CaliperLook for damage or signs of fluid leakage at: Piston seal. Banjo bolt connections. Bleed screw.Seized or sticking caliper pins.
VSA Modulator-control UnitLook for damage or signs of fluid leakage at: Line joints. Modulator-control unit.

COMPONENT INSPECTIONS

Brake pedal sinks/fades when braking

  1. Set the parking brake, and start the engine, then turn off the A/C. Allow the engine to warm up to normal operating temperature (radiator fan comes on twice).
  2. Attach a 50 mm (2 in.) piece of masking tape along the bottom of the steering wheel, and draw a horizontal reference mark across it.
  3. With the transmission in the P or N, press and hold the brake pedal lightly (about the same pressure needed to keep an A/T-equipped vehicle from creeping), then release the parking brake.
  4. While still holding the brake pedal, hook the end of the tape measure behind the brake pedal, then pull the tape up to the steering wheel. Note the measurement between the brake pedal and the reference mark on the steering wheel.
  5. Apply steady pressure to the brake pedal for 3 minutes.
  6. Watch the tape measure. If the measurement increases 10 mm (3/8 in.) or less, the master cylinder is OK. If the measurement increases more than 10 mm (3/8 in.), replace the master cylinder.

Rapid brake pad wear, vehicle vibration (after a long drive), or high, hard brake pedal

Note. Make sure that the caliper pins are installed correctly.

The upper caliper pin B and lower caliper pin A are different. If the pins are installed in the wrong location, it will cause vibration, uneven or rapid brake pad wear, and possibly uneven tire wear. For proper caliper pin location (see FRONT BRAKE CALIPER OVERHAUL ).

  1. Drive the vehicle until the brakes drag or until the pedal is high and hard. This can take 20 or more brake pedal applications during an extended test-drive.
  2. With the engine running, raise the vehicle on a lift, and spin all four wheels by hand. Is there brake drag at any of the wheels? YES - Go to step 3. NO - Look for other causes of pad wear, high pedal, or vehicle vibration.
  3. Turn the ignition switch to LOCK (0), press the brake pedal several times to deplete the vacuum in the brake booster, and then spin the wheels again to check for brake drag. Is there brake drag at any of the wheels? YES - Go to step 4. NO - Replace the brake booster (see «BRAKE BOOSTER REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  4. Without removing the brake lines, unbolt and separate the master cylinder from the booster, then spin the wheels to check for brake drag. Is there brake drag at any of the wheels? YES - Go to step 5. NO - Check the brake pedal position switch adjustment and pedal free play (see «BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  5. Loosen the hydraulic lines at the master cylinder, then spin the wheels to check for brake drag. Is there brake drag at any of the wheels? YES - Go to step 6. NO - Check the master cylinder reservoir for contamination in the brake fluid. If you find contamination, flush the entire brake system of all contaminated fluid. If the brake fluid is OK, replace the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__master-cylinder-replacement) ).
  6. Loosen the bleed screws at each caliper, then spin the wheels to check for brake drag. Is there brake drag at any of the wheels? YES - Check the master cylinder reservoir for contamination in the brake fluid. If you find contamination, flush the entire brake system of all contaminated fluid. If the brake fluid is OK, disassemble and repair the caliper on the wheel(s) with brake drag. NO - Look for and replace any damaged brake lines. If all brake lines are OK, replace the VSA modulator-control unit (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(/acura/mdx/ii-2006-2010/remont/anti-locktraction-control/#vsa-vehicle-stability-assist-system__vsa-modulator-control-unit-removal-and-installation) ).

Scheme 3

Scheme 3: Pedal Height

Scheme 4

Scheme 4

Scheme 5

Scheme 5
  1. Turn the brake pedal position switch (A) counterclockwise, and pull it back until it is no longer touching the brake pedal.
  2. Pull back the carpet and find the cutout (B) in the insulation. Measure the pedal height (C) at the center of the pedal pad (D) to the floor without the insulation. Standard pedal height (with carpet removed): 178 mm (7 in.)
  3. Loosen the pushrod locknut (A), and screw the pushrod (8) in or out with pliers until the standard pedal height from the floor is reached. After adjustment, tighten the locknut firmly. Do not adjust the pedal height with the pushrod pressed. Brake Pedal Position Switch Clearance
  4. Lift up on the brake pedal by hand. Push in the brake pedal position switch until its plunger is fully pressed (threaded end (A) touching the pad (B) on the pedal arm). Turn the switch 45° clockwise to lock it. The gap between the brake pedal position switch and the pad is automatically adjusted to 0.7 mm (0.028 in.) by locking the switch. Make sure the brake lights go off when the pedal is released.
  5. Check the brake pedal free play.

Scheme 6

Scheme 6: Pedal Free Play
  1. With the ignition switch LOCK (0), inspect the play (A) at the brake pedal pad (B) by pushing the brake pedal by hand. If the brake pedal free play is out of specification, adjust the brake pedal position switch (C). If the brake pedal free play is insufficient, it may result in brake drag. Free play: 1-5 mm (1/16-3/16 in.)

Scheme 7

Scheme 7: Inspection
  1. Press the parking brake pedal (A) with 294 N (30 kgf, 66 lbf) of force to fully apply the parking brake. The parking brake pedal should be locked within the specified number of clicks. Pedal locked clicks: 9 to 11
  2. Adjust the parking brake if the pedal clicks are not within the specification. NOTE: Minor parking brake pedal adjustments (1 to 2 clicks) can be made with the adjusting nut (see parking brake minor adjustment). If a larger adjustment is required, follow the major adjustment procedure using the adjuster nut at the parking brake drum (see parking brake major adjustment). After installing new parking brake shoes and/or new brake disc/drum, make sure you drive the vehicle for "break-in" (see «PARKING BRAKE SHOE LINING BREAK-IN»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__parking-brake-shoe-lining-break-in) ).

Scheme 8

Scheme 8: Minor Adjustment
  1. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Fully release the parking brake pedal.
  3. Press the parking brake pedal 1 click.
  4. Tighten the parking brake adjusting nut (A) until the parking brakes drag slightly when the rear wheels are turned.
  5. Release the parking brake pedal fully, and check that the parking brakes do not drag when the rear wheels are turned. Readjust if necessary.
  6. Make sure the parking brakes are fully applied when the parking brake pedal is pressed all the way.

Scheme 9

Scheme 9: Major Adjustment (to be done when replacing parking brake shoes and after lining surface break-in)

Scheme 10

Scheme 10
  1. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Fully release the parking brake pedal.
  3. Back off the parking brake adjusting nut (A) in the parking brake pedal.
  4. Remove the rear wheels.
  5. Remove the access plug (A).
  6. Turn the ratchet teeth on the adjuster nut (B) with a flat-tip screwdriver (C) until the shoes lock against the parking brake drum. Then back off the adjuster 10 clicks, and install the access plug.
  7. Clean the mating surfaces of the brake disc/drum and the inside of the wheel, then install the rear wheels.
  8. Do the minor adjustment procedure.

Brake System Bleeding

Note. Do not reuse the drained fluid. Use only clean Acura DOT 3 Brake Fluid from an unopened container. Using a non-Acura brake fluid can cause corrosion and shorten the life of the system. Do not mix different brands of brake fluid; they may not be compatible. Make sure no dirt or other foreign matter is allowed to contaminate the brake fluid. Do not spill brake fluid on the vehicle, it may damage the paint; if brake fluid does contact the paint, wash it off immediately with water. The reservoir connected to the master cylinder must be at the MAX (upper) level mark at the start of the bleeding procedure and checked after bleeding each wheel. Add fluid as required.

Scheme 11

Scheme 11: Brake System Bleeding

Scheme 12

Scheme 12

Scheme 13

Scheme 13

Scheme 14

Scheme 14
  1. Make sure the brake fluid level in the reservoir (A) is at the MAX (upper) level line (B).
  2. Have someone slowly pump the brake pedal several times, then apply steady pressure.
  3. Start the bleeding at the driver's side of the front brake system. NOTE: Bleed the calipers or the wheel cylinders in the sequence shown.
  4. Attach a length of clear drain tube (A) to the bleed screw (B), then, loosen the bleed screw to allow air to escape from the system. Then tighten the bleed screw securely. Front Rear
  5. Refill the master cylinder reservoir to the MAX (upper) level line.
  6. Repeat the procedure for each brake circuit until there are no air bubbles are in the fluid.

Scheme 15

Scheme 15: Brake System Indicator Circuit Diagram

Parking Brake Switch Test

Note. If both the ABS/VSA indicator, the brake system indicator, and the trailer stability assist warning come on at the same time, check the VSA system first (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 16

Scheme 16: Parking Brake Switch Test
  1. Disconnect the parking brake switch connector (A) from the parking brake switch (B).
  2. Check for continuity between the positive terminal (C) and body ground. With the parking brake pedal pressed, there should be continuity. With the parking brake pedal released, there should be no continuity. NOTE: If the parking brake switch and the fluid level switch are OK, but the brake system indicator does not function, do the gauge control module test (see «SELF-DIAGNOSTIC FUNCTION»(/acura/mdx/ii-2006-2010/remont/gauges-instrument-panels/#gauges__self-diagnostic-function) ).
  3. Connect the parking brake switch connector to the parking brake switch.

Brake Fluid Level Switch Test

Check for continuity between the terminals (1) and (2) with the float in the down position and in the up position.

Note. Remove the brake fluid completely from the reservoir. With the float down, there should be continuity. Fill the reservoir with brake fluid to the MAX (upper) level (A). With the float up, there should be no continuity. If both the ABS/VSA indicator, the brake system indicator, and the trailer stability assist warning come on at the same time, check the VSA system first (see GENERAL TROUBLESHOOTING INFORMATION ). If the parking brake switch and fluid level switch are OK, but the brake system indicator does not function, do the gauge control module test (see SELF-DIAGNOSTIC FUNCTION ).

Front Brake Pad Inspection and Replacement

Special Tools Required

Brake caliper piston compressor 07AAE-SEPA101

CAUTIONFrequent inhalation of brake pad dust, regardless of material composition, could be hazardous to your health. Avoid breathing dust particles. Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.

Scheme 17

Scheme 17: Inspection

Scheme 18

Scheme 18
  1. Raise the front of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the front wheels.
  3. Check the thickness (A) of the inner pad (B) and outer pad (C). Do not include the thickness of the backing plate. Brake pad thickness: Standard: 10.6-11.2 mm (0.42-0.44 in.) Service limit: 1.6 mm (0.06 in.) Inner pad Outer pad
  4. If the brake pad thickness is less than the service limit, replace the front brake pads as a set.
  5. Clean the mating surfaces of the brake disc and the inside of the wheel, then install the front wheels.

Scheme 19

Scheme 19: Replacement

Scheme 20

Scheme 20

Scheme 21

Scheme 21

Scheme 22

Scheme 22

Scheme 23

Scheme 23

Scheme 24

Scheme 24
  1. Remove some brake fluid from the master cylinder.
  2. Raise the front of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  3. Remove the front wheels.
  4. Remove the flange bolt (A), and pivot the caliper (B) up out of the way. Check the hose and pin boots for damage and deterioration.
  5. Remove the pad shims (A) and brake pads (B).
  6. Remove the pad retainers (A). NOTE: The upper and lower pad retainers are different. During installation, make sure the pad retainers are in proper positions.
  7. Clean the caliper bracket (B) thoroughly; remove any rust, and check for grooves and cracks. Verify that the caliper pins (C) move in and out smoothly. Clean and lube if needed.
  8. Inspect the brake disc, and check for damage and cracks (see «FRONT BRAKE DISC INSPECTION»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  9. Install the pad retainers. Wipe excess assembly paste off the retainers. Keep the assembly paste off the discs and pads.
  10. Mount the brake caliper piston compressor tool (A) on the caliper body (B).
  11. Press in the piston with the brake caliper piston compressor tool so the caliper will fit over the brake pads. Make sure the piston boot is in position to prevent damaging it when pivoting the caliper down. NOTE: Be careful when pressing in the piston; brake fluid might overflow from the master cylinder's reservoir. If brake fluid gets on any painted surface, wash it off immediately with water.
  12. Remove the brake caliper piston compressor tool.
  13. Apply a thin coat of M-77 assembly paste (P/N 08798-9010) to the pad side of the shims (A), the back of the brake pads (B) and the other areas indicated by the arrows. Wipe excess assembly paste off the pad shims and brake pads. Contaminated brake discs or brake pads reduce stopping ability. Keep grease and assembly paste off the brake discs and brake pads.
  14. Install the brake pads and pad shims correctly. Install the brake pad with the wear indicator (C) on the upper inside. If you are reusing the brake pads, always reinstall the brake pads in their original positions to prevent a momentary loss of braking efficiency.
  15. Pivot the caliper down into position. Install the flange bolt (A), and tighten it to the specified torque.
  16. Clean the mating surfaces of the brake disc and the inside of the wheel, then install the front wheels.
  17. Press the brake pedal several times to make sure the brakes work. NOTE: Engagement may require a greater pedal stroke immediately after the brake pads have been replaced as a set. Several applications of the brake pedal will restore the normal pedal stroke.
  18. Add brake fluid as needed.
  19. After installation, check for leaks at hose and line joints or connections, and retighten if necessary. Test-drive the vehicle, then recheck for leaks (see «BRAKE HOSE AND LINE INSPECTION»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).

Scheme 25

Scheme 25: Runout
  1. Raise the front of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the front wheels.
  3. Remove the brake pads (see «REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  4. Inspect the brake disc surface for damage and cracks. Clean the brake disc thoroughly, and remove all rust.
  5. Install suitable flat washers (A) and wheel nuts (B), and tighten the wheel nuts to the specified torque to hold the brake disc securely against the hub.
  6. Set up the dial gauge against the brake disc as shown, and measure the runout at 10 mm (3/8 in.) from the outer edge of the brake disc. Brake disc runout: Service limit: 0.04 mm (0.0016 in.)
  7. If the brake disc is beyond the service limit, refinish the brake disc with a commercially available on-car brake lathe. Max. refinishing limit: 26.0 mm (1.02 in.) NOTE: If the brake disc is beyond the service limit for refinishing, replace it (see «FRONT BRAKE DISC REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__front-brake-disc-replacement) ). A new brake disc should be refinished if its runout is greater than 0.04 mm (0.0016 in.).

Scheme 26

Scheme 26: Thickness and Parallelism
  1. Raise the front of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the front wheels.
  3. Remove the brake pads (see «REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  4. Using a micrometer, measure the brake disc thickness at eight points, about 45° apart and 10 mm (3/8 in.) in from the outer edge of the brake disc. Replace the brake disc if the smallest measurement is less than the max. refinishing limit. Brake disc thickness: Standard: 27.9-28.1 mm (1.10-1.11 in.) Max. refinishing limit: 26.0 mm (1.02 in.) Brake disc parallelism: 0.015 mm (0.0006 in.) max. NOTE: This is the maximum allowable difference between the thickness measurements.
  5. If the brake disc is beyond the service limit for parallelism, refinish the brake disc with a commercially available on-car brake lathe. NOTE: If the brake disc is beyond the service limit for refinishing, replace it (see «FRONT BRAKE DISC REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__front-brake-disc-replacement) ).

Front Brake Disc Replacement

Note. Keep any grease off the brake disc and brake pads.

Scheme 27

Scheme 27: Front Brake Disc Replacement

Scheme 28

Scheme 28
  1. Raise the front of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the front wheel.
  3. Remove the brake hose bracket mounting bolt (A).
  4. Remove the brake caliper bracket mounting bolts (B), then remove the caliper assembly (C) from the knuckle. To prevent damage to the caliper assembly or brake hose, use a short piece of wire to hang the caliper assembly from the undercarriage. Do not twist the brake hose excessively.
  5. Remove the brake disc flat screws (A).
  6. Remove the brake disc (B) from the hub bearing unit. NOTE: If the brake disc is stuck to the hub bearing unit, thread two 8 x 1.25 mm bolts (C) into the brake disc to push it away from the hub bearing unit. Turn each bolt 90 degrees to prevent the brake disc from binding.
  7. Install the brake disc in the reverse order of removal. NOTE: Before installing the brake disc, clean the mating surfaces of the hub bearing unit and the inside of the brake disc.
  8. Clean the mating surfaces of the brake disc and the inside of the wheel, then install the front wheel.

Front Brake Caliper Overhaul

CAUTIONFrequent inhalation of brake pad dust, regardless of material composition, could be hazardous to your health. Avoid breathing dust particles. Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.

Remove, disassemble, inspect, reassemble, and install the caliper, and note these items

Note. Make sure that the caliper pins are installed correctly. Upper caliper pin B and lower caliper pin A are different. If these caliper pins are installed in the wrong location, it will cause vibration, uneven or rapid pad wear, and possibly uneven tire wear.

Scheme 29

Scheme 29
  1. Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water.
  2. To prevent dripping brake fluid, cover disconnected hose joints with rags or shop towels.
  3. Clean all parts in brake fluid and air dry; blow out all passages with compressed air.
  4. Before reassembling, check that all parts are free of dirt and other foreign particles.
  5. Replace parts with new ones as specified in the illustration.
  6. Make sure no dirt or other foreign matter gets in the brake fluid.
  7. Make sure no grease or oil gets on the brake discs or pads.
  8. When reusing brake pads, always reinstall them in their original positions to prevent loss of braking efficiency.
  9. Do not reuse drained brake fluid. Use only clean Acura DOT 3 Brake Fluid from an unopened container. Using a non-Acura brake fluid can cause corrosion and shorten the life of the system.
  10. Do not mix different brands of brake fluid as they may not be compatible.
  11. Coat the pistons, piston seal grooves, and caliper bores with clean brake fluid.
  12. Replace all rubber parts with new ones whenever disassembled.
  13. After installing the caliper, check the brake hose and line for leaks, interference, and twisting.
  14. When you apply the silicone grease, make sure not to get any on the terminal part of the connectors and surrounding switches. Also do not touch the switches and the terminal part of the connectors with hands or gloves that have silicone grease on them.

Master Cylinder Replacement

Note. Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water. Be careful not to damage or deform the brake lines during removal and installation. To prevent the brake fluid from flowing, plug and cover the hose ends and joints with a shop towel or equivalent.

Scheme 30

Scheme 30: Master Cylinder Replacement
  1. Open the air cleaner housing cover (see «AIR CLEANER ELEMENT INSPECTION/ REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical/#intake-air-system) ).
  2. Remove the reservoir cap and the brake fluid from the master cylinder reservoir with a syringe.
  3. Disconnect the brake fluid level switch connector (A).
  4. Disconnect the brake lines (B) from the master cylinder (C). To prevent spills, cover the hose joints with rags or shop towels.
  5. Remove the master cylinder mounting nuts (D).
  6. Remove the master cylinder from the brake booster (E). Be careful not to bend or damage the brake lines when removing the master cylinder.
  7. Remove the O-ring (F) from the master cylinder. NOTE: Replace the O-ring whenever the master cylinder is removed.
  8. Install the master cylinder in the reverse order of removal, and note these items: Check the brake booster pushrod clearance (see «BRAKE BOOSTER PUSHROD CLEARANCE ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__brake-booster-pushrod-clearance-adjustment) ). Coat the new O-ring with silicone oil (Shin-Etsu KF 54). When you apply the silicone oil, make sure not to get any on the terminal part of the connectors and surrounding switches. Also do not touch the switches and the terminal part of the connectors with hands or gloves that have silicone grease on them. Check the brake pedal height and free play after installing the master cylinder, and adjust it if necessary (see «BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  9. Bleed the brake system (see «BRAKE SYSTEM BLEEDING»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__brake-system-bleeding) ).
  10. Spin the wheels to check for brake drag.

Scheme 31

Scheme 31: Master Cylinder Inspection
  1. Inspect and note these items: Before reassembling, check that all parts are free of dirt and other foreign particles. Do not try to disassemble the master cylinder assembly. Replace the master cylinder assembly with a new part if necessary. Do not allow dirt or foreign matter to contaminate the brake fluid.

Functional Test

  1. With the ignition switch at LOCK (0), press the brake pedal several times to deplete the vacuum reservoir, then press the brake pedal hard, and hold it for 15 seconds. If the brake pedal sinks, either the master cylinder is bypassing internally, or the brake system is leaking. Inspect the brake hoses and lines (see «BRAKE HOSE AND LINE INSPECTION»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  2. Start the engine with the brake pedal pressed. If the brake pedal sinks slightly, the vacuum booster is operating normally. If the brake pedal height does not vary, do the brake system test (see «BRAKE SYSTEM INSPECTION AND TEST»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__brake-system-inspection-and-test) ).

Scheme 32

Scheme 32: Leak Test
  1. Press the brake pedal with the engine running, then stop the engine. The brake pedal height should not vary while pressed for 30 seconds. If the pedal height rises, go to step 6 . If it does not rise, go to step 2.
  2. Start the engine and let it idle for 30 seconds. Turn the ignition switch to LOCK (0), and wait 30 seconds. Press the brake pedal several times using normal pressure. When the pedal is first pressed, it should be low. On consecutive applications, the pedal height should gradually rise. Does the pedal rise on each consecutive application? If it rises, the booster is OK. If it does not, go to step 3.
  3. Disconnect the brake booster vacuum hose (A) at the booster. The check valve is built into the hose.
  4. Start the engine, and let it idle. There should be vacuum available. If no vacuum is available, the check valve is not working properly. Replace the brake booster vacuum hose and check valve, and retest. If vacuum is found, go to step 5.
  5. With the ignition switch at LOCK (0), reconnect the vacuum hose to the brake booster.
  6. Start the engine, and then pinch the brake booster vacuum hose between the check valve and the booster.
  7. Turn the ignition switch to LOCK (0), and wait 30 seconds. Press the brake pedal several times using normal pressure. When the pedal is first pressed, it should be low. On consecutive applications, the pedal height should gradually rise. If the pedal position does not vary, inspect the O-ring between the master cylinder and booster. If the O-ring is OK, replace the brake booster. If the pedal position varies, replace the brake booster vacuum hose/check valve assembly.

Brake Booster Pushrod Clearance Adjustment

Special Tools Required

Booster piston holder 070AB-SJA0100

Note. Brake booster pushrod to piston clearance must be checked and readjusted before installing a new master cylinder. The master cylinder assembly comes with a tool that must be used to adjust the clearance between the brake booster pushrod and the master cylinder piston. Use only the tool that comes with the new master cylinder to check the pushrod clearance. Do not use any other tool. Make sure to discard the tool supplied with the master cylinder after its use. The brake booster must be installed on the vehicle before doing the pushrod clearance adjustment. If the booster is removed, check the pushrod length (A) as shown. If the length is incorrect, loosen the pushrod locknut (B), and turn the yoke (C) in or out to adjust.

Scheme 33

Scheme 33: Brake Booster Pushrod Clearance Adjustment

Scheme 34

Scheme 34
  1. Measure the clearance between the tool (A) supplied with master cylinder and brake booster pushrod (B). Make sure that the tool is lying flat against the surface (C) of the brake booster, and that the tip of the tool contacts the pushrod. If the tool will not lie flat (D) or there is a gap (E) between the tool and the pushrod, go to step 2. If the clearance is correct, go to step 3 .
  2. If the clearance is incorrect, use the booster piston holder to hold the pushrod (A) and turn the adjusting screw (B) clockwise to inward or counterclockwise to outward.
  3. Install the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__master-cylinder-replacement) ).

Scheme 35

Scheme 35: Brake Booster Replacement

Scheme 36

Scheme 36

Scheme 37

Scheme 37
  1. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/ REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical/#intake-air-system) ).
  2. Remove the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__master-cylinder-replacement) ).
  3. Remove the brake lines (A) from the VSA modulator-control unit (B).
  4. Disconnect the brake booster vacuum hose (C) from the brake booster.
  5. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/mdx/ii-2006-2010/remont/exteriorinterior-trim/#dashboard) ).
  6. Remove the lock pin (A) and the joint pin (B), then disconnect the yoke from the brake pedal.
  7. Remove the brake booster mounting nuts (C).
  8. Remove the brake booster (A) from the engine compartment. NOTE: Be careful not to damage the booster surfaces and threads of the booster stud bolts. Be careful not to bend or damage the brake lines.
  9. Install the brake booster in the reverse order of removal, and note these items: Adjust the pushrod clearance before installing the brake booster (see «BRAKE BOOSTER PUSHROD CLEARANCE ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__brake-booster-pushrod-clearance-adjustment) ). Install the master cylinder after installing the brake booster (see «MASTER CYLINDER REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__master-cylinder-replacement) ). Check the brake pedal height and free play after installing the master cylinder, and adjust it if necessary (see «BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ). Bleed the brake system (see «BRAKE SYSTEM BLEEDING»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__brake-system-bleeding) ).

Rear Brake Pad Inspection and Replacement

Special Tools Required

Brake caliper piston compressor 07AAE-SEPA101

CAUTIONFrequent inhalation of brake pad dust, regardless of material composition, could be hazardous to your health. Avoid breathing dust particles. Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.

Scheme 38

Scheme 38: Inspection
  1. Raise the rear of the vehicle, arid support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the rear wheels.
  3. Check the thickness (A) of the inner pad (B) and outer pad (C). Do not include the thickness of the backing plate.
  4. If the brake pad thickness is less than the service limit, replace the rear brake pads as a set.
  5. Clean the mating surfaces of the brake disc/drum and the inside of the wheel, then install the rear wheels.

Scheme 39

Scheme 39: Replacement

Scheme 40

Scheme 40

Scheme 41

Scheme 41

Scheme 42

Scheme 42

Scheme 43

Scheme 43

Scheme 44

Scheme 44
  1. Remove some brake fluid from the master cylinder.
  2. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  3. Remove the rear wheels.
  4. Remove the flange bolt (A), and pivot the caliper (B) up out of the way. Check the hose and pin boots for damage and deterioration.
  5. Remove the pad shims (A) and brake pads (B).
  6. Remove the pad retainers (A). NOTE: The upper and lower pad retainers are different. During installation, make sure the pad retainers are in their proper positions.
  7. Clean the caliper bracket (B) thoroughly; remove any rust, and check for grooves and cracks. Verify that the caliper pins (C) move in and out smoothly. Clean and lube if needed.
  8. Inspect the brake disc/drum, and check for damage and cracks (see «REAR BRAKE DISC INSPECTION»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  9. Install the pad retainers. Wipe excess assembly paste off the retainers. Keep the assembly paste off the discs and pads.
  10. Mount the brake caliper piston compressor tool (A) on the caliper body (B).
  11. Press in the piston with the brake caliper piston compressor tool so the caliper will fit over the brake pads. Make sure the piston boot is in position to prevent damaging it when pivoting the caliper down. NOTE: Be careful when pressing in the piston; brake fluid might overflow from the master cylinder's reservoir. If brake fluid gets on any painted surface, wash it off immediately with water.
  12. Remove the brake caliper piston compressor tool.
  13. Apply a thin coat of M-77 assembly paste (P/N 08798-9010) to the pad side of the shims (A), the back of the brake pads (B), and the other areas indicated by the arrows. Wipe excess assembly paste off the pad shims and brake pads. Contaminated brake disc/drums or brake pads reduce stopping ability. Keep grease and assembly paste off the brake disc/drums and brake pads.
  14. Install the brake pads and pad shims correctly. Install the brake pad with the wear indicator (C) on the bottom inside. If you are reusing the brake pads, always reinstall the brake pads in their original positions to prevent a momentary loss of braking efficiency.
  15. Pivot the caliper down into position. Install the flange bolt (A), and tighten it to the specified torque.
  16. Clean the mating surfaces of the brake disc/drum and the inside of the wheel, then install the rear wheels.
  17. Press the brake pedal several times to make sure the brakes work. NOTE: Engagement may require a greater pedal stroke immediately after the brake pads have been replaced as a set. Several applications of the brake pedal will restore the normal pedal stroke.
  18. Add brake fluid as needed.
  19. After installation, check for leaks at hose and line joints or connections, and retighten if necessary. Test-drive the vehicle, then check for leaks (see «BRAKE HOSE AND LINE INSPECTION»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).

Scheme 45

Scheme 45: Runout
  1. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the rear wheels.
  3. Remove the brake pads (see «REAR BRAKE PAD INSPECTION AND REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__rear-brake-pad-inspection-and-replacement) ).
  4. Inspect the brake disc/drum surface for damage and cracks. Clean the brake disc/drum thoroughly, and remove all rust.
  5. Install suitable flat washers (A) and wheel nuts (B), and tighten the wheel nuts to the specified torque to hold the brake disc/drum securely against the hub.
  6. Set up the dial gauge against the brake disc/drum as shown, and measure the runout at 10 mm (3/8 in.) from the outer edge of the brake disc/drum. Brake disc/drum runout: Service limit: 0.04 mm {0.0016 in.)
  7. If the brake disc/drum is beyond the service limit, refinish the brake disc/drum with a commercially available on-car brake lathe. Max. refinishing limit: 9.0 mm (0.35 in.) NOTE: If the brake disc/drum is beyond the service limit for refinishing, replace it (see «REAR BRAKE DISC REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__rear-brake-disc-replacement) ). A new brake disc/drum should be refinished if its runout is greater than 0.04 mm (0.0016 in.).

Scheme 46

Scheme 46: Thickness and Parallelism
  1. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the rear wheels.
  3. Remove the brake pads (see «REAR BRAKE PAD INSPECTION AND REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__rear-brake-pad-inspection-and-replacement) ).
  4. Using a micrometer, measure the brake disc/drum thickness at eight points, about 45° apart and 10 mm (3/8 in.) in from the outer edge of the brake disc/drum. Replace the brake disc/drum if the smallest measurement is less than the max. refinishing limit. Brake disc/drum thickness: Standard: 10.9-11.1 mm (0.43-0.44 in.) Max. refinishing limit: 9.0 mm (0.35 in.) Brake disc/drum parallelism: 0.015 mm (0.0006 in.) max. NOTE: This is the maximum allowable difference between the thickness measurements.
  5. If the brake disc/drum is beyond the service limit for parallelism, refinish the brake disc/drum with a commercially available on-car brake lathe. NOTE: If the brake disc/drum is beyond the service limit for refinishing, replace it (see «REAR BRAKE DISC REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__rear-brake-disc-replacement) ).

Rear Brake Disc Replacement

Note. Keep any grease off the brake disc/drum and brake pads.

Scheme 47

Scheme 47: Rear Brake Disc Replacement

Scheme 48

Scheme 48
  1. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the rear wheel.
  3. Remove the brake caliper bracket mounting bolts (A), then remove the caliper assembly (B) from the knuckle. To prevent damage to the caliper assembly or brake hose, use a short piece of wire to hang the caliper assembly from the undercarriage. Do not twist the brake hose excessively.
  4. Release the parking brake.
  5. Remove the brake disc/drum flat screws (A).
  6. Remove the brake disc/drum (B) from the hub bearing unit. NOTE: If may be necessary to back-off the parking brake adjuster nut (C) to remove the brake disc/drum from the hub bearing unit (see step 5 on «MINOR ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ). If the brake disc/drum has stuck to the hub bearing unit, thread two 8 x 1.25 mm bolts (D) into the brake disc/drum to push it away from the hub bearing unit. Turn each bolt 90 degrees to prevent the brake disc/drum from binding. After installation, check the parking brake, and adjust it necessary (see «PEDAL FREE PLAY»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  7. Install the brake disc/drum in the reverse order of removal. NOTE: Before installing the brake disc/drum, clean the mating surfaces of the hub bearing unit and the inside of the brake disc/drum.
  8. Clean the mating surfaces of the brake disc/drum and the inside of the wheel, then install the rear wheel.

Rear Brake Caliper Overhaul

CAUTIONFrequent inhalation of brake pad dust, regardless of material composition, could be hazardous to your health. Avoid breathing dust particles. Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.

Remove, disassemble, inspect, reassemble, and install the caliper, and note these items

Scheme 49

Scheme 49
  1. Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water.
  2. To prevent dripping brake fluid, cover disconnected hose joints with rags or shop towels.
  3. Clean all parts in brake fluid and air dry; blow out all passages with compressed air.
  4. Before reassembling, check that all parts are free of dirt and other foreign particles.
  5. Replace parts with new ones as specified in the illustration.
  6. Make sure no dirt or other foreign matter gets in the brake fluid.
  7. Make sure no grease or oil gets on the brake discs or pads.
  8. When reusing brake pads, always reinstall them in their original positions to prevent loss of braking efficiency.
  9. Do not reuse drained brake fluid. Use only clean Acura DOT 3 Brake Fluid from an unopened container. Using a non-Acura brake fluid can cause corrosion and shorten the life of the system.
  10. Do not mix different brands of brake fluid as they may not be compatible.
  11. Coat the pistons, piston seal grooves, and caliper bores with clean brake fluid.
  12. Replace all rubber parts with new ones whenever disassembled.
  13. After installing the caliper, check the brake hose and line for leaks, interference, and twisting.
  14. When you apply the silicone grease, make sure not to get any on the terminal part of the connectors and surrounding switches. Also do not touch the switches and the terminal part of the connectors with hands or gloves that have silicone grease on them.

Parking Brake Inspection

CAUTIONFrequent inhalation of brake pad dust, regardless of material composition, could be hazardous to your health. Avoid breathing dust particles. Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.

Scheme 50

Scheme 50

Scheme 51

Scheme 51

Scheme 52

Scheme 52
  1. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the rear wheels.
  3. Release the parking brake, and remove the rear brake disc/drum (see «REAR BRAKE DISC REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__rear-brake-disc-replacement) ).
  4. Check the parking brake linings (A) for cracking, glazing, wear, and contamination.
  5. Measure the parking brake lining thickness (B). Measurement does not include brake shoe thickness. Parking brake lining thickness: Standard: 3.9 mm (0.15 in.) Service limit: 1.0 mm (0.04 in.)
  6. If the parking brake lining thickness is less than the service limit, replace all of the parking brake shoes as a set (see «PARKING BRAKE SHOE REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__parking-brake-shoe-replacement) ).
  7. Check the hub (C) for smooth operation. If it requires servicing, replace the hub bearing unit (see «HUB BEARING UNIT REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/wheel-hubs/#rear-suspension) ).
  8. Measure the inside diameter of the parking brake drum with inside vernier calipers. Parking brake drum inside diameter: Standard: 210.0-210.1 mm (8.268-8.272 in.) Service limit: 211.0 mm (8.307 in.)
  9. If the inside diameter of the parking brake drum is more than the service limit, replace the brake disc/ drum.
  10. Check the parking brake disc/drum for scoring, grooves, and cracks.
  11. Clean the mating surfaces of the brake disc/drum and the inside of the wheel, then install the rear wheels.

Parking Brake Shoe Replacement

CAUTIONFrequent inhalation of brake pad dust, regardless of material composition, could be hazardous to your health. Avoid breathing dust particles. Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.

Scheme 53

Scheme 53: Disassembly

Scheme 54

Scheme 54

Scheme 55

Scheme 55

Scheme 56

Scheme 56

Scheme 57

Scheme 57

Scheme 58

Scheme 58
  1. Raise the rear of the vehicle, and support it with safety stands in the proper locations (see «LIFT AND SUPPORT POINTS»(/acura/mdx/ii-2006-2010/remont/paintcoatings/#general-information__lift-and-support-points) ).
  2. Remove the rear wheels.
  3. Release the parking brake, and remove the rear brake disc/drum (see «REAR BRAKE DISC REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__rear-brake-disc-replacement) ).
  4. Disconnect and remove the upper return springs (A).
  5. Remove the tension pins (A) by pushing the respective retainer (B) and turning the pin.
  6. Remove the strut (A).
  7. Lower the parking brake shoe assembly.
  8. Remove the forward brake shoe (A) and the adjuster assembly (B) by removing the lower return spring (C).
  9. Remove the rearward brake shoe by disconnecting the parking brake cable (A) from the parking brake lever (B).
  10. Remove the U-clip (A), wave washer (B), and parking brake lever (C) from the brake shoe (D).

Scheme 59

Scheme 59: Reassembly

Scheme 60

Scheme 60

Scheme 61

Scheme 61

Scheme 62

Scheme 62

Scheme 63

Scheme 63

Scheme 64

Scheme 64

Scheme 65

Scheme 65

Scheme 66

Scheme 66
  1. Apply Plastilube #2 grease to the sliding surface of the pivot pin (A) of the rearward brake shoe (B).
  2. Install the parking brake lever (C) and wave washer (D) on the pivot pin, and secure with a new U-clip (E). Install the wave washer with its convex side facing out. Pinch the U-clip securely to prevent the parking brake lever from coming off the brake shoe.
  3. Connect the parking brake cable (A) to the parking brake lever (B). Apply Plastilube #2 grease to the cable contact surface (C) on the backing plate.
  4. Apply a thin coat of Plastilube #2 grease to the shoe ends and strut ends (A), sliding surfaces (B), and opposite edges of the parking brake shoe (C) as shown. Wipe off any excess. Keep the grease off the brake linings.
  5. Install the tension pin (A), the retainer spring (B), and the retainer (C) on the rearward brake shoe (D). Make sure the tension pin does not contact the parking brake lever.
  6. Install connecting rods A and B on the adjuster nut (C). NOTE: Clean the threaded portions of connecting rod A and the sliding surface of connecting rod B, then coat them with rubber grease. Shorten connecting rod A by fully turning the adjuster nut.
  7. Position the brake shoe adjuster assembly (D) on the parking brake shoes.
  8. Hook the lower return spring (E) on the parking brake shoes.
  9. Install the rod spring (A) to the strut (B) first. Then install the strut on the parking brake shoes.
  10. Install the tension pin (A), the retainer spring (B), and the retainer (C) on the forward brake shoe (D).
  11. Install the forward upper return spring (A) as shown.
  12. Install the rearward upper return spring (B) as shown.
  13. Install the rear brake disc/drum and the rear brake caliper bracket in the reverse order of removal.
  14. Do the major parking brake adjustment (see «MAJOR ADJUSTMENT (TO BE DONE WHEN REPLACING PARKING BRAKE SHOES AND AFTER LINING SURFACE BREAK-IN)»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).

Parking Brake Shoe Lining Break-in

WARNINGDo this operation in a safe area.

Note. Do the brake lining surface break-in when replacing shoes with new brake linings and/or new rear brake disc/drum. Check the number of parking brake lever clicks. Adjust the parking brake before lining surface break-in (see MINOR ADJUSTMENT ).

  1. Park the vehicle on a firm, level surface.
  2. Release the parking brake pedal.
  3. Press the parking brake pedal 5 clicks.
  4. Drive the vehicle for 1/4 mile (400 m) at about 31 mph (50 km/h).
  5. Stop the vehicle, and release the parking brake for 5-10 minutes to allow the brake disc/drum to cool.
  6. Repeat steps 3 through 5 two more times.
  7. Check the parking brake pedal adjustment (see «PEDAL FREE PLAY»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).

Scheme 67

Scheme 67: Brake Pedal Replacement
  1. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/mdx/ii-2006-2010/remont/exteriorinterior-trim/#dashboard) ).
  2. Remove the TPMS control unit (see «TPMS CONTROL UNIT REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/wheel-tire-system/#tpms-tire-pressure-monitoring-system__tpms-control-unit-replacement) ).
  3. Disconnect the brake pedal position switch connector (A), and remove the harness clips.
  4. Remove the lock pin (B) and joint pin (C).
  5. Remove the harness and connector clips.
  6. Remove the brake pedal bracket mounting bolt (D) and nuts (E).
  7. Remove the brake pedal with bracket (F).
  8. Install in the reverse order of removal.
  9. Do the brake pedal and brake pedal position switch adjustment (see «BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).

Scheme 68

Scheme 68: Brake Hose and Line Inspection
  1. Inspect the brake hoses for damage, deterioration, leaks, interference, and twisting.
  2. Check the brake lines for damage, rusting, and leaks. Also check for bent brake lines.
  3. Check for leaks at hose and line joints and connections, and retighten if necessary.
  4. Check the master cylinder and the VSA modulator-control unit for damage and leaks. BRAKE HOSE AND LINE Connection Point Component Connected to Specified Torque Value Note A Front brake caliper Brake hose 34 N.m (3.5 kgf.m, 25 lbf.ft) Banjo bolt Bleed screw 9 N.m (0.9 kgf.m, 7 lbf.ft) B Rear brake caliper Brake hose 34 N.m (3.5 kgf.m, 25 lbf.ft) Banjo bolt Bleed screw 9 N.m (0.9 kgf.m, 7 lbf.ft) C Brake hose Brake line 15 N.m (1.5 kgf.m, 11 lbf.ft) Flare nut D Master cylinder Brake line 22 N.m (2.2 kgf.m, 16 lbf.ft) Flare nut E VSA modulator-control unit Brake line (12 mm nut) 22 N.m (2.2 kgf.m, 16 lbf.ft) Flare nut Brake line (10 mm nut) 15 N.m (1.5 kgf.m, 11 lbf.ft) Flare nut

Brake Hose Replacement

Note. Before reassembling, check that all parts are free of dirt and other foreign particles. Replace parts with new ones whenever specified to do so. Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water. To prevent the brake fluid from flowing, plug and cover the hose ends and joints with a shop towel or equivalent material.

Scheme 69

Scheme 69: Front

Scheme 70

Scheme 70

Scheme 71

Scheme 71

Scheme 72

Scheme 72
  1. Remove the front wheel.
  2. Disconnect the brake line (A) from the brake hose (B), then remove the brake hose clip (C).
  3. Remove the banjo bolt (A), and disconnect the brake hose (B) from the caliper.
  4. Remove the brake hose mounting bolt (C), then remove the brake hose.
  5. Install the brake hose (A) with the mounting bolt (B).
  6. Connect the brake hose to the caliper with the banjo bolt (C) and new sealing washers (D).
  7. Install a new brake hose clip (A) to the brake hose (B) on the bracket, then connect the brake line (C). Do not twist the brake hose.
  8. After installing the brake hose, bleed the brake system (see «BRAKE SYSTEM BLEEDING»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__brake-system-bleeding) ).
  9. Do the following checks: Check the brake hose and line joint for leaks, and tighten if necessary. Check the brake hoses for interference and twisting.
  10. Clean the mating surfaces of the brake disc and the inside of the wheel, then install the front wheel.

Scheme 73

Scheme 73: Rear

Scheme 74

Scheme 74

Scheme 75

Scheme 75

Scheme 76

Scheme 76
  1. Remove the rear wheel.
  2. Disconnect the brake lines (A) from the brake hoses (B), then remove the brake hose clips (C).
  3. Remove the front side brake hose (D).
  4. Remove the banjo bolt (A), and disconnect the brake hose from the caliper.
  5. Remove the rear side brake hose (B).
  6. Connect the rear side brake hose to the caliper with the banjo bolt (A) and new sealing washers (B).
  7. Install new brake hose clip (A) to the brake hoses (B) on the brackets, then connect the brake lines (C). Do not twist the brake hoses.
  8. After installing the brake hoses, bleed the brake system (see «BRAKE SYSTEM BLEEDING»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__brake-system-bleeding) ).
  9. Do the following checks: Check the brake hose and line joint for leaks, and tighten if necessary. Check the brake hoses for interference and twisting.
  10. Clean the mating surfaces of the brake disc/drum and the inside of the wheel, then install the rear wheel.

Scheme 77

Scheme 77: Exploded View

Note. The parking brake cables must not be bent or distorted. This will lead to stiff operation and premature cable failure. Refer to the EXPLODED VIEW as needed during this procedure.

Scheme 78

Scheme 78
  1. Loosen the parking brake cable adjusting nut (see «MINOR ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ).
  2. Remove the parking brake shoes, and disconnect the parking brake cable from the parking brake lever (see «PARKING BRAKE SHOE REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__parking-brake-shoe-replacement) ).
  3. Remove the parking brake cable mounting bolts from the backing plate (A).
  4. Pull the parking brake cable (B) and remove it from the backing plate.
  5. Reinstall the parking brake cable in the reverse order of removal, and note these items: Be careful not to bend or distort the cable. Connect the parking brake cable to the brake lever, and install the parking brake shoes and rear brake disc/drum (see «PARKING BRAKE SHOE REPLACEMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components__parking-brake-shoe-replacement) ). Do the parking brake adjustment (see «MINOR ADJUSTMENT»(/acura/mdx/ii-2006-2010/remont/mechanical-hydraulic/#conventional-brake-components) ). Apply the parking brake firmly 10 times then adjust it again.