Conventional Brake System Acura ZDX I

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Brake System Inspection and Test

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

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 (1.97 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 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 (0.39 in) or less, the master cylinder is OK. If the measurement increases more than 10 mm (0.39 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 and the lower caliper pin 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: Front caliper (see FRONT BRAKE CALIPER OVERHAUL ), rear caliper (see REAR 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 and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ), 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), or press the engine start/stop button to select the OFF mode, 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
4. Without removing the brake lines, unbolt and separate the master cylinder from the brake 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
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, then replace all rubber parts in the brake system that were exposed to contaminated fluid. If the brake fluid is OK, replace the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__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, then replace all rubber parts in the brake system that were exposed to 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/zdx/i-2009-2013/remont/anti-locktraction-control/#vsa-system-components__vsa-modulator-control-unit-removal-and-installation) ).

Scheme 4

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1. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
2. Turn the brake pedal position switch 45 ° counterclockwise, and pull it back until it is no longer touching the brake pedal.
3. Remove the driver's side kick panel (see step 3 under ) «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-door-areas) .
4. Remove the footrest (see step 4 under «CARPET REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#interior-trim__carpet-replacement) ).
5. Pull back the carpet, and pull back the insulation (A). Measure the pedal height (B) from the right side middle of the pedal pad (C) to the floor (D). Standard pedal height: 165 mm (6.50 in) Pedal Adjustment
6. Loosen the pushrod locknut (A), and screw the pushrod (B) 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 Adjustment
7. 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 (6) 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.
8. Install all removed parts in the reverse order of removal.
9. Check the brake pedal free play.

Scheme 7

1. With the ignition switch in LOCK (0), or press the engine start/stop button to select the OFF mode, inspect the free play (A) at the 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 (0.04-0.20 in)

Scheme 8

1. Press the parking brake pedal (A) with 294 N (30.0 kgf, 66.1 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: 8 to 10 clicks
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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__parking-brake-shoe-lining-break-in) ).

Scheme 9

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Release the parking brake pedal fully.
3. Press the parking brake pedal 1 click.
4. Tighten the 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 brake pedal is within the specified number of clicks (8 to 10 clicks).

Scheme 10

Scheme 11

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Release the parking brake pedal fully.
3. Loosen the adjusting nut (A).
4. Remove the rear wheels.
5. Remove the access plug (A).
6. Turn the ratchet teeth on the adjuster nut (B) with a brake adjuster tool or 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 between 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 spill brake fluid on the vehicle; it may damage the paint. If brake fluid gets on the paint, wash it off immediately with water.

Note. Do not reuse the drained brake fluid. Use only new 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. Make sure no dirt or other foreign matter gets in the brake fluid. 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.

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Scheme 15

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 in the sequence shown in illustration.
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 in the fluid.

Scheme 16

Parking Brake Switch Test

Note. If both the ABS/VSA indicator and the brake system indicator come on at the same time, check the VSA system for DTC's first (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 17

1. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
2. Disconnect the parking brake switch connector (A) from the parking brake switch (B).
3. Check for continuity between the switch 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 brake fluid level switch are OK, but the brake system indicator does not function, do the gauge control module self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__self-diagnostic-function) ).
4. Reconnect the parking brake switch connector.
5. Install the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).

Brake Fluid Level Switch Test

Note. If both the ABS/VSA indicator and the brake system indicator come on at the same time, check the VSA system for DTC's first (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 18

1. Disconnect the brake fluid level switch connector.
2. Check for continuity between the terminals (1) and (2) with the float in the down position and in the up position. 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 line (A). With the float up, there should be no continuity. NOTE: If the parking brake switch and the brake fluid level switch are OK, but the brake system indicator does not function, do the gauge control module self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__self-diagnostic-function) ).
3. Reconnect the brake fluid level switch connector.

Front Brake Pad Inspection and Replacement

Special Tools Required

Brake Caliper Piston Compressor 07AAE-SEPA101

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Scheme 20

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the front wheels.
3. Check the thickness (A) of the inner pad (B) and the outer pad (C). Do not include the thickness of the backing plate. Brake pad thickness: Standard: 11.0 mm (0.433 in) Service limit: 1.6 mm (0.063 in) Inner pad Outer pad
4. If any part of the brake pad thickness is less than the service limit, replace the brake pads as a set.
5. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the front wheels.

Scheme 21

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Scheme 26

1. Remove some brake fluid from the master cylinder.
2. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
3. Remove the front wheels.
4. Remove the flange bolt (A), and pivot the caliper body (B) up out of the way. Check the hose and the pin boots for damage and deterioration.
5. Remove the pad shims (A) and the brake pads (B).
6. Remove the upper and lower pad retainers (A). NOTE: The upper and lower pad retainers are different. During installation, make sure the pad retainers are in the 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 for runout, thickness, parallelism (see «FRONT BRAKE DISC INSPECTION»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ), and check for damage and cracks.
9. Apply a thin coat of M-77 assembly paste (P/N 08798-9010) to the retainer mating surface of the caliper bracket (indicated by the arrows).
10. Install the upper and lower pad retainers. Wipe off the excess assembly paste from the retainers. Keep the assembly paste away from the brake disc and the brake pads.
11. Install the brake caliper piston compressor tool (A) on the caliper body (B).
12. Press in the piston with the brake caliper piston compressor tool so the caliper body will fit over the brake pads. Make sure the piston boot is in position to prevent damaging it when pivoting the caliper body 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.
13. Remove the brake caliper piston compressor tool.
14. 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 off the excess assembly paste from the pad shims and brake pads friction material. Keep grease and assembly paste away from the brake disc and brake pads. Contaminated brake disc or brake pads reduce stopping ability.
15. Install the brake pads and pad shims correctly. Install the brake pad with the wear indicator (C) on the upper inside position. If you are reusing the brake pads, always reinstall the brake pads in their original positions to prevent a temporary loss of braking efficiency.
16. Pivot the caliper body down into position. Install the flange bolt (A), and tighten it to the specified torque.
17. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the front wheels.
18. 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.
19. Add brake fluid as needed.
20. 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__brake-hose-and-line-inspection) ).

Scheme 27

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the front wheels.
3. Remove the brake pads (see «REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
4. Using a micrometer (A), measure the brake disc thickness at eight points, about 45 ° apart and 10 mm (0.39 in) in from the outer edge of the brake disc. Replace the brake disc if the smallest measurement is less than the maximum refinishing limit. Brake disc thickness: Standard: 28.0 mm (1.102 in) Maximum refinishing limit: 26.0 mm (1.024 in) Brake disc parallelism*: 0.015 mm (0.00059 in) max. *: 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 Honda-approved 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__front-brake-disc-replacement) ).
6. Inspect the brake disc runout.

Scheme 28

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the front wheels.
3. Remove the brake pads (see «REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
4. Inspect the brake disc to wheel surface for damage and cracks. Clean the brake disc thoroughly, and remove all rust.
5. Install suitable flat washers (A) and the 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 (C) against the brake disc as shown in illustration, and measure the runout at 10 mm (0.39 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 Honda-approved commercially available on-car brake lathe. Maximum refinishing limit: 26.0 mm (1.024 in) NOTE: If the brake disc is beyond the service limit for refinishing, replace it (see «FRONT BRAKE DISC REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__front-brake-disc-replacement) ). if the brake disc is replaced with a new one, check the new disc for runout. If the new disc is out of specification, refinish the disc.
8. Install the brake pads (see «REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
9. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the front wheels.

Front Brake Disc Replacement

Note. Keep grease away from the brake disc and the brake pads.

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Scheme 30

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#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 flathead 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 between the hub bearing unit and the inside of the brake disc.
8. Inspect the brake disc runout (see «RUNOUT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
9. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the front wheel.

Front Brake Caliper Overhaul

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.

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

1. Make sure that the caliper pins are installed correctly. The upper caliper pin and the lower caliper pin are different. If these caliper pins are installed in the wrong location, it will cause vibration, uneven or rapid brake pad wear, and possibly uneven tire wear.
2. To prevent dripping brake fluid, cover disconnected hose joints with clean 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 new 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. Coat the pistons, the piston seal grooves, and the caliper bores with clean brake fluid.
11. Use recommended greases in the front caliper set.
12. After installing the caliper, check the brake hose and line for leaks, interference, and twisting.
13. Refer to the «EXPLODED VIEW»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) as needed during this procedure.

Scheme 31

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.

Note. Be careful not to damage or bend the brake lines during removal and installation. After removal, plug the ends of the hoses and the joints to prevent spilling brake fluid. Press the brake pedal several times to deplete the vacuum in the brake booster. Be careful when handling the master cylinder. Do not hold it at the piston, or the piston may separate from the body. If the piston separates from the body, then the master cylinder must be replaced. Do not reinsert the piston back into the master cylinder body.

Scheme 32

1. Remove the reservoir cap and the brake fluid from the master cylinder reservoir with a syringe.
2. Disconnect the brake fluid level switch connector (A).
3. Disconnect the brake lines (B) from the master cylinder (C). To prevent spills, cover the hose joints with clean rags or shop towels.
4. Remove the master cylinder mounting nuts (D).
5. Remove the master cylinder from the brake booster (E). Be careful not to bend or damage the brake lines when removing the master cylinder.
6. Remove the O-ring (F) from the master cylinder. NOTE: Replace the O-ring whenever the master cylinder is removed.
7. Install the master cylinder with a new O-ring in the reverse order of removal, and note these items: Check the brake booster pushrod clearance (see «BRAKE BOOSTER PUSHROD CLEARANCE ADJUSTMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__brake-booster-pushrod-clearance-adjustment) ). Coat the new O-ring with silicone oil (Shin-Etsu KF 54). Make sure not to get any silicone grease on the terminal part of the connectors and switches, especially if you have silicone grease on your hands or gloves. 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
8. Bleed the brake system (see «BRAKE SYSTEM BLEEDING»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__brake-system-bleeding) ).
9. Spin the wheels to check for brake drag.

Scheme 33

1. Remove the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__master-cylinder-replacement) ).
2. 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.
3. Install the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__master-cylinder-replacement) ).

Functional Test

1. With the ignition switch in LOCK (0), or press the engine start/stop button to select the OFF mode, 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__brake-hose-and-line-inspection) ).
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 TEST»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).

Scheme 34

1. Press the brake pedal with the engine running, then turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode. 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), or press the engine start/stop button to select the OFF mode, 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 it rises, the booster is OK. If it does not rise, go to step 3.
3. Disconnect the brake booster vacuum hose (A) at the booster. The check valve (B) is built into the hose. NOTE: If the check valve is faulty, replace the brake booster vacuum hose and the check valve as an assembly.
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 the check valve as an assembly, and retest. If vacuum is found, go to step 5.
5. With the ignition switch in LOCK (0), or press the engine start/stop button to select the OFF mode, 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), or press the engine start/stop button to select the OFF mode, 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 and the check valve as an 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 in illustration. If the length is incorrect, loosen the pushrod locknut (B), and turn the clevis (C) in or out to adjust.

Scheme 35

Scheme 36

1. Remove the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__master-cylinder-replacement) ).
2. 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 3. If the clearance is correct, go to step 4 .
3. If the clearance is incorrect, use the booster piston holder to hold the pushrod (A) and turn the adjusting screw (B) clockwise to move the pushrod inwards or counterclockwise to move it outward.
4. Install the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__master-cylinder-replacement) ).

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1. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
2. Remove the master cylinder (see «MASTER CYLINDER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__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/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
6. Remove the lock pin (A) and the clevis 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 brake booster mounting surfaces and the threads on the booster studs. Be careful not to bend or damage the brake lines. Use a new brake booster gasket (B) during reassembly.
9. Install the brake booster in the reverse order of removal, and note these items: Install the master cylinder after installing the brake booster (see «MASTER CYLINDER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ). Bleed the brake system (see «BRAKE SYSTEM BLEEDING»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__brake-system-bleeding) ).

Rear Brake Pad Inspection and Replacement

Special Tools Required

Brake Caliper Piston Compressor 07AAE-SEPA101

Scheme 40

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the rear wheels.
3. Check the thickness (A) of the inner pad (B) and the outer pad (C). Do not include the thickness of the backing plate. Brake pad thickness: Standard: 10.0 mm (0.394 in) Service limit: 1.6 mm (0.063 in)
4. If any part of the brake pad thickness is less than the service limit, replace the brake pads as a set.
5. Clean the mating surfaces between the brake disc/drum and the inside of the wheel, then install the rear wheels.

Scheme 41

Scheme 42

Scheme 43

Scheme 44

Scheme 45

Scheme 46

1. Remove some brake fluid from the master cylinder.
2. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
3. Remove the rear wheels.
4. Remove the flange bolt (A), and pivot the caliper body (B) up out of the way. Check the hose and pin boots for damage and deterioration.
5. Remove the pad shims (A) and the brake pads (B).
6. Remove the upper and lower pad retainers (A). NOTE: The upper and lower pad retainers are different. During installation, make sure the pad retainers are in the 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 for runout, thickness, parallelism (see «THICKNESS AND PARALLELISM»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ), and check for damage and cracks.
9. Apply a thin coat of M-77 assembly paste (P/N 08798-9010) to the retainer mating surface of the caliper bracket (indicated by the arrows).
10. Install the upper and lower pad retainers. Wipe off the excess assembly paste from the retainers. Keep the assembly paste away from the discs and pads.
11. Install the brake caliper piston compressor tool (A) on the caliper body (B).
12. Press in the piston with the brake caliper piston compressor tool so the caliper body will fit over the brake pads. Make sure the piston boot is in position to prevent damaging it when pivoting the caliper body 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.
13. Remove the brake caliper piston compressor tool.
14. 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 off the excess assembly paste from the pad shims and brake pads friction material. Keep grease and assembly paste away from the brake disc/drum and brake pads. Contaminated brake disc/drum or brake pads reduce stopping ability.
15. Install the brake pads and pad shims correctly. Install the brake pad with the wear indicator (C) on the bottom inside position. If you are reusing the brake pads, always reinstall the brake pads in their original positions to prevent a temporary loss of braking efficiency.
16. Pivot the caliper body down into position. Install the flange bolt (A), and tighten it to the specified torque.
17. Clean the mating surfaces between the brake disc/drum and the inside of the wheel, then install the rear wheels.
18. 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.
19. Add brake fluid as needed.
20. 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__brake-hose-and-line-inspection) ).

Scheme 47

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the rear wheels.
3. Remove the brake pads (see «REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
4. Using a micrometer (A), measure the brake disc/drum thickness at eight points, about 45 ° apart and 10 mm (0.39 in) in from the outer edge of the brake disc/drum. Replace the brake disc/drum if the smallest measurement is less than the maximum refinishing limit. Brake disc/drum thickness: Standard: 11.0 mm (0.433 in) Maximum refinishing limit: 9.0 mm (0.354 in) Brake disc/drum parallelism*: 0.015 mm (0.00059 in) max. *: 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 Honda-approved 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__rear-brake-disc-replacement) ).
6. Inspect the brake disc/drum runout.

Scheme 48

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the rear wheels.
3. Remove the brake pads (see «REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
4. Inspect the brake disc/drum to wheel 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 (C) against the brake disc/drum as shown in illustration, and measure the runout at 10 mm (0.39 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 Honda-approved commercially available on-car brake lathe. Maximum refinishing limit: 9.0 mm (0.354 in) NOTE: If the brake disc/drum is beyond the service limit for refinishing, replace it (see «REAR BRAKE DISC REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__rear-brake-disc-replacement) ). If the brake disc/drum is replaced with a new one, check the new disc/drum for runout. If the new disc/drum is out of specification, refinish the disc/drum.
8. Install the brake pads (see «REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
9. Clean the mating surfaces between the brake disc/drum and the inside of the wheel, then install the rear wheels.

Rear Brake Disc Replacement

Note. Keep grease away from the brake disc/drum and the brake pads.

Scheme 49

Scheme 50

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the rear wheel.
3. Release the parking brake.
4. 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.
5. Remove the brake disc/drum flathead screws (A).
6. Remove the brake disc/drum (B) from the hub bearing unit. NOTE: Remove the access plug (C), then if necessary, turn the adjuster nut (D) with a flat-tip screwdriver until the shoes become loose. If the brake disc/drum is stuck to the hub bearing unit, thread two 8 x 1.25 mm bolts (E) into the brake disc/drum to push it away from the hub bearing unit. Turn each bolt 90 degrees at a time to prevent the brake disc/drum from binding.
7. Install the brake disc/drum in the reverse order of removal, and note these items: Before installing the brake disc/drum, clean the mating surfaces between the hub bearing unit and the inside of the brake disc/drum. Adjust the parking brake (see «PARKING BRAKE INSPECTION AND ADJUSTMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
8. Inspect the brake disc/drum runout (see «RUNOUT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
9. Clean the mating surfaces between the brake disc/drum and the inside of the wheel, then install the rear wheel.

Rear Brake Caliper Overhaul

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.

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

1. Make sure that the caliper pins are installed correctly. The upper caliper pin and the lower caliper pin are different. If these caliper pins are installed in the wrong location, it will cause vibration, uneven or rapid brake pad wear, and possibly uneven tire wear.
2. To prevent dripping brake fluid, cover disconnected hose joints with clean 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 new 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. Coat the piston, the piston seal groove, and the caliper bore with clean brake fluid.
11. Use recommended greases in the rear caliper set.
12. After installing the caliper, check the brake hose and line for leaks, interference, and twisting.
13. Refer to the «EXPLODED VIEW»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) as needed during this procedure.

Scheme 51

Scheme 52

Note. Refer to the EXPLODED VIEW as needed during this procedure.

Scheme 53

Scheme 54

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the rear wheels.
3. Release the parking brake, and remove the brake disc/drum (see «REAR BRAKE DISC REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__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 (0.154 in) Service limit: 1.0 mm (0.039 in)
6. If any part of 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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__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/zdx/i-2009-2013/remont/suspension-rear/#rear-suspension) ).
8. Measure the inside diameter of the parking brake drum with inside vernier caliper. Parking brake drum inside diameter: Standard: 210.0 mm (8.268 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. Install the brake disc/drum and the brake caliper (see «REAR BRAKE DISC REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__rear-brake-disc-replacement) ).
12. Do the major parking brake adjustment (see «MAJOR ADJUSTMENT (TO BE DONE WHEN REPLACING PARKING BRAKE SHOES AND AFTER LINING SURFACE BREAK-IN)»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
13. Clean the mating surfaces between the brake disc/drum and the inside of the wheel, then install the rear wheels.

Parking Brake Shoe Replacement

Scheme 55

Scheme 56

Scheme 57

Scheme 58

Scheme 59

Scheme 60

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the rear wheels.
3. Release the parking brake, and remove the brake disc/drum (see «REAR BRAKE DISC REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__rear-brake-disc-replacement) ).
4. Disconnect and remove the upper return springs (A), then remove the shoe guide plate (B).
5. Remove the tension pins (A) by pushing the respective retainers (B) and turning the pin.
6. Remove the strut (A) and the rod spring (B).
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 (A) by disconnecting the parking brake cable (B) from the parking brake lever (C).
10. Remove the U-clip (A), the wave washer (B), and the parking brake lever (C) from the brake shoe (D).

Scheme 61

Scheme 62

Scheme 63

Scheme 64

Scheme 65

Scheme 66

Scheme 67

Scheme 68

1. Apply Molykote 44MA grease to the sliding surface of the pivot pin (A) of the rearward brake shoe (B).
2. Install the parking brake lever (C) and the 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 Molykote 44MA grease to the cable contact surface (C) on the backing plate.
4. Apply a thin coat of Molykote 44MA grease to the shoe ends and strut ends (A), sliding surfaces (B), and opposite edges of the parking brake shoe (C) as shown in illustration. 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 Molykote 44MA grease. Shorten connecting rod A by fully turning the adjuster nut.
7. Position the brake shoe adjuster assembly (0) 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 shoe guide plate (A).
12. Install the upper return springs (B) as shown in illustration.
13. Install the brake disc/drum and the rear brake caliper bracket (see «REAR BRAKE DISC REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__rear-brake-disc-replacement) ).
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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).
15. Clean the mating surfaces between the brake/drum and the inside of the wheel, then install the rear wheels.

Parking Brake Shoe Lining Break-in

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 MAJOR ADJUSTMENT (TO BE DONE WHEN REPLACING PARKING BRAKE SHOES AND AFTER LINING SURFACE BREAK-IN) ).

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 0.25 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 «PARKING BRAKE INSPECTION AND ADJUSTMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).

Scheme 69

1. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
2. Disconnect the brake pedal position switch connector (A).
3. Remove the harness clips and connector clip.
4. Remove the lock pin (B) and the clevis pin (C).
5. Remove the brake pedal bracket mounting bolt (D) and nuts (E).
6. Remove the brake pedal with bracket (F).
7. Remove the brake pedal position switch (G) by turning it 45 ° counterclockwise.
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/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).

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.

Scheme 70

Brake Hose 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.

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. After removal, plug the ends of the hoses and the joints to prevent spilling brake fluid.

Front

Scheme 71

Scheme 72

Scheme 73

Scheme 74

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the front wheel.
3. Disconnect the brake line (A) from the brake hose (B), then remove the brake hose clip (C).
4. Remove the banjo bolt (A), and disconnect the brake hose (B) from the caliper body.
5. Remove the brake hose mounting bolt (C), then remove the brake hose.
6. Install the brake hose (A) with the mounting bolt (B).
7. Connect the brake hose to the caliper body with the banjo bolt (C) and new sealing washers (D).
8. Install the 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.
9. After installing the brake hose, bleed the brake system (see «BRAKE SYSTEM BLEEDING»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__brake-system-bleeding) ).
10. 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.
11. Clean the mating surfaces between the brake disc and the inside of the wheel, then install the front wheel.

Scheme 75

Scheme 76

Scheme 77

Scheme 78

Scheme 79

Scheme 80

1. Raise and support the vehicle (see «LIFT AND SUPPORT POINTS»(/acura/zdx/i-2009-2013/remont/oem-general-information/#general-information__lift-and-support-points) ).
2. Remove the rear wheel.
3. Disconnect the brake lines (A) from the brake hose (B), then remove the brake hose clips (C).
4. Remove the front side brake hose (D).
5. Disconnect the brake line (A) from the brake hose (B), then remove the brake hose clip (C).
6. Remove the banjo bolt (A), and disconnect the brake hose from the caliper body.
7. Remove the rear side brake hose (B).
8. Connect the rear side brake hose to the caliper body with the banjo bolt (A) and new sealing washers (B).
9. Install the 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.
10. Install the new brake hose clips (A) to the brake hose (B) on the brackets, then connect the brake lines (C). Do not twist the brake hose.
11. After installing the brake hose, bleed the brake system (see «BRAKE SYSTEM BLEEDING»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__brake-system-bleeding) ).
12. 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.
13. Clean the mating surfaces between the brake disc/drum and the inside of the wheel, then install the rear wheel.

Scheme 81

Scheme 82

1. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
2. Remove the driver's side kick panel (see step 3 under ) «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-door-areas) ).
3. Release the parking brake pedal.
4. Disconnect the parking brake switch connector (A) from the parking brake switch, and remove the harness clip (B).
5. Remove the parking brake pedal bracket mounting bolt (C) and nuts (D).
6. Remove the parking brake adjusting nut (E) and the cable clip (F).
7. Disconnect the parking brake cable from the parking brake pedal assembly (G), and remove the parking brake pedal assembly.
8. Remove the screw (A) from the parking brake switch (B) align the hole (C) with the screw by pressing the parking brake pedal.
9. Install the parking brake pedal assembly in the reverse order of removal, and note there items: Be careful not to bend or distort the cable. Adjust the parking brake (see «PARKING BRAKE INSPECTION AND ADJUSTMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ).

Scheme 83

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 these procedure.

Scheme 84

Scheme 85

1. Release the parking brake pedal.
2. Remove the driver's side front door sill trim and the kick panel (see «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-door-areas) ).
3. Remove the footrest (see «CARPET REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#interior-trim__carpet-replacement) ).
4. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
5. Pull back the carpet from the driver's footwell to access the parking brake cables.
6. Disconnect and remove the return spring (A).
7. Remove the wire guide base (A), then disconnect the rear parking brake cables (B) from the equalizer (C).
8. Remove the parking brake cable from the parking brake pedal assembly (see step 6 ).
9. Remove the parking brake cable mounting hardware, then remove the cable.
10. Install the parking brake cable in the reverse order of removal.
11. Adjust the parking brake (see «PARKING BRAKE INSPECTION AND ADJUSTMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ). NOTE: Do the Major Adjustment first, then do the Minor Adjustment. Apply the parking brake firmly 10 times then adjust it again.

Scheme 86

Scheme 87

Scheme 88

Scheme 89

1. Release the parking brake pedal.
2. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
3. Disconnect and remove the return spring (A).
4. Remove the wire guide base (A), then disconnect the rear parking brake cables (B) from the equalizer (C).
5. Remove the parking brake shoes, and disconnect the parking brake cable from the parking brake lever (see «PARKING BRAKE SHOE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system__parking-brake-shoe-replacement) ).
6. Remove the spindle nut (see step 5 under «KNUCKLE/HUB BEARING UNIT REPLACEMENT»(/acura/zdx/i-2009-2013/remont/suspension-rear/#rear-suspension) ).
7. Remove the hub bearing unit mounting bolts (A).
8. Loosen the anchor nuts (B).
9. Pull back the hub bearing unit (C) and backing plate (D) until the parking brake cable clears the insertion part of the backing plate.
10. Remove the parking brake cable mounting bolts (E) from the backing plate.
11. Pull the parking brake cable(F)and remove it from the backing plate.
12. Remove the parking brake cable grommets (A), and pull out the parking brake cable from the body floor.
13. Remove the parking brake cable mounting hardware, then remove the cable.
14. Install the parking brake cables in the reverse order of removal. NOTE: Be careful not to bend or distort the cable.
15. Adjust the parking brake (see «PARKING BRAKE INSPECTION AND ADJUSTMENT»(/acura/zdx/i-2009-2013/remont/mechanical-hydraulic/#conventional-brake-system) ). NOTE: Do the Major Adjustment first, apply the parking brake firmly 10 times, then do the Minor Adjustment again.

See also:
• LIFT AND SUPPORT POINTS
• VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION
• DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION
• TRIM REMOVAL/INSTALLATION - DOOR AREAS
• CARPET REPLACEMENT
• GENERAL TROUBLESHOOTING INFORMATION
• SELF-DIAGNOSTIC FUNCTION
• AIR CLEANER ELEMENT INSPECTION/REPLACEMENT
• HUB BEARING UNIT REPLACEMENT
• CENTER CONSOLE REMOVAL/INSTALLATION
• FRONT BRAKE CALIPER OVERHAUL
• REAR BRAKE CALIPER OVERHAUL
• BRAKE BOOSTER REPLACEMENT
• MASTER CYLINDER REPLACEMENT
• PARKING BRAKE SHOE LINING BREAK-IN
• BRAKE HOSE AND LINE INSPECTION
• FRONT BRAKE DISC REPLACEMENT
• BRAKE BOOSTER PUSHROD CLEARANCE ADJUSTMENT
• BRAKE SYSTEM BLEEDING
• REAR BRAKE DISC REPLACEMENT
• PARKING BRAKE SHOE REPLACEMENT