Manual and Pressure Bleeding Procedures

CAUTION: Do not move the vehicle until a firm brake pedal is obtained. Air in the brake system can cause the loss of brakes with possible personal injury.

CAUTION: Refer to Brake Fluid Irritant Caution in Service Precautions.

CAUTION: If any brake component is repaired or replaced such that air is allowed to enter the brake system, the entire bleeding procedure MUST be followed. Unapproved or partial bleed procedures can allow air to remain in the brake system. This could result in reduced braking performance and possible personal injury.

NOTICE: Refer to Brake Fluid Damage to Electrical Connections Notice in Service Precautions.

IMPORTANT: Bleed the hydraulic brake system in the following sequence:





1. Left rear wheel cylinder
2. Load Sensing Proportioning Valve (non-ABS)
3. Right front caliper
4. Left front caliper

If air enters the hydraulic brake system due to low brake fluid level, bleed the system at the 4 bleeder valves.

If you disconnect a brake pipe from the master cylinder, bleed the system at the 4 bleeder valves.

If you disconnect a brake pipe or a fitting between the master cylinder and the wheels, bleed the system at the bleeder valve served by the brake pipe or fitting.

If you disconnect a brake pipe or brake hose at only 1 wheel, then bleed the system at the bleeder valve for that wheel.

MANUAL BLEEDING
1. Ensure the engine is OFF.
2. Press the brake pedal several times in order to remove the vacuum system reserve.
3. Clean around the master cylinder reservoir cap (1).
4. Remove the reservoir cap.
5. Fill the reservoir with brake fluid. Keep the reservoir at least one-half full during the bleeding operation.
6. Install the reservoir cap.





7. Remove the bleeder valve cap (1).





8. Attach a clear plastic or vinyl tube (1) to the bleeder valve. Submerge the other end of the tube in a clear container (2) partially filled with brake fluid.
9. Have a second technician press the brake pedal several times, and then hold it fully pressed.
10. With the brake pedal fully pressed, loosen the bleeder valve about 1/2 turn. The brake pedal should now fall all the way to the floor as brake fluid flows out of the bleeder valve into the clear fluid container.

NOTICE: Refer to Fastener Notice in Service Precautions.

11. Close the bleeder valve.
^ Tighten the wheel cylinder bleeder valve. Tighten the wheel cylinder bleeder valve to 7.5 Nm (66.4 inch lbs.).
^ Tighten the caliper bleeder valve. Tighten the caliper bleeder valve to 8.5 Nm (75.2 inch lbs.).

12. Have the second technician slowly release the pedal.
13. Repeat this procedure until air bubbles no longer appear in the clear fluid container.
14. Install the bleeder valve cap.
15. Repeat this procedure at all bleeder valves that require bleeding.
16. Replenish the brake fluid in the master cylinder reservoir to the MAX mark and install the cap.
18. Inspect the hydraulic brake system for leaks.
19. Inspect the brake pedal feel for sponginess and the brake indicator for an indication of an unbalanced pressure. Repeat the entire bleeding procedure to correct either of these conditions.

PRESSURE BLEEDING

^ Tools Required
- J 29532 Diaphragm Type Brake Bleeder
- J 37762 Pressure Brake Bleeder Adapter

NOTICE: Pressure bleeding equipment must be the diaphragm type and must have a rubber diaphragm between the air supply and the brake fluid. Air, moisture, oil and other contaminants can damage the hydraulic system.





1. Install a J 37762 to the master cylinder.
2. Charge the J 29532 to 140 to 172 kPa (20 to 25 psi).
3. Connect the J 29532 line to the J 37762 and open the line valve.
4. Remove the bleeder valve cap (1).





5. Attach a clear plastic or vinyl tube (1) to the bleeder valve. Submerge the other end of the tube in a clear container (2) partially filled with brake fluid.
6. Loosen the bleeder valve about 1/2 turn. Allow the fluid to flow until bubbles no longer appear in the fluid. Do not allow the J 29532 to run out of fluid. If the fluid should run out, air will enter the system and you must repeat the entire bleeding procedure.

NOTICE: Refer to Fastener Notice in Service Precautions.

7. Close the bleeder valve.
^ Tighten the caliper bleeder valve to 8.5 Nm (75.2 inch lbs.).
^ Tighten the wheel cylinder bleeder valve to 7.5 Nm (66.4 inch lbs.).

8. Install the bleeder valve cap.
9. Repeat this procedure at all bleeder valves that require bleeding.
10. Replenish the brake fluid in the master cylinder reservoir to the MAX mark and install the cap.
12. Inspect the hydraulic brake system for leaks.
13. Inspect the brake pedal feel for sponginess and the brake indicator for an indication of an unbalanced pressure. Repeat the entire bleeding procedure to correct either of these two conditions.
14. Remove the J 37762 and the J 29532 from the master cylinder.