Hydraulic Brake System Bleeding (Manual)

Manual Bleeding Procedure


Hydraulic Brake System Bleeding

Tools Required
^ J 29532 Diaphragm Pressure Bleeder
^ J 39801-Vibe Pressure Bleeder Adapter

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: 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.

Caution: Refer to Brake Fluid Irritant Caution in Cautions and Notices.

Caution: Refer to Brake Fluid Caution in Cautions and Notices.

Notice: Refer to Filling the Master Cylinder Notice in Cautions and Notices.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Cautions and Notices.

Important: Bleed the hydraulic brake system in the following sequence:
1. The master cylinder
2. Right rear bleeder valve
3. Left rear bleeder valve
4. Right front bleeder valve
5. Left front bleeder valve

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

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

If you disconnect a brake pipe or a lifting 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, bleed the system at the bleeder valve for that wheel.



1. With the ignition switch in the OFF position and the brakes cool, press the brake pedal several times in order to deplete the vacuum assist system reserve.

Important: Maintain the fluid level above the MIN mark during the bleeding procedure.

2. Fill the reservoir with brake fluid. Refer to Master Cylinder Reservoir Filling.
3. Remove the bleeder valve cap.
4. Install a transparent hose (1) over the end of the bleeder valve (2). Submerge the other end of the hose in a transparent container (5) partially filled with brake fluid.
5. Have the assistant slowly press the brake pedal and maintain pressure on the brake pedal.
6. Loosen the bleeder valve in order to purge air from the wheel hydraulic circuit.
7. Close the bleeder valve.
Tighten
Tighten the bleeder valve to 8.3 N.m (73.5 lb in).
8. Have the second technician slowly release the pedal.
9. Wait 15 seconds.
10. Repeat this procedure until air (6) is purged from the wheel hydraulic circuit.
11. Install the bleeder valve cap.
12. Repeat this procedure at all bleeder valves that require bleeding.
13. Replenish the brake fluid in the master cylinder reservoir to the MAX mark and install the cap. Refer to Master Cylinder Reservoir Filling. Master Cylinder Reservoir Filling
14. Slowly press and release the brake pedal. Observe the feel of the brake pedal.
15. If the brake pedal feels spongy, repeat the bleeding procedure.
16. Inspect the hydraulic brake system for external leaks. Refer to Brake System External Leak Inspection. Brake System External Leak Inspection
17. Turn the ignition switch to the ON position with the engine OFF. Inspect the instrument cluster.
18. If the brake system warning lamp remains illuminated, refer to Symptoms - Hydraulic Brakes. Symptom Related Diagnostic Procedures