Hydraulic Brake System Bleeding Manual

Caution: Refer to Brake Fluid Caution in the Preface section.

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

1. Fill the master cylinder reservoir with brake fluid. Keep the reservoir at least half full during the bleeding procedure.



2. If the master cylinder is suspected of having air in its bore, it must be bled before proceeding to brake line bleeding.
3. Loosen the front brake pipe at the master cylinder.
4. Allow the brake fluid to flow from the front master cylinder port.
5. Tighten the front brake pipe into the master cylinder.
6. Loosen the front brake pipe on the master cylinder 1/4 turn.
7. Depress the brake pedal slowly until fluid is seen coming from the pipe fitting.
8. Tighten the front brake pipe into the master cylinder, while the pedal is being depressed.
9. Slowly release the pedal.

Notice: Refer to Fastener Notice in the Preface section.

10. Repeat the sequence until all the air is removed from the front, secondary, master cylinder bore and tighten the brake pipe-to-master cylinder nuts.

Tighten
Tighten the brake pipe-to-master cylinder nuts to 16 N·m (12 lb ft).




11. Loosen the rear brake pipe, rear port, at the master cylinder.
12. Allow the brake fluid to flow from the rear master cylinder port.
13. Tighten the rear brake pipe into the master cylinder.
14. Loosen the rear brake pipe at the master cylinder 1/4 turn.
15. Depress the brake pedal slowly until fluid is seen coming from the pipe fitting.
16. Tighten the rear brake pipe into the master cylinder while the pedal is being depressed.
17. Slowly release the pedal.
18. Repeat the sequence until all air is removed from the rear, primary, master cylinder bore and tighten the brake pipe-to-master cylinder nuts.




Important: To assist in freeing trapped air, tap lightly on the caliper casting with a rubber mallet.

19. Bleed the individual calipers and wheel cylinders.

19.1.

Place the wrench over the bleeder screw.

19.2.

Attach a transparent hose over the bleeder screw nipple. Submerge the other end of the hose in a transparent container of brake fluid.

19.3.

Loosen the bleeder screw.

19.4.

Apply the brake pedal slowly and hold.

19.5.

Tighten the bleeder screw.

19.6.

Release the brake pedal.

19.7.

Repeat the sequence until all air is removed from the brake pipes and tighten the bleeder screw.

Tighten
Tighten the front caliper bleeder valves to 8 N·m (71 lb in).




20. If more than one brake pipe is being bled, bleed in the following sequence:

20.1.

Right rear

20.2.

Left front

20.3.

Left rear

20.4.

Right front

21. Inspect the brake pedal and feel for sponginess. If the brake pedal exhibits this feel, repeat the bleeding procedure until the condition disappears.
22. When the bleeding procedure is completed on each wheel, inspect the reservoir fluid level. Fill as necessary.
23. Inspect for leaks with the engine running and the brakes applied.

Hydraulic Brake System Bleeding Pressure

Caution: Refer to Brake Fluid Caution in the Preface section.

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Notice: Pressure bleeding equipment must be of the diaphragm type. It must have a rubber diaphragm between the air supply and the brake fluid to prevent air, moisture, and other contaminants from entering the hydraulic system.

1. Clean the brake fluid reservoir cap and the area around the cap.
2. Remove the brake fluid reservoir cap.
3. Fill the master cylinder reservoir with clean DOT-3 brake fluid.
4. Install the J 43915 , or equivalent, to the brake fluid reservoir.
5. Connect the J 29532 to the adapter.
6. Pressurize the bleeder equipment to 138-172 kPa (20-25 psi).



7. If the master cylinder is suspected of having air in its bore, it must be bled before proceeding to the brake line bleeding.
8. Loosen the front brake pipe at the master cylinder.
9. Allow brake fluid to flow from the front master cylinder port until all the air is removed from the front master cylinder bore.

Notice: Refer to Fastener Notice in the Preface section.

10. Tighten the front brake pipe into the master cylinder.

Tighten
Tighten the brake pipe-to-master cylinder nuts to 16 N·m (12 lb ft).




11. Loosen the rear brake pipe, rear port at the master cylinder.
12. Allow brake fluid to flow from the rear master cylinder port until all the air is removed from the rear master cylinder bore.
13. Tighten the front brake pipe into the master cylinder.

Tighten
Tighten the brake pipe-to-master cylinder nuts to 16 N·m (12 lb ft).





Important: To assist in freeing trapped air, tap lightly on the caliper casting with a rubber mallet.

14. Bleed the individual calipers and wheel cylinders.

14.1.

Place the wrench over the bleeder screw.

14.2.

Attach a transparent hose over the bleeder screw nipple. Submerge the other end of the hose in a transparent container of brake fluid.

14.3.

Loosen the bleeder screw and allow the fluid to flow into the container until all the air is removed.

14.4.

Tighten the bleeder screw.

Tighten
Tighten the front caliper bleeder valves to 8 N·m (71 lb in).




15. If more than one brake pipe is being bled, bleed in the following sequence:

15.1.

Right rear

15.2.

Left front

15.3.

Left rear

15.4.

Right front

16. Check the brake pedal and feel for sponginess. If the brake pedal exhibits this feel, repeat the bleeding procedure until the condition disappears.
17. When the bleeding procedure is completed on each wheel, check the reservoir fluid level. Fill as necessary.
18. Check for leaks with the engine running and the brakes applied.