Pressure

NOTE: Pressure bleeding equipment must be of the diaphragm type. It must hive a rubber diaphragm between the air supply and the brake fluid to prevent air, moisture and other contaminants from entering the hydraulic system. Clean Fluid reservoir cover and surrounding area. Inspect Fluid to be at proper level. Add clean brake fluid as required.

INSTALL OR CONNECT
1. Bleeder adapter J 35589 to brake fluid reservoir.
2. Bleeder adapter to pressure bleeding equipment.
3. Clear plastic bleeder hose to rearward bleeder valve. Submerge other end of bleeder hose in clean container partially filled with brake fluid. Adjust Pressure bleed equipment to 35-70 kPa (5-10 psi) and wait for approximately 30 seconds to insure there is no leakage. Pressure bleed equipment to 205-240 kPa (30-35 psi).
4. Proceed as follows with pressure bleeding equipment connected and pressurized.
a. With bleeder hose connected to rearward bleeder valve on hydraulic modulator, slowly open bleeder valve and allow fluid to flow until no air is seen in fluid.
b. Close valve when fluid flows without any air bubbles. Reopen and repeat until no air bubbles exist.
c. Relocate bleeder hose on the forward bleeder valve on the hydraulic modulator and repeat Steps 3 through 4b. Tighten Hydraulic modulator bleeder valve to 9 Nm (80 inch lbs.).

NOTE: Use a shop cloth to catch escaping brake fluid. Take care to prevent fluid from running down motor pack and into the bottom or electrical connector. A bleeder hose is not used to bleed brake pipe connections.

5. Proceed to bleed the hydraulic modulator brake pipe connections as follows with pressure bleeding equipment connected and pressurized.
a. Slowly open forward brake pipe tube nut on hydraulic modulator and check for air in escaping fluid.
b. When air flow ceases, immediately tighten tube nut. Tighten Tube nut to 23 Nm (17 ft. lbs.).
c. Repeat Steps 5a and 5b for remaining three brake pipe connections, moving from front to rear.
6. Raise vehicle and suitably support.
7. Proceed as follows to bleed wheel brakes in sequence. Bleed sequence:
- Right rear.
- Left rear.
- Right front.
- Left front.

a. Attach bleeder hose to bleeder valve and submerge opposite hose end in clean container partially filled with brake fluid.
b. Slowly open bleeder valve and allow fluid to flow.
c. Close valve when fluid begins to flow without any air bubbles. Tap lightly with a rubber mallet to dislodge any trapped air bubbles.
8. Repeat above sequence on left rear wheel brake.
9. Repeat above sequence on front wheel brakes.
10. Lower vehicle.
11. Remove bleeder adapter J 35589.
12. Check fluid level in reservoir and fill to the correct level using clean brake fluid, if necessary.
13. Install fluid reservoir cover and diaphragm assembly. Inspect With the ignition switch in the "RUN" position, apply brake pedal with moderate force and hold. Note pedal travel and feel. If pedal feels firm and constant and pedal travel is not excessive, start the engine. With the engine running, re-check the pedal travel. If it's still firm and constant and pedal travel is not excessive, go to Step 13. If pedal feels soft or has excessive travel either initially or after engine start. Use the Scan Tool, "Release" then "Apply" the motors 2 to 3 times and cycle the solenoids 5 to 10 times. Be sure to "Apply" the front and rear motors to ensure the pistons are in the upmost position. Now repeat bleeding procedure.
14. Road test the vehicle. Make several normal (non-ABS) stops from a moderate speed to ensure proper brake system function.