6
Bleeding the Hydraulic Brake System
HYDRAULIC AND PARK BRAKE SYSTEMS
MASTER CYLINDER INSTALLATION
1.
Secure the master cylinder to the master cylinder bracket with two bolts and locknuts. Tighten the hardware to
16 ft-lb (22 N·m).
2.
Loosen the jam nut on the push rod clevis and secure the clevis to the brake pedal with a clevis pin and rue
pin
.
3.
Carefully secure the front and rear brake line flare fittings to the master cylinder. Finger-tighten the hardware.
4.
Use a flare-nut wrench to tighten the brake line fittings to 11 ft-lb (15 N·m).
5.
Fill the reservoir with brake fluid specified for this vehicle and bleed the hydraulic brake system.
the Hydraulic Brake System on page 6-24.
6.
Adjust the brake pedal stroke with the clevis and master cylinder push rod threaded connection. Tighten the jam
nut to 14 ft-lb (19 N·m).
See Brake Pedal Adjustment, Section 5, Page 5-5.
7.
Inspect the brake system.
See Brake System Inspection on page 6-1.
2038
Figure 6-23
Master Cylinder Rod and Brake Pedal
BLEEDING THE HYDRAULIC BRAKE SYSTEM
See General Warnings, Section 1, Page 1-2.
WARNING
• Do not bleed the brakes in the same manner as a DOT 3 system. Failure to bleed the brakes as
instructed in this manual will result in decreased braking performance due to air being trapped in
the hydraulic system.
• Use only DOT 5 brake fluid to fill the master cylinder. NEVER mix DOT 3, DOT 4, or DOT 5.1 with
DOT 5 as it IS NOT compatible.
The hydraulic system must be free of air. Air enters the hydraulic system whenever the system is opened and will
result in a “spongy” brake pedal.
The master cylinder controls two separate hydraulic sub-systems. The front two wheels are connected to the front
portion of the master cylinder and the rear wheels to the rear portion. One or both sub-systems may require bleeding,
depending on where the hydraulic system was opened.
Page 6-24
2008-2012 All-Wheel Drive Maintenance and Service Manual
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