Fig. 8 Open Bleeder Screw at Least One Full Turn

(Typical)

Repeat the procedure at all the other remaining bleeder screws. Then check the pedal for travel. If pedal travel is excessive or has not been improved. Enough fluid has not passed through the system to expel all the trapped air. Be sure to monitor the fluid level in the pressure bleeder. It must stay at the proper level so air will not be allowed to reenter the brake system through the master cylinder.

BLEEDING WITHOUT A PRESSURE BLEEDER

If a pressure bleeder is not available. A good brake fluid flow can be obtained by manual bleeding of the brake hydraulic system, following these steps.

(1)Pump the brake pedal three or four times and hold it down before the bleeder screw is opened.

(2)Then open the bleeder screw at least 1 full turn. When the bleeder screw opens the brake pedal will drop all the way to the floor.

(3)Release the brake pedal only after the bleeder screw is closed.

(4)Repeat steps 1 through 3, four or five times, at each bleeder screw. This should pass a sufficient amount of fluid to expel all the trapped air from the brake system. Be sure to monitor the fluid level in the master cylinder, so it stays at a proper level so air will not reenter the brake system through the master cylinder.

Test drive vehicle to be sure brakes are operating correctly and that pedal is solid.

TEST FOR FLUID CONTAMINATION

Fig. 9 Wheel Stud Nut Tightening Sequence

Tighten all stud nuts to one-half specified torque. Repeat, fully tightening to 129 NIm (95 ft. lbs.).

BRAKE HOSE AND TUBING

INSPECTION OF BRAKE HOSE AND TUBING

Flexible rubber hose is used at both front brakes and at the rear axle. Inspection of brake hoses should be performed whenever the brake system is serviced and every 7,500 miles or 12 months, whichever comes first (every engine oil change). Inspect hydraulic brake hoses for severe surface cracking, scuffing, or worn spots. Should the fabric casing of the rubber hose be exposed due to cracks or abrasions in the rubber hose cover, the hose should be replaced immediately. Eventual deterioration of the hose can take place with possible burst failure. Faulty installation can cause twisting and wheel, tire or chassis interference (Figs. 10, 11 and 12).

The steel brake tubing should be inspected periodically for evidence of physical damage or contact with moving or hot components.