Brakes - Abnormal Front Brake Pad Wear

87ford11

Article No. ^ BRAKES - FRONT DISC - WEAR CAUSED BY
87-2-9 IMPROPERLY ADJUSTED REAR BRAKE
PROPORTIONING VALVE

^ BRAKES - VEHICLE HEIGHT SENSING PROPORTIONING VALVE ADJUSTMENT PROCEDURE


FORD 1986-87 TAURUS

LINCOLN-MERCURY 1986-87 SABLE


ISSUE: Abnormal front brake wear or a heavy front braking condition may be caused by an improperly adjusted rear height sensor brake proportioning valve.

ACTION: Use the following service procedure to check the adjustment of the rear height sensor brake proportioning valve.


1. Drive vehicle on a hoist or alignment machine so that it is resting on its wheels at curb height.

Figure 4:

2. Measure distance "A" between the operating rod upper nut and the retainer in the valve lever. See Figure 4. The distance for a nominal setting should be 16.3 +/- .3 mm (.64 +/- .012 inch). If the distance is outside of these settings, the rear height sensor brake proportioning valve should be adjusted as follows:

To adjust the rear height sensor brake proportioning valve, refer to Figure 4 and the following procedure:

To Decrease Pressure at Rear Brakes

1. Make sure suspension is at curb height.

2. Loosen set screw in adjusting sleeve.

3. Move adjusting sleeve UP - TOWARD VALVE BODY on operating rod 1 mm for each 413 kPa (60 PSI) pressure decrease.

4. Tighten set screw in adjusting sleeve in desired position.

To Increase Pressure at Rear Brakes

1. Make sure suspension is at curb height.

2. Loosen set screw in adjusting sleeve.

3. Move adjusting sleeve DOWN - AWAY FROM VALVE BODY on operating rod 1 mm for each 413 kPa (60 PSI) pressure increase.

4. Tighten set screw in desired position.

NOTE: The rear height sensor brake proportioning valve adjustment as outlined above should be added to the 1986 Taurus/Sable Shop Manual, Section 12-01-25.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"