Load Compensator: Testing and Inspection

Brake Pressure Regulator, Checking And Adjusting
Special Tools And Equipment





^ VAG 1310 A Brake pressure gauge





The brake pressure regulator is mounted on a bracket and attached to the rear axle. The regulator is controlled from the rear axle by a spring.

Checking Function
- Depress brake pedal firmly once and release quickly (vehicle on ground).
^ Brake pressure regulator must move

Checking And Adjusting
Requirements
^ vehicle emptied of all cargo and passengers
^ driver (approx. 75 kg [165 lb.)) in driver's seat
^ full fuel tank
^ full windshield washer / headlight washer reservoir
^ spare tire in place
- Lift vehicle and connect pressure gauges to left front and right rear calipers.
- Bleed both gauges.
- Lower vehicle and bounce rear of vehicle several times.
- Depress brake pedal to obtain specified pressure at front axle, then read pressure at rear axle.
- Compare reading with specifications and adjust if necessary.





Specifications For Load Dependent Brake Pressure Regulator

Brake Pressure Regulator, Adjusting
Pressure test result for rear axle too high:
- Release tension on regulator spring.

Pressure test result for rear axle too low:
- Increase tension on regulator spring.

Note:
Do not adjust with the brake pedal depressed. Use the following work sequence:
- Read pressure
- Release brake pedal.
- Adjust spring.
- Depress brake pedal again.
- Read pressure and if necessary, readjust.
- Remove pressure gauges and bleed brake system. Using US1116 Pressure Bleeder