Grand Caravan FWD V6-3.3L VIN 3 Flex Fuel (2002)
Brake Proportioning/Combination Valve: Service and Repair
REMOVAL - PROPORTIONING VALVE (HEIGHT SENSING)
1. Using a brake pedal depressor, move and lock the brake pedal to a position past its first 1 inch of travel. This will prevent brake fluid from
draining out of the master cylinder when the brake tubes are removed from the proportioning valve.
2. Raise vehicle.
CAUTION: Before removing the brake tubes from the proportioning valve, the proportioning valve and the brake tubes must be thoroughly
cleaned. This is required to prevent contamination from entering the proportioning valve or the brake tubes.
3. Remove the four brake tubes from the inlet and outlet ports of the proportioning valve.
4. Remove the two bolts attaching the proportioning valve and bracket to the vehicle.
5. Slide the bracket out from under rear track bar bracket. Lower the valve down enough to pull its actuator rod out of the axle bracket and remove
the proportioning valve from the vehicle.
INSTALLATION - PROPORTIONING VALVE (HEIGHT SENSING)
1. Install the end of the actuator rod through the axle bracket grommet and slide the proportioning valve bracket under the rear track bar body
bracket.
2. Install the proportioning valve attaching bolts. Tighten the attaching bolts to a torque of 54 Nm (40 ft. lbs.).
3. Install the four chassis brake lines into the inlet and outlet ports of the proportioning valve. Tighten all tube nuts to a torque of 17 Nm (145 in.
lbs.).
CAUTION: The height sensing proportioning valve is not adjustable. No attempt should be made to adjust it.
4. Bleed the brake system thoroughly to ensure that all air has been expelled from the hydraulic system.
5. Lower the vehicle to the ground.
6. Road test the vehicle to verify proper operation of the brake system.
