This valve is used on all models with disc brakes. The valve itself is a combination of:
- The metering valve, which will not allow the front disc brakes to engage until the rear brakes contact the drum.
- The failure warning switch, which notifies the driver if one of the systems has a leak.
- The proportioner which limits rear brake pressure and delays rear wheel skid.
REMOVAL & INSTALLATION
See Figure 1
- Disconnect the hydraulic lines and plug to prevent dirt from entering the system.
- Disconnect the warning switch harness.
- Remove the retaining bolts and remove the valve. Tighten the bolts to 18 ft. lbs. (25 Nm).
- Install the valve and bleed the brake system.
- Raise the vehicle and support it with jackstands.
- Remove the shield retainers and shield from the vehicle.
- Disconnect the brake lines at the valve. Plug or cap the lines and ports.
- Unplug the electrical connector.
- Unfasten the Allen bolts connecting the valve to the Brake Pressure Modulator Valve (BPMV).
- Remove the valve, then transfer the tubes to the new valve.
- Install the tubes until they are firmly seated.
- Install the valve. Tighten the bolts in two steps, first tighten the Allen bolts to 6 ft. lbs. (8 Nm) and then to 12 ft. lbs. (16 Nm).
- Connect the brake lines and engage the electrical connector.
- Install the shield and tighten the retainers to 8 ft. lbs. (12 Nm).
- Bleed the system.