Range Rover HSE (LP) V8-4.6L (1997)
Brake Proportioning/Combination Valve: Service and Repair
NOTE: Numbers in parentheses ( ) below refer to numbers in illustration.
REMOVAL
1. Switch off ignition.
2. Operate the brake pedal 30 times. Pedal travel will increase slightly and reduced resistance will be felt as pressure decreases.
3. Wait for 60 seconds, press the brake pedal four more times. This procedure will ensure that all pressure is evacuated from the system.
WARNING: Before bleeding the system or working on any component in the brake system, the preceding steps MUST be carried out to
depressurize the accumulator.
4. Disconnect pipes (4) from Pressure Conscious Reducing Valve (PCRV).
5. Plug pipes and connections.
6. Remove 2 bolts (6) securing PCRV to valance. Remove PCRV.
INSTALLATION
1. Position PCRV to valance. Secure with bolts (6). Tighten to 8 Nm (6 ft. lbs.).
2. Remove plugs from PCRV and pipes.
3. Connect pipes (4) to PCRV. Tighten unions to 14 Nm (10 ft. lbs.).
4. Bleed brake system. See: Brake Bleeding