Brake Proportioning/Combination Valve: Service and Repair

PRESSURE CONSCIOUS REDUCING VALVE (PCRV)
Service repair no - 70.25.21


Remove
1. Depressurize braking system.





2. RHD Vehicles Only: Release coolant reservoir from clips and bracket. Place reservoir aside for access to PCRV.
3. Position cloth beneath PCRV to catch fluid spillage.





4. Disconnect pipes from PCRV.
5. Plug pipes and connections.
6. Remove 2 bolts securing PCRV to valance. Remove PCRV.


Refit
7. Position PCRV to valance. Secure with bolts. Tighten to 8 Nm (6 ft. lbs.)
8. Remove plugs from PCRV and pipes.
9. Connect pipes to PCRV. Tighten unions to 14 Nm (10 ft. lbs.)
10. RHD Vehicles Only: Engage coolant reservoir beneath bracket. Secure to clips.
11. Bleed brake system.