Brake Proportioning/Combination Valve: Service and Repair

Fig. 53 Replacement Of Proportioning Valves:

Proportioning valves should never be disassembled.
1. Remove HCU as described under "Hydraulic Control Unit" found in section.
2. Remove required valve from HCU.
3. Reverse procedure to install, torquing proportioning valve into valve body to 106 inch lbs.