Brake Proportioning/Combination Valve: Service and Repair

REMOVAL PROCEDURE





1. Remove the battery.
2. Remove the bolts from the battery tray.
3. Remove the battery tray.





4. Disconnect the electrical connections from the solenoid and the motorpack.





5. Disconnect the brake pipes from the brake modulator assembly.





6. Disconnect the brake pipes (1,2) from the proportioning valve (3).





7. Remove the brake modulator assembly.

Important: The proportioning valve gasket (3) between the proportioning valve and the hydraulic modulator assembly (4) must be replaced whenever these components are separated.





8. Remove the brake proportioning valve (1) from the brake modulator assembly (4).

INSTALLATION PROCEDURE

Notice: Refer to Fastener Notice in Service Precautions.





1. Install the brake proportioning valve (2) to the brake modulator assembly (4) using a new gasket.
^ Tighten bolts to 12 Nm (106 inch lbs.).





2. Install the brake modulator assembly.





3. Connect the brake pipes to the proportioning valve.





4. Connect the brake pipes to the brake modulator assembly.





5. Connect the electrical connections to the solenoid and the motorpack.
6. Install the battery tray bolts.
^ Tighten the bolts to 6 Nm 53 inch lbs.
7. Install the battery.
8. Bleed the brake system.