Removal Procedure
- Block the wheels.
- Drain all of the air reservoirs. Refer to Draining Reservoirs
- Lift the inner fender panel. Refer to Wheelhouse Panel Replacement in Body Front End.
- Mark the air lines and connections in order to aid in the installation procedure.
- Remove the wiring harness connector from the stoplamp switch.
- Remove the air lines from the dual application valve. Refer to Hose and Line Replacement - Nylon and Metal Compression .
- Remove the dual application valve mounting bolts.
- Remove the dual application valve.
- Inspect the air lines for damage kinks or wear. Repair or replace the air lines as necessary.
A double check valve and line fittings are attached to the dual application valve. These may be removed from the dual application valve or taken out with the dual application valve as an assembly.
Installation Procedure
- Install the dual application valve.
- Install the dual application valve mounting bolts.
- Install the air lines to the dual application valve. Refer to Hose and Line Replacement - Nylon and Metal Compression .
- Check the brake pedal end play. Refer to Air Brake Pedal Replacement .
- Perform the air leakage test. Refer to Air Brake Application Valve Operational Check .
- Perform the operational test. Refer to Air Brake Application Valve Leakage Test .
- Remove the wheel blocks.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the dual application mounting valves to 40 N·m
(29 lb ft).