Removal Procedure
- Apply the parking brake.
- Block the wheels.
- Drain all of the air reservoirs. Refer to
Draining Reservoirs
in
Air Brakes.
- Remove the air lines at the two-speed rear axle shift quick release valve.
Refer to
Air Brake Quick Release Valve Replacement
Air Brakes.
- Remove the following components from the two-speed rear axle shift quick
release valve:
- Remove the two-speed rear axle shift quick release valve (4) from
the left side frame side rail (3).
- Inspect the air lines for the following conditions:
- Repair or replace the air lines as needed. Refer to
Hose and Line Replacement - Nylon and Metal Compression
in
Air Brakes.
Installation Procedure
- Install the two-speed rear axle shift quick release
valve (4) onto the left side frame side rail (3).
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.
- Install the following components to the two-speed rear axle shift quick release
valve:
Tighten
Tighten the nuts (1) to 22 N·m (16 lb ft).
- Install the air lines at the two-speed rear axle shift quick release valve
(4). Refer to
Hose and Line Replacement - Nylon Push-In Type Fitting
in Air Brakes.
- Start the engine. Charge the system to the air compressor governor cutout
point.
- Stop the engine.
- Inspect for air leaks using a soap solution.
- Verify proper operation of the two speed rear axle.
- Remove the wheel blocks.