Removal Procedure
- Block the wheels.
- Drain the air reservoirs. Refer to Draining Reservoirs .
- Remove the air lines from the valve. Refer to the following procedures:
- Remove the nuts, the washers, and the bolts.
- Remove the park control valve (chassis mounted) from the crossmember.
- Inspect the air lines for the following:
- Replace or repair the air lines as necessary.
Important: Tag or label the air lines for later installation.
| • | Damage |
| • | Kinks |
| • | Wear |
Installation Procedure
- Install the park control valve (chassis mounted) to the crossmember.
- Install the bolts, the washers, and the nuts.
- Install the air lines to the park control valve (chassis mounted).
- Perform the air leakage test. Refer to Chassis Mounted Park Control Valve Leakage Test .
- Perform the operational test. Refer to Chassis Mounted Park Control Valve Operational Check .
- 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 park control valve (chassis mounted) nuts to 22 N·m
(16 lb ft).
