For 1990-2009 cars only
Removal Procedure
- Block the wheels.
- Drain the air reservoirs. Refer to Draining Reservoirs .
- Remove the air lines from the towing vehicle protection valve. Refer to the following procedures:
- Remove the nuts, the washers, and the bolts.
- Remove the towing vehicle protection valve.
- Inspect the air lines for the following:
- Replace or repair the air lines as necessary.
| • | Damage |
| • | Kinks |
| • | Wear |
Installation Procedure
- Install the towing vehicle protection valve.
- Install the bolts, the washers, and the nuts.
- Install the air lines to the towing vehicle protection valve.
- Perform the operational test. Refer to Vehicle Tow Protection 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 towing vehicle protection valve nuts to 22 N·m
(16 lb ft).
