| CAUTION: If the actuator will not hold pressure, do not remove the parking brake cable pin from the linkage, remove the cable from the actuator piston. The cable is under tension and removing the pin from the cable will cause the cable and linkage to spring and can result in personal injury. |
| Manually releasing the parking brake: To release the parking brake manually, simply remove the parking brake cable from the actuator piston. To do this, use two 3/4" end wrenches and loosen the jamb nut so the cable can be fully unthread from the actuator piston. Once the threads reach the end of the piston, the tension from the spring will be all but gone, and the cable end can be just allowed to hang in place. To ensure the jamb nut is not lost, either remove it from the piston or place some tape on the piston threads so it cannot vibrate off. |
1. Before beginning this adjustment, the parking brake lining wear adjustment must be made. Refer to Parking Brake Shoe Inspection . 2. Block the vehicle wheels. 3. Turn the ignition key ON. 4. Place the shift lever in the NEUTRAL position. 5. Loosen the parking brake jam nut on the actuator assembly.
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.
Notice: Use the correct part number for the 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.
6. Adjust the cable fitting.
Tighten
Tighten the jam nut to 45 N·m (33 lb ft).
7. Place the shift lever into the PARK position and apply the parking brake.
8. Measure the actuator cable/piston rod stroke. If the distance is not between 30-37 mm (1.20-1.44 in) while moving the shift lever from park to neutral, then refer to Park Brake Cable Service/Adjustment .
9. Remove the wheel blocks.
10. Check the parking brake operating and holding ability.
11. Repeat the procedure if necessary.
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