Parking Lock Cable: Service and Repair
PARK LOCKREMOVAL
1. Raise vehicle and remove propeller shaft.
2. Remove extension housing.
3. Slide sprag shaft out of extension housing and remove sprag and spring (Fig. 132).
4. Remove snap-ring and slide reaction plug and pin assembly out of housing.
5. If park rod requires service, it will be necessary to remove valve body.
CLEANING
Clean the park lock components in solvent and dry them with compressed air.
INSPECTION
Examine the park lock components in the housing. If replacement is necessary, remove the shaft with parallel jaw snap-ring pliers (Fig. 133) and remove the sprag and spring. Then remove the spring clip and reaction plug (Fig. 134). Compress the reaction plug spring clip only enough to remove and install it. Do not distort the clip during removal or installation.
Be sure a replacement sprag is installed so the sprag locking lug will face the park gear (Fig. 135). Also be sure the spring is correctly positioned as shown (Fig. 135). The sprag may not retract if the spring is improperly installed.
INSTALLATION
1. Inspect sprag shaft for scores and free movement in housing and sprag. Inspect sprag and control rod springs for distortion and loss of tension. replace worn, damaged parts as necessary.
2. Inspect square lug on sprag for broken edges. Check lugs on park gear for damage. Inspect knob on end of control rod for wear grooves, or being seized on rod. Replace rod if bent, if knob is worn/grooved, or it has seized on rod. Replace park gear if lugs are damaged. Replace the park lock rod if it is suspected that the rod is not the correct length.
3. Install reaction plug and pin assembly in housing and secure with new snap-ring (Fig. 132).
4. Position sprag and spring in housing and insert sprag shaft. Be sure square lug on sprag is toward park gear. Also be sure spring is positioned so it moves sprag away from gear.
5. Install extension housing.
6. Install propeller shaft and lower vehicle.
7. Check transmission fluid level. Add fluid if necessary.