Vacuum Motor
Front Axle - 248FBI / VACUUM MOTORREMOVAL
1. Disconnect the vacuum and wiring connector from the shift housing.
2. Remove indicator switch.
3. Remove shift motor housing cover, gasket and shield from the housing (Fig. 27).
DISASSEMBLY
1. Remove E-clips from the shift motor housing and shaft. Remove shift motor and shift fork from the housing (Fig. 28).
2. Remove O-ring seal from the shift motor shaft.
3. Clean and inspect all components. Replaced any component that is excessively worn or damaged.
ASSEMBLY
1. Install a new O-ring seal on the shift motor shaft.
2. Insert shift motor shaft through the hole in the housing and shift fork. The shift fork offset should be toward the differential.
3. Install E-clips on the shift motor shaft and housing.
INSTALLATION
1. Install shift motor housing gasket.
2. Guide the shift fork onto the shift collar groove, while install the shift motor housing cover.
3. Install shift motor housing shield and tighten the bolts to 11 Nm (96 inch lbs.).
4. Add 148 ml (5 ounces) of API grade GL 5 hypoid gear lubricant to the shift motor housing. Add lubricant through indicator switch mounting hole.
5. Install indicator switch, electrical connector and vacuum harness.