DESCRIPTION
Note. Hombre 4WD model does not have locking front hubs. Front drive is controlled by front differential.
Hubs can be engaged (locked) by shifting transfer case from 2H to 4H while driving at less than 60 MPH without pressing clutch pedal. Hubs are engaged using a vacuum controlled servo mounted on front axle housing. Vehicle speed must be reduced and clutch pedal depressed when shifting from 4H to 4L.
Hubs are engaged (locked) when transfer case is shifted into 4WD (vehicle stopped), then driven at least 3 feet in forward direction. Hubs will automatically lock. To unlock automatic hubs, stop vehicle, shift into 2H, and then drive at least 3 feet in reverse. Hubs will automatically unlock.
IDENTIFICATION
Automatic locking hubs do not have a hub cover mounted control knob. Automatic hubs equipped with shift-on-the-fly system use a vacuum servo and Vacuum Switching Valve (VSV) assembly located on left side of front axle housing. (Scheme 1)
Scheme 1
Scheme 2
- Place transfer case lever in 2H position. Move vehicle back and forth about 3 feet or more. Raise and support vehicle. Remove wheel and brake caliper. Wire caliper aside. Remove 6 bolts and locking hub cover. (Scheme 2)
- Remove snap ring and shim. Remove hub flange. Remove lock screw and washer. Remove hub nut with Wrench (J-36827). Remove outer bearing with hub and rotor assembly. Mark hub and rotor relation if they are to be separated.