Spicer Manual Locking Hub

Fig. 8 Exploded view of Spicer manual locking hub:

Description
As shown in Fig. 8, the splines on the inside diameter of the axle shaft sleeve and ring assembly mesh with the axle shaft splines. The assembly is retained on the axle shaft with a snap ring. The splines on the outside diameter of the inner clutch ring assembly mesh with the wheel hub splines. Therefore, when the actuator knob is turned towards the ``L'' position, the actuating cam body is forced outward towards the hub end, allowing the inner clutch to be forced under spring tension towards the axle shaft sleeve and ring assembly until the inner clutch assembly teeth are engaged in the axle shaft sleeve and ring assembly teeth, locking the axle and hub.



Operation
When the transfer case is shifted into the position for driving the front axle, turn the actuating knob so that it is aligned with the letter L. If the clutch teeth do not engage with the knob turned to this position, the clutch teeth are butted and a slight movement of the wheel in either direction will complete the lock. The front axle will now drive the wheel.
When the transfer case is to be shifted into the position for driving the rear axle only, turn the actuating knob so that it is aligned with the letter F. This will disengage the clutch teeth and thus unlock the wheel hub from the axle shaft. The wheel will now turn free on the axle. Be certain that the transfer case is shifted into two wheel drive position before disengaging the Hub-Lock.

Fig. 8 Exploded view of Spicer manual locking hub:

Removal
1. Position actuator knob in ``LOCK,'' then raise and support vehicle. Rotate tire to ensure engagement of hub lock.
2. Remove retaining plate attaching bolts, then the retaining plate, actuating knob and O-rings.
3. Remove internal snap ring, outer clutch retaining ring, actuating cam body, outer clutch gear and pressure spring, Fig. 8.
4. Remove axle shaft snap ring, then the inner clutch ring.
5. Remove spring retainer plate, if equipped.



Installation
1. Install spring retainer plate, if equipped, over spindle nuts and against wheel bearing outer cup. Ensure flanged side of plate faces toward wheel bearing.
2. Install inner clutch ring onto axle shaft, press ring inward, then install snap ring.
3. Install pressure spring with larger side facing inward.
4. Install outer clutch gear, actuating cam body, outer clutch retaining ring and the internal snap ring. Ensure actuating cams face outward.
5. Install O-ring, actuating knob, actuating knob O-ring and the retaining plate.
6. Install retaining plate attaching bolts and torque to 38 inch lbs.