Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Wheel Hub (Locking): Service and Repair
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.
