Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Wheel Hub (Locking): Service and Repair
Warner Manual Locking Hub
Description
Turning the locking hub clutch control to the ``L'' or ``4'' position connects the wheel hubs to the axle shafts. Therefore, when the transfer case is
driving the front axle and the locking hubs are in the ``L'' or ``4'' position, the wheels are driven by the axle shafts. When the transfer case is not driving
the front axle, the locking hub clutch controls are turned to the ``F'' or ``2'' position to disconnect the wheel hubs from the axle shafts. The wheels now
rotate freely, but the axle shafts remain stationary.
On any vehicle equipped with manually operated locking hubs, extreme care must be taken to ensure locking hub dials are fully engaged or
disengaged, to prevent possible damage to the locking hubs. If the locking hubs are not properly maintained, full engagement of the control dials may
become impossible due to excessive dirt and dust. Any time the vehicle is driven through water deep enough to cover the hubs, the locking hubs should
be removed and cleaned, then lubricated thoroughly.
These hubs are serviced as an assembly or subassembly only (hub body or hub clutch assembly only). Do not attempt to disassemble these units. If an
entire hub or subassembly is defective, replace the entire assembly or subassembly. The hubs may be removed for cleaning and inspection purposes and
for periodic lubrication only.
