TRUCK SERVICE MANUAL
STEERING
OPERATION
There are four basic parts in the steering gear
DESCRIPTION
assembly. They are the actuating shaft, valve, piston
The power steering gear unit is a self-contained
and the output shaft and pinion gear assembly, Fig. 3.
assembly utilizing an integral power cylinder and control
valve in the gear housing. Figs. 1 and 2 are external
views of the steering gear.
Fig. 3 Sectional View of Steering Gear Assembly
Fig. 1 External View
Fig. 4 Sectional View of Steering Gear Assembly in
Applied Position
Actuating Shaft
The steering column is connected to the
actuating shaft. This shaft is threaded with an Acme type
thread. It is also retained in the bearing cap by locking
nuts and operates on a heavy-duty double row ball
bearing.
Actuating Valve
The actuating valve is threaded to accommodate
the actuating shaft. The valve moves on the threads of
the actuating shaft when the shaft is turned. The valve is
Fig. 2 External View
housed in the -piston and retained there by a large
indexed locking nut.
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