If the movement is too much, the steer pivot housing
should be disassembled. Bushings, bearings and any
other worn components should be replaced.
Oscillation Bearing Clearance
Check the oscillation bearing clearance as follows:
During assembly, it is recommended that this
installing the drum into the yoke.
Put the machine on a hard level surface. Stop the
engine, and apply the secondary brake.
Steering Pivot Area
Dial Indicator position.
Disconnect the wire from the brake solenoid on top of
the brake/shift valve.
Attach the base of 8T5098 Dial Indicator to the front
face of the steer pivot bearing plate. Set the dial
indicator actuator against the front face of the oscillation
shaft. Set the dial indicator to zero.
Release the parking brake on the operator control
console. (Parking brake will stay engaged when the
solenoid wire is disconnected in step 2).
Start and run the engine at high idle.
Propel the machine in the forward direction against the
parking brake. Observe the Indicator reading.
Propel the machine in the reverse direction against the
parking brake. Observe the indicator reading sweep.
(Movement of the Indicator needle from the position in
the forward direction to the position of the needle in the
reverse direction. Total indicator travel is the indicator
When removing or adding shims behind the plate,
remove or add equal amounts at the top and
bottom of the plate.
Total movement should be .05 to .25 mm (.002 to .010
in) on a new assembly. The maximum reading for a
used assembly should be .51 mm (.020 in). If the
movement is too much, reduce clearance by removing
shims from behind the plate. If the clearance is too
small, add shims to increase the clearance.
Inadequate bearing lubrication may result if zero
endplay or a preload condition is present.
If the proper clearance cannot be obtained with the
removal or addition of shims, the oscillation assembly
should be disassembled. Bushings and any other worn
components should be replaced.