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Controls and Operating
Steering
The steering wheel position can be adjusted as required for the most convenient
operating position. To adjust, pull out adjustment lock and tilt steering wheel up
or down as desired; release lever to lock adjustment.
The steering system provides full-time hydraulic power with a continuous
running pump and a pressurized accumulator. The accumulator helps maintain a
constant flow of hydraulic power to operate the steering cylinders.
To steer the front wheels, rotate the steering wheel in the desired direction to the
required radius of turn. The front wheels will turn only as the steering wheel is
turned and at a rate of turning directly proportional to steering wheel speed. The
front wheels will stop and hold position when the steering wheel is stopped. To
return the front wheels to the straight ahead position or to the opposite direction,
turn the steering wheel in the opposite direction.
In the event of loss of steering pump output pressure, a fully
pressurized accumulator provides a maximum of two lock to lock
turns of the front wheels. A red warning light on the instrument panel
illuminates and a buzzer sounds when steering pressure falls below
83 bar (1200 lbf/in²). If this warning light illuminates, indicating a loss
of steering power, the machine must be stopped immediately and no
further operation attempted until the fault is corrected.
The accumulator slowly bleeds down after engine shut-off to prevent
accidental steering. However, accumulator pressure should be
dissipated after engine shut-off by turning the steering wheel in both
directions to avoid accidental steering during bleed down.
Improper steering control unit repair or hose connections can cause
sudden and forceful steering wheel movement when engine is started.
Keep hands off steering wheel when starting engine.
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