3 Machine will not turn when the Priority valve not operating Check if the priority valve
steering wheel turned (continued). correctly is sticking, rectify as
required.
Check the load sense line
from the steer unit to the
priority valve for signs of
leaking or poor
connection.
Steer mode valve not operating Check if spools sticking,
correctly (4WS Machines only) rectify as required
Check if solenoids
operating, replace
solenoids as required
Mechanical failure Check for damaged axle
components, such as
rams, trackrods, linkages
etc.
Steer column splined shaft not fully Check shaft
engaged in steer valve. engagement.
Power track rod failure Check power track rod for
signs of damge, leaks etc.
4 Steering fails to respond to Selector switch faulty Check selector switch,
selected mode (4WS Machines only) replace as required
Proximity switches not operating Check setting of
correctly Proximity switches, reset
or replace switches as
required.
Steer mode valve not operating Check if spools sticking,
correctly rectify as required
Check if solenoids
operating, replace
solenoids as required.
Leaks in the relevant hoses or Check hoses and
component connections connections for leaks
Electrical failure Check relevant electrical
connectors, if problem
still persists, do a wiring
continuity check on
relevant circuits.
10 - 3
Fault Probable Cause Action
Section H Steering
9803/3280
Section H
10 - 3
Issue 1
Fault Finding
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