3
Machine will not turn when the
Priority valve not operating
Check if the priority valve
steering wheel turned (continued).
correctly
is st ic k ing , rec t if y as
required.
Check the load sense line
from the steer unit to the
priority valve for signs of
leak ing o r p o o r
connection.
Steer mode valve not operating
Check if spools sticking,
correctly (4WS Machines only)
rectify as required
Chec k if so leno id s
o p erat ing , rep lac e
solenoids as required
Mechanical failure
Check for damaged axle
c o m p o nent s, suc h 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
Chec k if so leno id s
o p erat ing , rep lac e
solenoids as required.
Leaks in the relevant hoses or
Check hoses and
component connections
connections for leaks
Electrical failure
Check relevant electrical
c onnec t ors, if p rob lem
still persists, do a wiring
c o nt inuit y c hec k o n
relevant circuits.
10 - 3
Fault
Probable Cause
Action
Section H
9803/3280
Section H
10 - 3
Issue 1
Fault Finding
