7-13
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2
2
3
2
2
7
8
8
9
10
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12
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16
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18
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TROUBLESHOOTING
Only hydraulic related items are listed.
Symptom Possible cause Action
the steering wheel cannot
be rotated
• damaged lines replace
• The shaft from the steering wheel to the
power steering is incorrectly installed or
damaged
inspect and adjust or
replace
the steering wheel is heavy
• Tyre pressure is low Adjust the tyre pressure
• the oil pressure does not rise
Inspect and adjust the pres-
sure relief valve
• the high and low pressure lines are con-
nected in reverse
inspect and adjust
the oil pressure does not
rise
• the high and low pressure lines are con-
nected in reverse
inspect and adjust
• Pressure relief valve faulty or not closed inspect and correct
• oil pump function defective
inspect and adjust or
replace
• priority solenoid valve broken overhaul or replace
• hydraulic fluid level low top up
steering wheel does not
return to centre
properly
• Tyre pressure is low Adjust the tyre pressure
• the orbitrol shuttle does not move easily
inspect and adjust or
replace the orbitrol
• the rear axle does not move smoothly add lubricant or adjust
The steering wheel pulls to
one side when released
• the orbitrol shuttle does not move easily
inspect and adjust or
replace the orbitrol
• The steering valve drive shaft is dam-
aged
replace the orbitrol
• lines blocked (crushed or clogged)
Inspect and correct or
replace
play is excessive and the
vehicle wobbles
• oil moving in the orbitrol replace the orbitrol
• the orbitrol shuttle does not move easily
inspect and adjust or
replace the orbitrol
• air aspirated from the lines
inspect and adjust or
replace
• the steering shaft is defective inspect and adjust
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