STEERING/HYDRAULIC SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
Table 1. Steering System Troubleshooting Procedures - Continued.
TEST OR INSPECTION
Machine Turns Slightly
When Steering Wheel Is
Do NOT remove hydraulic tank filler cap or disconnect or remove any hydrau-
lic system line or fitting unless hydraulic system pressure has been relieved.
Hydraulic system pressure can be over 2,500 psi (17,237 kPa), even with engine
and pump OFF. To relieve pressure, lower all hydraulic attachments to the
ground and shut down engine. Move control levers through all operating posi-
tions, then SLOWLY loosen hydraulic tank filler cap. After maintenance,
tighten all connections before applying pressure. Escaping hydraulic fluid under
pressure can penetrate the skin, causing injury or death.
At operating temperature, hydraulic oil is hot. Allow hydraulic oil to cool before
disconnecting any hydraulics. Failure to do so may cause injury.
Hydraulic oil is slippery and can cause falls. To avoid injury, wipe up spilled oil
Check valve spool in steering control
1. If valve spool requires adjustment,
valve (WP 0312 00).
adjust (WP 0312 00).
2. If valve spool is damaged or defective,
replace (WP 0312 00).
3. If valve is OK, go to Test 2.
Check follow-up cylinder relief valve
If relief valves or check valves leak or are
and check valves (WP 0308 00 and
damaged, replace (WP 0309 00 and WP
WP 0309 00).