Hyster D174, Руководство по обслуживанию и ремонту

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1900 SRM 97 Troubleshooting
PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION
Hydraulic pump wears
faster than normal.
Dirt in the hydraulic system. Drain hydraulic tank and clean thor-
oughly.
Wrong hydraulic oil. Drain incorrect oil and fill hydraulic
tank to correct level with correct oil.
Relief valve is set wrong or is dam-
aged. Adjust relief valve setting. Replace
relief valve if it is damaged.
Cavitation from restriction in inlet
hose. Clear restriction from inlet hose.
Pump drive has a problem. Repair pump drive.
Pump drive is not correctly aligned. Realign pump drive.
Pump is not installed correctly in its
mount. Install pump drive correctly.
Pump is operating too hot. Check hydraulic oil level and fill to
correct level.
Air in the hydraulic system. Low oil level in hydraulic tank. Fill hydraulic oil tank to correct level.
Leak in inlet hose. Replace inlet hose.
Loose inlet fitting. Tighten inlet fitting.
Breather on hydraulic tank has a re-
striction. Replace hydraulic tank breather.
Supply hose is twisted or has a re-
striction. Remove twist or remove restriction.
Screen in hydraulic tank has a re-
striction. Clean hydraulic tank screen.
Pump seal is damaged. Replace pump seal.
Check valve in pump is damaged. Replace check valve.
Pump housing capscrews are loose. Tighten pump housing screws to cor-
rect torque.
Worn or damaged hydraulic pump. Repair or replace hydraulic pump.
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