Hyster D174, Руководство по обслуживанию и ремонту

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Troubleshooting 1900 SRM 97
PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION
Low hydraulic pressure.
(Cont.)
Breather on hydraulic tank has a re-
striction. Replace hydraulic tank breather.
Seal for pump shaft is damaged. Replace pump shaft seal.
Pump drive has a problem. Repair pump drive.
Pump assembled wrong. Reassemble pump correctly.
Screen in hydraulic tank has a re-
striction. Clean hydraulic tank screen.
Pump has leaks, loose fit-
tings, or damaged seals. Housing capscrews are loose. Tighten housing capscrews to correct
torque.
Relief valve is damaged. Replace relief valve.
Pump housing is damaged. Replace hydraulic pump.
Worn seals and pump shaft. Replace worn seals and pump shaft.
Pump is too hot. Relief valve
is set wrong or is damaged. Flow regulator valve is damaged. Replace flow regulator valve.
Leak inside of a hydraulic cylinder. Repair hydraulic cylinder.
Worn or damaged hydraulic pump. Repair or replace hydraulic pump.
Air in the hydraulic system. Remove air from hydraulic system.
Low oil level in hydraulic tank. Fill hydraulic oil tank to correct level.
Wrong oil. Drain incorrect oil and fill hydraulic
tank to correct level with correct oil.
Supply hose is twisted or has a re-
striction. Remove twist or remove restriction.
Breather on hydraulic tank has a re-
striction. Replace hydraulic tank breather.
Pump drive has a problem. Repair pump drive.
Pump assembled wrong. Reassemble pump correctly.
Screen in hydraulic tank has a re-
striction. Clean hydraulic tank screen.
Replacement hydraulic hoses are
wrong size. Replace hydraulic hoses with correct
size hoses.
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