PROBLEM

Inadequate lifting capacity

Aeration of hydraulic fluid

(generally indicated by foamy appearance of fluid).

System relief valve squeals.

POSSIBLE CAUSE

Engine RPM too SIOW

Excessive load - material weight exceeds specified loader capacity.

Relief valve setting below specifications.

Lift cylinder piston assembly leakage.

Control valve leaking internally.

Hydraulic pump defective.

Lower hydraulic fluid level.

Air leaking into suction side of hydraulic pump.

Hydraulic fluid foaming due to improper hydraulic oil usage.

Cold hydraulic fluid.

Excessive load in bucket. Weight exceeds specified loader capacity.

Relief valve setting below specifications.

Hydraulic hose, tubeline or quick disconnect coupler restriction.

TROUBLE SHOOTING

CORRECTlON

Increase engine RPM.

Reduce load.

Check relief valve setting as described under relief valve test.

Check cylinders for leakage as described in service section under cylinder leakage tests.

Replace control valve and recheck operation.

Refer to “hydraulic pump capacity inadequate.”

Check and refill hydraulic system to proper level.

Check for loose or defective

connections between reservoir and hydraulic

pump-

Refer to tractor owner’s

manual and replace

hydraulic oil using recommended hydraulic oil.

Allow hydraulic fluid to warm up to operating temperature.

Reduce loads.

Check relief valve setting as described under relief valve test.

Check for evidence of restriction in hydraulic oil flow. Repair or replace defective component(s).

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Honda Power Equipment FL6555 manual Problem

FL6555 specifications

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