Hydraulic Pump Fails to Deliver Sufficient Pressure.

SECTION III (Con't.)

3-23 Hydraulic Pump Fails to Deliver Sufficient Pressure.

Possible remedy

Probable cause

Defective high pressure relief valve---- Repair or replace high

pressure relief valve.

Fluid pressure gage defective ----------- Replace fluid pressure

gage

Compensator control defective ----------- Repair or replace

compensator control.

Hydraulic pump defective ---------------- Replace the pump.

Loss of prime --------------------------- Fill prime port on

pump.

3-24 Hydraulic Pump Fails to Deliver Sufficient Volume.

Possible remedy

Probable cause

Fluid volume control defective ---------- Repair fluid volume

control.

Air in the hydraulic system ------------- Bleed air from the

system.

Engine speed too low-------------------- Check engine with hand

speed indicator, Re-

place tachometer if

defective.

Fluid flow indicator defective ---------- Replace or repair

fluid flow indicator.

High pressure filter clogged ------------ Replace high pressure

filter.

Fluid bypass valve leaking -------------- valve fluid bypass

3-25

Hydraulic System Pressure Too High.

Probable cause

Possible remedy

High pressure filter clogged ------------ Replace high pressure

High pressure relief valve defective---- Repair or replace high

pressure relief valve.

Compensator control defective ----------- Repair or replace

compensator control.

Fluid pressure gage defective ----------- Repair or replace

fluid pressure gage.

3-26

Hydraulic Fluid Temperature Too High.

Probable cause

Possible remedy

Fluid temperature gage defective -------- Replace fluid temper-

ature gage.

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