Hydraulic System

Symptom Problem Solution

No Loader, Hitch or Steering Hydraulics

Low oil level

Add oil to correct level.

Suction screen plugged

Remove and clean screen in hydraulic reservoir.

Pump Problem

Remove hydraulic filter and inspect. If filter contains excessive amounts of metal material see your authorized dealer.

Obstruction in oil lines or valves

Inspect for pinched lines or stuck valve spools.

Low Hydraulic Power

Hydraulic oil aerated

Incorrect oil; drain and refill. Suction hose has air leak; inspect and tighten.

Low oil level

Check oil levels.

Slow Hydraulic Functions

Low oil level

Add oil to correct level.

Hydraulic oil aerated

Incorrect oil; drain and refill. Suction hose has air leak; inspect and tighten.

Hose or line leakage

Inspect and tighten fittings.

Loader or Hitch Operates Slowly in One Function

Control lever and linkage out of adjustment

Inspect lever and linkage. See your authorized dealer.

Circuit relief valve or plug leakage in control valve

Remove, inspect and repair sealing rings on relief valve or plug. See your authorized dealer.

Hydraulic cylinder leakage

Inspect hydraulic cylinders. See your authorized dealer.

Bent or restricted line or hose

Inspect hydraulic lines and hoses. See your authorized dealer.

TX,9025,BG628 -19-02MAR07-1/3


Symptom Problem Solution

No Loader or Hitch Power in One Function

Control lever and linkage out of adjustment

Inspect lever and linkage. See your authorized dealer.

Bent or restricted line or hose

Inspect hydraulic lines and hoses. See your authorized dealer.

Slow Loader and Hitch Hydraulics (Low Pump Output)

Hydraulic oil aerated

Incorrect oil; drain and refill. Suction hose has air leak; inspect and tighten.

Low Hydraulic Power (Low Hydraulic Pressure)

Low oil level (no aeration of oil)

Add oil to correct level.

Hydraulic oil aerated

Incorrect oil; drain and refill. Suction hose has air leak; inspect and tighten.

Hydraulic Function Makes "Chattering" Noise

Low oil level

Add oil to correct level.

Hydraulic oil aerated

Incorrect oil; drain and refill. Suction hose has air leak; inspect and tighten.

Hydraulic Oil Overheats

Excessive load

Reduce load.

Operator holding hydraulic system over relief

Return levers to neutral when not in use.

Oil level too low in reservoir

Check level and add oil. Use recommended oil.

Using low viscosity oil in hot weather

Use recommended oil.

Hydraulic cooling system restricted

Clean radiator and cooler.

Foaming Oil

Oil level too low or too high

Check oil level. Adjust to full on sight gauge.

Incorrect type of oil

Use recommended oil.

Oil maintenance not performed

Perform correct maintenance.

TX,9025,BG628 -19-02MAR07-2/3


Symptom Problem Solution

Excessive Pump Noise

Low oil level

Add oil to correct level.

Hydraulic filter bypass valve chattering

Replace filter. Inspect, clean, and repair.

Worn transmission hydraulic pump drive

Inspect and repair. See your authorized dealer.

Oil lines in contact with operator's station (worn transmission rubber isolators)

Inspect, repair or replace. See your authorized dealer.

Pump attaching hardware loose

Tighten to specification. See your authorized dealer.

No Response when Steering Wheel Is Turned

Low oil level

Check reservoir oil level.

Machine Turns in Opposite Direction

Steering cylinder lines not connected to proper ports

Connect steering cylinder lines to opposite ports. See your authorized dealer.

TX,9025,BG628 -19-02MAR07-3/3