TROUBLE SHOOTING
This Trouble Shooting Chart is provided for reference to possible backhoe operational problems.
PROBLEM
POSSIBLE CAUSE
CORRECTION
Low hydraulic fluid level. Check and replenish hydraulic fluid.
Hydraulic hoses
connected improperly.
Check and correct hydraulic hose connections.
Hydraulic hoses to/from
control valve blocked
Check for damage(kinked) hoses, etc.
Backhoe control valve or
tractor main relief valve
stuck open.
Check system pressure. Repair or replace relief
valve. Refer to the Tractor Operator's Manual
Check system pressure.
Repair or replace pump.
Control valve linkage
broken.
Inspect. Repair as required.
Check coupler connections.
Replace coupler(s) if necessary.
Hydraulic hose or
tubeline blockage.
Check for evidence of damage to hoses or
tubelines that would block flow of oil between
cylinders and control valve.
Cylinder piston assembly
defective(not sealing)
Check cylinders for internal leakage as described
in service section under cylinder leakage tests.
control valve blockage.
Inspect for blockage. Disassemble valve if
necessary.
Cylinders operate in wrong
direction relative to control
valve lever position.
Hydraulic hoses
connected incorrectly.
Correct hydraulic hose connections.
Low hydraulic fluid level. Check and refill hydraulic system to proper level.
Air leaking into suction
side of hydraulic pump.
Check for loose or defective connections
between reservoir and hydraulic pump.
Hydraulic fluid foaming
due to improper hydraulic
oil usage.
Refer to Tractor Operator's Manual and replace
hydraulic oil using recommended hydraulic oil.
Determine the problem that best describes the operational problem being experienced and
eliminate the possible causes as listed by following the correction procedures.
Swing, Boom,
Dipperstick and Bucket
Cylinders
Low system pressure
supplied from hydraulic
pump.
Quick disconnect
coupler(s) are not fully
connected or "Flow
Check"
Aeration of Hydraulic
Fluid(Generally indicated
by foamy apperance of
fluid).
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