LS tractor 30139708, Руководство оператора

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TROUBLE SHOOTING
This Trouble shooting chart is provided for reference to possible backhoe operational problems.
Determine the problem that best describes the operational problem being experienced and eliminate the
possible causes as listed by following the correction procedures.
Problem Possible cause Correction
Swing, boom,
dipper stick and bucket
cylinders
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
Low system pressure
supplied from hydraulic
pump.
Check system pressure.
Repair or replace pump.
Control valve linkage
broken.
Inspect. Repair as required.
Quick disconnect
coupler(s) are not fully
connected or "Flow
check"
Check coupler connections.
Replace coupler(s) if necessary.
Hydraulic hose or tube
line blockage.
Check for evidence of damage to hoses or
Tube lines 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.
Aeration of hydraulic
fluid(Generally indicated by
foamy appearance of fluid).
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.