BE Ag & Industrial BE-BK Series, Руководство по эксплуатации и запасным частям

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TROUBLE SHOOTING GUIDE
PROBLEM POSSIBLE CAUSE POSSIBLE REMEDY
Swing, Boom, Dipperstick & Bucket
Cylinders not operating properly. • Check & replenish hydraulic fluid.
• Check & correct hydraulic hose
connections.
• Check for damage (kinked) hoses, etc.
• Check system pressure. Repair or
replace relief valve. Refer to the
Tractor Operator’s Manual.
• Check system pressure. Repair or
replace pump.
• Inspect. Replace as required.
• Check coupler connections. Replace
coupler(s) if necessary.
• Check for evidence of damage to
hoses or tube lines that would block
flow of oil between cylinders & control
valve.
• Check cylinders for internal leakage as
described under cylinder leakage tests.
• Inspect for blockage. Disassemble
valve if necessary.
• Low hydraulic fluid level.
• Hydraulic hoses connected improperly.
• Hydraulic hoses to/from control valve
are blocked.
• Backhoe control valve or tractor main
relief valve stuck open.
• Low system pressure supplied from
hydraulic pump.
• Control valve linkage broken.
• Quick disconnect coupler(s) are not
fully connected or “Flow Check”
• Hydraulic hose or tube line blockage.
• Cylinder piston assembly defective
(not sealing)
• Control valve blockage
Cylinders operate in wrong direction
relative to control valve lever position. • Correct hydraulic hose connections. • Hydraulic hoses connected incorrectly.
Inadequate lifting capacity. • Increase engine RPM.
• Reduce Load.
• Check & reset relief valve setting as
needed.
• Check cylinders for leakage. Repair as
needed.
• Replace control valve & recheck
operation.
• Refer to “Hydraulic Pump Capacity
Inadequate”.
• Engine RPM too slow
• Excessive load. Material loading
exceeds specified backhoe capacity.
• Relief valve setting below
specifications.
• Bucket, Boom & Dipperstick Cylinder
Piston Assembly leakage.
• Control valve leaking internally.
• Hydraulic Pump defective.
The 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.