FHM BACKHOE BH 8, Operation And Parts Manual

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Farmer-Helper BH 8 & 9 24 Revision 08 - 2017
9. 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,
Dipperstick and
Bucket Cylinders Not
operating properly
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