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

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TROUBLE SHOOTING GUIDE
PROBLEM POSSIBLE CAUSE POSSIBLE REMEDY
Slow or erratic movement of Cylinder
(Noisy operation of cylinder). • Check & replenish hydraulic fluid.
• Allow hydraulic system to warm up
to operating temperature.
• Check oil number & viscosity, Refill
correct hydraulic oil.
• Increase engine speed to obtain
satisfactory backhoe operation.
• Reduce material load (Digging load).
• Check control valve linkage & repair if
worn/defective.
• Refer to “aeration of Hydraulic Fluid”.
• Check coupler connections. Repair or
replace.
• Check hoses & tube lines for evidence
of restriction.
• Check cylinders for leakage. Repair as
needed.
• Check & reset relief valve. Setting as
needed.
• Replace control valve & recheck
operation.
• Low hydraulic fluid level.
• Cold hydraulic fluid.
• Hydraulic oil viscosity too heavy or
incorrect oil.
• Engine RPM too slow (hydraulic pump
RPM too slow).
• Excessive weight in bucket. Material
weight exceeds maximum specified
backhoe capacity.
• Control valve linkage binding/defective.
• Aeration of hydraulic fluid.
• Quick disconnect coupler restriction or
coupler “Flow checks”.
• Hydraulic hose or tube line restriction
(hoses/tube line) kinked or pinched.
• Boom, Dipperstick or Bucket cylinder
piston assembly leakage.
• Relief valve erratic or set below
specifications.
• Control valve leaking internally.
(hypassing fluid within valve).
Aeration of Hydraulic Fluid (Generally
indicated by foamy appearance of fluid). • Check & refill hydraulic system to
proper level.
• Check for loose or defective
connections between hydraulic oil
using recommended hydraulic oil.
• Refer to Tractor Operator’s Manual
& replace hydraulic oil using
recommended hydraulic oil. • Low hydraulic fluid level.
• Air leaking into suction side of
hydraulic pump.
• Hydraulic fluid foaming due to
improper hydraulic oil usage.
System relief valve squeals. • Allow hydraulic fluid to warm up to
operating temperature.
• Check oil number & viscosity, Refill
correct hydraulic oil.
• Reduce load.
• Check & reset valve setting as needed.
• Check for evidence of restriction in
hydraulic oil flow. Repair or replace
defective components. • Cold Hydraulic Fluid.
• Hydraulic Oil viscosity too heavy or
incorrect oil.
• Excessive load in bucket. Loading
exceeds specified backhoe capacity.
• Relief valve setting below specifications.
• Hydraulic hose, tube line or quick
disconnect coupler restriction.