HLA BIG ARM BH600, Operator'S Manual

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TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Bucket and Swing Boom
cylinder malfunctioning
Low hydraulic fluid level Check and replenish hydraulic fluid.
Improper hose hookup
Check and correct hydraulic hose
connections.
Broken hydraulic line Check for leaks and replace line.
Jammed swing linkage Remove interference.
Bent piston rod Replace or repair cylinder.
Swing speed control completely
closed Open swing speed control valve (turn
counterclockwise).
Quick disconnect coupler(s) are
not connected or “Flow Check”
Check coupler connections.
Replace coupler(s) if necessary.
Hydraulic hose blockage
Check for evidence of damage to hoses
that would block flow of oil between
cylinders and control valve.
Hydraulic fluid leaking past
packing or seals
Replace packing or seals.
Cylinders operate in wrong
directions 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.
Hydraulic fluid foaming due to
improper hydraulic oil usage
Refer to Power Unit’s manual and replace
hydraulic oil using recommended hydraulic
oil.
Hydraulic oil heating
Dirty oil Drain and refill oil, replace filter.
Partially plugged inlet filter Clean filter element.
Oil too light in hot weather Use recommended oil.
Damaged oil lines Replace oil lines.
External hydraulic fluid leakage
Cylinder seals damaged Repair cylinder.
Broken oil lines Replace hose and check for leaks.
Loose hydraulic connection Tighten loose connections.
Hydraulic pump capacity
inadequate
Cold hydraulic fluid
Allow hydraulic fluid to warm up to
operating temperature.
Engine R.P.M. too slow Increase engine R.P.M.
Low hydraulic fluid supply
Refer to Power Unit’s manual for service
recommendations.
Hydraulic hose restriction
Check for evidence of restriction in
hydraulic hoses.