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TROUBLESHOOTING (cont.)
PROBLEM
POSSIBLE CAUSE
SOLUTION
Drum operates 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.
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
Motor seals damaged
Repair motor.
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.