Hydraulic System
Problem
Possible Cause
Remedy
Lift/Tilt controls
fail to respond.
Hydraulic oil viscosity is too
heavy.
Hydraulic oil level is low.
Solenoid valve(s)
malfunctioning.
Restraint bar or seat switch
malfunction.
Allow longer warm-up or
replace with proper viscosity
oil.
Check oil level in reservoir. If
oil is low, check for an
external leak. Repair and add
oil.
Check electrical connections
to lift solenoid and repair.
Check switches.
Auxiliary
hydraulics do not
function.
Restraint bar is raised.
Lock solenoid malfunctioning
Restraint bar switch
malfunctioning.
Lower the restraint bar.
Check electrical connections
to lock solenoid and repair
connections as needed. If
lock solenoid is still not
functioning properly, contact
your dealer.
Check electrical connections
to restraint bar switch and
repair connections as
needed. If switch is still not
functioning properly, contact
your dealer.
Hydraulic cylinder
action is slow for
lift and/or tilt
functions.
Low engine speed.
Hydraulic oil viscosity is too
heavy.
Control linkage is restricted.
Hydraulic oil leaking past
cylinder piston seals.
Worn gear pump.
Solenoid valve(s) could be
malfunctioning.
Relief valve in control valve
not functioning correctly.
(Squealing noise should be
evident while operating.)
Operate engine at higher
speed.
Allow longer warm-up or
replace existing oil with
proper viscosity oil.
Check for control linkage
restriction and adjust.
Contact your dealer.
Contact your dealer.
Check electrical connections
to lift solenoid and repair
connections as needed. If lift
solenoid valve is still not
functioning properly, contact
your dealer.
Contact your dealer.
908268/BP0904
62
Summary of Contents for SL3635
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Page 18: ...Notes 15 908268 BP0904...
Page 34: ...Notes 31 908268 BP0904...
Page 58: ...Notes 55 908268 BP0904...
Page 69: ...Maintenance Log Date Hours Service Procedure 908268 BP0904 66...
Page 70: ...Maintenance Log Date Hours Service Procedure 67 908268 BP0904...