TM 5-3810-306-34
SYMPTOM INDEX
Malfunction
Troubleshooting
Procedures
Page
HYDRAULIC SYSTEM (CONTD)
Slow hoist operation down............................................................................................................
Slow hoist operation up ................................................................................................................
Erratic hoist operation up .............................................................................................................
Leaking hoist motor control valve seals .......................................................................................
Unable to move hoist motor control valve spool
in or out .....................................................................................................................................
Poor hydraulic system performance or failure..............................................................................
External hoist motor leakage ........................................................................................................
Leakage at hoist motor fittings .....................................................................................................
Loss of hoist speed under load ....................................................................................................
Poor hoist speed control...............................................................................................................
Hoist motor fails to start turning....................................................................................................
Hoist motor shaft play...................................................................................................................
Excessive hoist motor noise .........................................................................................................
Boom swing operation erratic in either direction ..........................................................................
Boom swing operation erratic in one direction only......................................................................
Boom will not swing in either direction..........................................................................................
Swing operation slow in either direction .......................................................................................
Swing brake system will not operate ............................................................................................
Boom swings slowly .....................................................................................................................
Swing motor noisy ........................................................................................................................
CAB HEATER
Cab Heater Starts After Switching On Several Times..................................................................
No Cab Heater Ignition Voltage....................................................................................................
Cab Heater Motor Does Not Start ................................................................................................
Cab Heater Combustion Does Not Start ......................................................................................
Cab Heater Combustion Stops.....................................................................................................
Cab Heater Combustion Produces Black Smoke ........................................................................
Cab Heater Dosing Pump Ticking Not Audible ............................................................................
LOAD MOMENT INDICATOR SYSTEM
Lever lockout system activated (crane not in overload or
two-block condition) ..................................................................................................................
No display (lever lockout system activated) .................................................................................
Malfunction of anti-two-block system ...........................................................................................
Length reading incorrect...............................................................................................................
Load reading incorrect..................................................................................................................
Error in data or no data transfer between central processing
unit and console (error codes E91, E92, E93 or E94)...............................................................
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