D 41 42
Malfunction Reason Remedy
Traction does not
work
Travel drive fuse defective
Replace (fuse strip on the oper-
ating panel)
Power supply interrupted
Check potentiometer, cables,
connectors; replace if necessary
Travel drive monitoring
(type-specific) defective
Replace
Electro-hydraulic servo unit
of the pump defective
Replace the servo unit
Insufficient supply pressure
Check and adjust if necessary
Check the suction filter; replace
the supply pump and the filter if
necessary
Drive shaft of hydraulic
pumps or engines broken
Replace pump or engine
Irregular engine
speed,
engine stop function
does not work
Fuel level too low
Check the fuel level; refill fuel if
necessary
Fuse "engine speed control"
defective
Replace (fuse strip on the oper-
ating panel)
Electrical power defect
(line break or short circuit)
Check potentiometer, cables,
connectors; replace if necessary
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