Troubleshooting
76
TROUBLESHOOTING
The troubleshooting section includes only malfunctions and incorrect operations which must be remedied by
the operator. Any other malfunctions may only be eliminated by trained personnel. The troubleshooting must be
performed with the aid of the troubleshooting table. In order to locate a malfunction, first look in the
MALFUNCTION column for the corresponding excavator malfunction. In the POSSIBLE CAUSE column you
will find the possible causes for the malfunction. The REPAIR column indicates the required remedial measure.
If the fault can not be remedied by the measure indicated in the REPAIR column, consult trained personnel.
Safety rules for troubleshooting
Adhere to the general safety rules (page 12) and the safety rules for operation (page 45).
The operator is not allowed to open the electrical and hydraulic system. These services are reserved for trained
personnel.
During troubleshooting, the safety on and around the excavator must always be ensured.
If troubleshooting of the excavator calls for the bucket being raised, the operator may not stand in the area of
the front attachments unless the front attachments are secured against inadvertent lowering by suitable meas-
ures.
Troubleshooting: Pre-operational services
Malfunction Possible
cause
Repair
Start-up
No function available when the
starter switch is turned to the RUN
position
Main fuse defective
Replace the main fuse (page 73).
Indicator lights do not come on as
expected when the starter switch is
turned to the RUN position
Defective fuse
Replace the fuses (page 73).
Starter does not turn when the
starter switch is turned to the
START position
Battery depleted
Charge the battery (page 93).
Jump-start the excavator
(page 71).
Air in the fuel system
Check the fuel system for leaks
and bleed it (page 73).
Engine does not start when the
starter switch is turned to the
START position, but starter turns
Water in the fuel system
Check the water separator for
water content, drain if necessary
(page 50).