Troubleshooting
113
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 per-
formed 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 13 and the safety rules for operation (page 57).
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 measures.
Troubleshooting: Before operation
MALFUNCTION
POSSIBLE CAUSE
REPAIR
Start-up
No function available when the star-
ter switch is turned to the RUN posi-
tion
Main fuse at battery defective
Replace the main fuse (page 106).
Indicator lights do not come on as
expected when the starter switch is
turned to the RUN position
Defective fuse
Replace the fuses (page 105).
Starter does not turn when the star-
ter switch is turned to the START
position
Battery depleted
Charge the battery (page 135).
Jump-starting the excavator
(page 101).
Engine stop knob pulled
Push the engine stop knob
(page 25).
Control lever lock not raised
Raise the control lever lock.
Engine does not start when the
starter switch is turned to the
START position, but starter turns
Air in the fuel system
Check the fuel system for leaks and
bleed it (page 104).
Water in the fuel system
Check the water separator for water
content, drain water if necessary
(page 130).
