93
Operating Manual Crawler Excavator TC37
Trouble-shooting
8
8
Trouble-shooting
Operating problems are often the result of incorrect
handling of the machine, the use of unsuitable
materials or irregular maintenance.
The following Table presents a summary of a range of
problems and their probable causes.
If a problem can only be eliminated through repair,
then your responsible Service Agent must be called
in.
8.1
Engine
All faults in the diesel engine must be examined as
described in their specific Engine Operating
Instructions.
During the warranty period, malfunctions must be
dealt with by your responsible Service Agent or a
specialist workshop.
8.2
Table of faults
Possible cause
Remedy
Machine fails to drive
Engine damaged.
Check engine.
Too little hydraulic oil in tank.
Top up hydraulic oil to recommended mark.
Hydraulic pump has failed.
Have pump checked for mechanical damage by specialist.
Replace hydraulic pump completely.
Clutch or pump drive damaged.
Replace pump drive.
Determine cause of damage.
Main relief valve damaged or wrongly adjusted.
Replace main relief valve.
Insufficient driving performance
Insufficient engine power.
Check diesel engine.
Main relief valves damaged or wrongly adjusted.
Check pressure, re-adjust valves, replace if necessary.
Oil loss in rotary joint.
Re-seal rotary joint.
Crawler chains tensioned too tightly.
Check crawler-chain tension and reduce if required.
Excavator installation not working
Exit barrier lifted and/or shutoff valve damaged.
Lower exit barrier and/or check shutoff valve; replace or repair if
required.
Oil supply to hydraulic pump interrupted.
Check lines.
Hydraulic pump has failed.
Have hydraulic pump checked by specialist and replace if necessary.
Main relief valves have failed or are wrongly
adjusted.
Check main relief valve and replace if necessary.
Decrease in machine's performance
Insufficient engine power.
Check diesel engine.
Insufficient hydraulic oil level.
Top up hydraulic oil to the recommended mark.
Pump is sucking in air.
Re-tighten hose connections. Replace O-ring or seals.
Insufficient operating pressure.
Re-adjust main relief valves or replace if required.
Machine working too slowly and hydraulic oil is becoming too hot
Tab. 22 Table of faults
