Laski ATR 90, Operating Instructions Manual, Page: 25 / 29

TRENCHER
ATR 90
25
Every 500 hours
- Check out all hydraulic elements for condition, function and tightness.
Failures and Troubleshooting
Failure Cause Remedy
Chain cannot be
set in motion Hydraulic circuit broken Check all hydraulic lines
and elements
Faulty hydromotor Change
Damaged drive shaft Change SERV
ICE
Insufficient chain
performance Hydraulic oil
overheated Insufficient cooling – let
the machine run idle and
in this way oil cool down
Faulty hydromotor Change
Chain creeping on
drive wheel teeth Chain worn or too slack Change or retightening
Chain does not
trench Chain tips worn Change of tips or change
of entire chain SERV
ICE
Too high carrier speed Reduce carrier speed
Note: The note "SERVICE" in the "Remedy" column means that this operation
should be done by an authorised service only.