Page
D - 23
Document 57.0008.7200 - 05/2007
Handler with telescopic boom
GTH-3512
MAINTENANCE
SERVICE INTERVAL
Running-in ____________________________
None
Ordinary ___________________
When necessary
D-3.17
RE-SEQUENCING THE
TELESCOPIC BOOM
If, during normal operation, a change in the boom
extended lengths of 150 mm or more is noticed when
the boom is retracted, proceed as follows:
1
Fully retract the telescope cylinder and hold the
system over relief (approx. 15 seconds); the boom
sections should become equal.
If after performing this procedure the boom still remains
out of sequence, proceed with the steps below.
2
Move the boom to the zero position, fully retract
the boom and hold the retract system over relief
for approx. 20 seconds.
3
Raise the boom to approx. 60
°
and operate the
retract function over relief for approx. 20 seconds.
4
Lower the fully retracted boom to the lowest angle
possible without striking the ground and hold the
retract system over relief for approx. 20 seconds.
If, despite these procedures, the boom does not return
in sequence, raise the boom to approx. 60
°
, fully extend
and retract it to full stroke and hold the system over
relief (approx. 20 seconds) in each direction.
By following these procedures the boom re-sequencing
should be correct.
Summary of Contents for GTH-3512
Page 2: ...Courtesy of Crane Market...
