Maintenance
Safety, Operation and Maintenance Manual - Aug 2012
5-43
SY115C9/135C/155H Crawler Hydraulic Excavator
If the track tension is beyond the standard
range, adjust the track tension through the fol-
lowing procedure.
Adjustment
Increasing track tension
To increase the track's tension, prepare a
grease gun.
1. Add grease with the grease gun through
the grease
fi
tting (2). (The grease
fi
tting (2)
and the screw plug (1) are integral.)
2. Slowly travel the machine forward (7-8 m
(23 ft - 26 ft 3 in)) in order to check whether
the track tension is suitable.
3. Check the track tension again. Readjust
the tension if it is still beyond the standard
range.
4. Continue to add grease till the distance
(S) becomes null (0). If the tension is still
loose, it is probably because the pin roll
and bushing are overworn. The pin rolls or
bushings must be swapped or replaced.
Contact your Sany distributor for repair.
●
The screw plug (1) is possible to
fl
y out
under high-pressurized grease. Never
loosen the screw plug (1) over one
turn.
●
Never loosen any other components
except the screw plug (1). Never face
the installation direction of the screw
plug (1).
●
If the track does not loosen with the
following method, contact your Sany
distributor.
1
CZ335-1104017
1
2
CZ335-1104018
S
CZ335-1104019
CAUTION
Fig. 5-26
Fig. 5-27
Fig. 5-28