Safety
Safety, Operation and Maintenance Manual - Sep 2012 2-63
SY115C9/135C/155H Crawler Hydraulic Excavator
Grease is injected into track tension ad-
justment system under high pressure. Fail-
ure to observe specifi ed maintenance pro-
cedures may cause the grease discharge
plug to eject and cause serious injury and
damage.
1
CZ335-1102080
Fig. 2-98
WARNING
2.5.10 Track tension adjustment precautions
CZ335-1102081
Fig. 2-99
●
When loosening the grease discharge plug
(1) to reduce track tension, the plug shall
be unscrewed slowly for no more than one
turn.
●
Keep your face, hand, foot or any other
body part away from the grease discharge
plug.
2.5.11 Recoil spring
The recoil springs are used to reduce the im-
pact of tension rollers. It includes a high pres-
sure spring, which may fl y out and cause seri-
ous injury or death if removed improperly.
If it has to be removed, contact your Sany dis-
tributor.