Maintenance
Safety, Operation and Maintenance Manual - Aug 2012
5-24
SY115C9/135C/155H Crawler Hydraulic Excavator
5.6 Safety-Related Parts
To ensure your safety during operating or driving the machine, user shall carry out regular main-
tenance on the machine. In addition, user shall also replace the parts listed in the table in order to
further improve the safety condition. These parts are closely related to safety and
fi
re prevention.
Since the safety-related parts may become easily worn or deteriorated due to material changing
along with the time, it is hard to judge their conditions through regular maintenance. These parts
shall be replaced as scheduled regardless of their conditions, which can effectively guarantee the
functions of these parts.
If any safety-related part becomes abnormal before its scheduled replacement, it must be re-
paired or replaced immediately.
If any hose deteriorates, such as deforming or cracking, the hose clamps shall also be replaced
while replacing the hose.
O-ring, gasket and other similar parts shall also be replaced while replacing a hose.
Consult your Sany distributor to replace the following safety-related parts on a regular basis.
No.
Safety-related parts subject to regular replacement
Quantity
Frequency
1
Fuel hose (fuel tank - water separator)
1
Every 2 years
or 4000 hours,
whichever occurs
fi
rst.
2
Fuel hose (water separator - primary
fi
lter)
1
3
Fuel return hose (engine - fuel tank)
1
4
Fuel hose (primary
fi
lter - engine)
1
5
Pump outlet hose (pump - control valve)
2
6
Work equipment hose (boom cylinder oil inlet)
4
7
Work equipment hose (Bucket cylinder line - boom root)
2
8
Work equipment hose (bucket cylinder oil inlet)
2
9
Work equipment hose (arm cylinder line - boom root)
2
10
Work equipment hose (arm cylinder oil inlet)
2
11
Swing drive hose (swing motor oil inlet)
2
12
Main oil suction hose
1
13
Travel control hose (control valve - swivel joint)
4
14
Travel control hose (swivel joint - travel motor)
4
15
Pump pressure hose
1
16
Accumulator (control oil)
1
17
High-pressure tube clamps
1
Every 8000 hours
18
Cover - fuel squirt prevention
1
19
Seat belt
1
Every 3 years
Table 5-6