XCMG XE210C Operating & Maintenance Manual page 127

XE210C Hydraulic Excavator
are found near to the connections of pipes, the air leak may occur to these connections.
c) Check of refrigerant amount: after running the engine at 1500r/min for 1 to 3 minutes, check the
amount of refrigerant through a sight glass on the liquid reservoir.
d) Check of condenser: if the blade of condenser is blocked by dirt or bugs, its cooling effects will be
reduced. Therefore, keep them always clean.
e) Check of compressor: after using the air conditioner 5 to 10 minutes, touch the pipes on high- and
low-pressure sides. If they are normal, the pipe on high-pressure side shall be hot, while that on
low-pressure side shall be cold.
f) Check the mounting bolt for loosening: ensure the mounting bolt and other mounting or tightening
bolts of compressor are well tightened.
g) Check of belt and adjustment of tension: Check the compressor and fan belt for wears visually.
According to the above figure, check and adjust the tension of belt. The pressure of fan and
compressor belt: ca.98N, deflection: 7 to 10mm.

Check the tightening torques of bolt and nut.
Check the tightening torques of bolt and nut every 250 hours.
After the first 50 hour breaking-in period of machine, check the tightness of bolt and nut, and then
check it once every 250 hours. If loose, tighten the bolt up to the torque shown in Tightening of Bolt.
In case of replacement, replace it with the same or higher-class bolt and nut. For the bolt and nut
outside Tightening of Bolt, refer to "Tightening Torques".
Important: check or tighten the bolt and nut with a torque wrench.
a) Tightening Torques of Bolt
S/N
Fixing bolt of engine vibration isolating
rubber gasket (pump side)
1
Fixing nut of engine vibration isolating rubber
gasket (fan side)
2 Fixing bolt and nut of engine bearer
Fixing bolt of hydraulic oil tank
3
Fixing bolt of fuel tank
4
Fixing bolt of hydraulic pump
5
Fixing bolt of multi-way valve
6
Fixing bolt of multi-way valve holder
7
8 Fixing bolt of rotation gear
Fixing nut of battery
9
Fixing nut of cab
10
Fixing bolt of
rotary bearing
(upper car)
11
Fixing bolt of
rotary bearing
(lower car)
Fixing bolt of traction unit
12
Fixing bolt of driving wheel
13
14 Fixing bolt of bearing roller
Fixing bolt of
15
bearing wheel
Fixing bolt of
16
track plate
Table 2-4 Tightening of Bolt
Item
XE210C
XE230C/XE260C
XE210C
XE230C/XE260C
XE210C
XE230C
XE260C
XE210C
XE230C
Operating and Maintenance Manual 127
Bolt diameter
Qty
mm
18 2
12 4
10 14
18 4
16 4
20 4
12 3
16 4
20 13
10 2
16 4
22 32
22 36
20 36
22 36
16 60
16 44
16 16
18 56～64
18 72
18 72
18
368～376
18 376
Sleeve size Torque
mm Nm
27 410
18 120
16 70
27 300
24 210
30 600
18 120
24 210
30 600
16 50
24 210
34 800
34 800
30 600
34 800
24 300
24 300
24 300
410
27
410
27
410
27
410
27
27 410