6-34 Maintenance
5. Heat damage
6.4.2.2 Adjustment of wire rope
The telescoping wire rope would stretch and elongate after long-time use, which will cause improper tele-
scoping of telescoping boom, falloff of wire rope from pulley, vibration of boom section during telescop-
ing and whipping of wire rope on boom. Therefore, it’s necessary to periodically check and adjust the
tension of wire rope. The assembly diagram of telescoping system is shown in Figure 6–12.
Figure 6-12 Assembly diagram of telescopic system
No Name No Name
1
Locknut for 3rd
extension rope
10
Locknut for 5th
extension rope
2
Locknut
11
Locknut
3
3rd retraction rope
12
3rd extension rope
4
4th retraction rope
13
4th extension rope
5
5th retraction rope
14
5th extension rope
6
Locknut for 3rd
retraction rope
15
Locknut for 5th
retraction rope
7
Locknut
16
Locknut
8
Locknut for 4th
extension rope
17
Locknut for 4th
retraction rope
9
Locknut
18
Locknut
Inspection method:
1. Luff the telescope boom to be horizontal, extend and retract the boom, check if 2nd, 3rd, 4th and 5th
boom sections simultaneously start moving accordingly. Adjust the tightness degree of wire rope if the
movement of 3rd section boom lags behind 2nd section boom.
XGS58E Instruction Manual
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