Hours Min.
Procedure:
Table: 011
GTH-4017EX
GTH-4514EX
GTH-4013EX
November 2008 Section 7 - Repair Procedures
TABLE 011
Document 57.0009.0427
33
GTH-4017EX GTH-4514EX GTH-4013 EX
200
4060
16
100
1570
60
25
30
12,5
10
Thickn. 1÷2 mm
if needed
ADJUSTING THE PLAY WITH SHIMS
If the play between the boom sections is too great (2
mm or more), proceed in shimming the guide pads
of the boom sections.
Usually, the guide pads subject to premature wear
are:
• front bottom pads of the first and second boom
section
• rear top pads of the second and third boom
section
Proceed as follows:
1 Lower the boom to the ground and ensure the
telescope is fully retracted.
2 With a thickness gauge, check the play of all
pads.
After adjustment, the minimum play in the
narrowest point must be: 0,5÷1 mm.
3 Measure the thickness of the slide pads. The
value of the bottom pads of the fixed section and
of the top pads of the telescope must be at least
13 mm. For the remaining pads, the minimum
thickness must never be less than 9 mm.
4
If the thickness reaches the minimum value, renew
the pads before adjusting the residual play with
some shims
5 Remove the fixing screws from the pads and
position as many shims as necessary to reach
the normal thickness value.
Renewing the slide pads of the telescopic
boom GTH-4013EX
Standard tools
-
1 30
1
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