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Section 7 - Repair Procedures
014
TABLE
Procedure:
Renewing the flexible hoses inside the boom GTH-4017EX
4 To renew the flexible hoses inside the boom
remove the chain and proceed as follows:
- remove the safety clamp on the rod of the
lifting cylinder
- start the thermal engine and hold the boom
in horizonthal position and fully retracted
- remove the two bracket (G) using a 13 mm
wrench
- make a list of the positions of the hoses
- disconnect the pipe fitting (B) from the hoses
in the rear part of the boom, usong a 27 mm
wrench
- remove the screws fixing the top bracket (C)
using a 17 mm open-end wrench
- remove the screws fixing the bottom bracket
(D) using a 5 mm hex wrench
- insert tha chain inside the boom until passing
the bracket that stop the same chain to the
boom
- using a bridge crane, extract the chain (E)
from the boom and lay it on a plane area or
on two stands.
5 To renew the flexible hoses inside the chain
proceed as follows:
- make a list of the positions of the hoses
- remove the hoses from the chain, ensure to
extract the side with 90° pipe fittings
- proceed in reverse order to re-assemble the
hoses inside the chian and inside the boom.
44
GTH-4017EX GTH-4514EX GTH-4013 EX
3
4
C
B
G
G
5
November 2008
014
Table:
GTH-4017EX
GTH-4514EX
GTH-4013EX
E
D
B
E
Document 57.0009.0427
F
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