Hours Min.
Procedure:
Table: 008
GTH-4017EX
GTH-4514EX
GTH-4013EX
November 2008 Section 7 - Repair Procedures
TABLE 008
Document 57.0009.0427
25
GTH-4017EX GTH-4514EX GTH-4013 EX
Cylinder disassembly
Boom extension internal cylinder
GTH-4013EX
Bridge crane, payload 500 kg
Textile bridles or chains with hooks
Standard tools
92
2 30
1
Operation:
1 Set the boom to horizontal position and extend
it until the pin A is on the 3
rd
boom section.
2 Remove the screw fixing the pin to the 3
rd
boom
section using a 5mm Allen wrench.
3 Extract out and knock the pin using a plug of
soft material (aluminium, copper, wood, etc.).
If necessary, lift the cylinder using a jack under
the boom, corrisponding to the hole inside the
3
rd
boom section.
4 Retract the boom entirely, remove the screw
that locks the pin (B), using two 13mm wrench.
Extract out and knock the pin using a plug of
soft material (aluminium, copper, wood, etc.).
5 Place a container of suitable size under the
hydraulic piping before disconnecting.
PROTECT THE
ENVIRONMENT
Used oils must be handled and disposed of
according to local regulations. Address to
legally authorised centres.
6 With a 24 mm wrench, disconnect the two
hydraulic hoses (C) from the blocking valve, then
plug the disconnected connectors to prevent
dust and impurities from entering the circuit.
2
6
A
4
C
B
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