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November 2008
Cylinder disassembly
Procedure:
Boom extension internal cylinder
GTH-4013EX
Bridge crane, payload 500 kg
Textile bridles or chains with hooks
Operation:
1 Set the boom to horizontal position and extend
it until the pin A is on the 3
2 Remove the screw fixing the pin to the 3
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
boom section.
rd
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.
Document 57.0009.0427
boom section.
rd
boom
rd
GTH-4017EX GTH-4514EX GTH-4013 EX
008
Table:
GTH-4017EX
GTH-4514EX
GTH-4013EX
Standard tools
A
C
Section 7 - Repair Procedures
TABLE
92
Hours Min.
2
B
008
30
1
2
4
6
25
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