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November 2008
Cylinder disassembly
Procedure:
Boom extension cylinder
GTH-401 EX - GTH-451 EX
Bridge crane, payload 500 kg
Textile bridles or chains with hooks
Operation:
1 Set the boom to horizontal position with the
telescope slightly extended to work on the
cylinder connecting pin (rod side).
2 Remove the screw fixing the pin to the boom
section using two 17mm wrench.
3 Extract out and knock the pin using a plug of
soft material (aluminium, copper, wood, etc.).
4 Remove the two screws of the bracket A using
a 22mm wrench.
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 from the blocking valve, then
plug the disconnected connectors to prevent
dust and impurities from entering the circuit.
Document 57.0009.0427
GTH-4017EX GTH-4514EX GTH-4013 EX
006
Table:
GTH-4017EX
GTH-4514EX
GTH-4013EX
Standard tools
A
2
6
Section 7 - Repair Procedures
TABLE
92
Hours Min.
2
006
S
30
1
21
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