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November 2008
Renewing the flexible hoses inside the boom
Procedure:
GTH-4017EX
How to renew flexible hoses:
PROTECT THE
ENVIRONMENT
Before disconnecting the hydraulic piping, place
containers of suitable size underneath to prevent
oil spillage.
CAUTION
Plug all disconnected parts to prevent dust or
impurities from entering the circuit. They can
cause serious damage.
DANGER
Before disconnecting the hydraulic piping,
ensure there is no pressure in the line. In case,
release the pressure by operating the control
levers with the engine stopped.
In any case, disconnect the hydraulic piping
with extreme caution and always wear suitable
personal protection equipment -e.g. goggles,
gloves, facial screen, etc.
Wrap up the end of the pipe to be disconnected
with some rags and slowly loosen the pipe
connector so that air comes out as slow as
possible.
Document 57.0009.0427
GTH-4017EX GTH-4514EX GTH-4013 EX
014
Table:
GTH-4017EX
GTH-4514EX
GTH-4013EX
Standard tools
1 Before disconnecting or refitting a flexible hose,
carefully clean the area all around.
2 Blow some compressed air to remove any
impurity.
3 For an easier renewal of the hoses, whose run
is not clearly visible, proceed as follows:
- retract the boom completely and keep it about
45°-50°
- install on the lifting cylinder the clamp to stop
the boom
- disconnect the hoses (A) under the boom,
using a 27 mma combination wrench
- install a 1/2 plug on the iron hoses
- start the machine, extend the boom until the
two holes of the firts section are free
- insert the pipe fittings of the hoses (A) inside
the first section boom, and extract them from
the rear part of the boom.
3
Section 7 - Repair Procedures
TABLE
Hours Min.
2
A
014
-
-
2
43
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