Procedure:
Table:
004
GTH-4013 SX
GTH-4017 SX
16 GTH-4013 SX GTH-4017 SX
Document 57.4403.4200
Section 7 - Repair Procedures
May 2008
TABLE
004
Haydraulic pumps disassembly
5
5
Remove the two electrical connections (
B
) of the
electrovalve which controls the machine forward/
reverse movements
6
Disconnect the hydraulic piping:
d
disconnect the two drain lines of the hydraulic
pump using a 36mm wrench,
d
disconnect the suction line of the hydraulic pump
with a 50mm wrench,
d
disconnect the “low pressure line” duct with a
19mm wrench,
d
disconnect the “transmission engine pilot circuit”
hoses using a 17mm wrench,
d
disconnect the four flanges which connect the
drive pump to the drive motor with a 10mm Allen
wrench,
d
disconnect the suction line of the service pump
using a 50mm combination wrench,
d
disconnect the delivery line ducts of the hydraulic
drive (
C
) and the main valve with a 36mm wrench
and a 24mm wrench.
d
disconnect the load sensing signal line from the
hydraulic drive with a 17mm wrench,
d
disconnect the hydraulic pump hoses using
a 24mm combination wrench and a 36mm
combination wrench.
WARNING
Once all operations have been performed, make
sure that all electrical wires and hydraulic lines are
disconnected from the motor.
7
Disconnect the service pump from the drive pump
by driving out bolts
A
with a 19mm combination
wrench. Place the pump on to a bench and plug
all the outlets
8
Remove the fixing screws
B
of the drive pump
using a 22mm combination wrench, then secure
the pump to the bridge crane with a textile sling
and pull it out of the motor. Place the pump on
6
B
6
C
D
7
A
B
B
A