Or Spray - Genie GTH-636 Service Manual

Section 4 • Repair Procedures
HYDRAULIC PUMP
How to Remove the
Function Pump
Bodily injury hazard. This
procedure requires specific repair
skills, lifting equipment and a
suitable workshop. Attempting this
procedure without these skills and
tools could result in death or
serious injury and significant
component damage. Dealer
service is strongly recommended.
Note: When removing a hose assembly or fitting,
the O-ring on the fitting and/or hose end must be
replaced and then torqued to specification during
installation. Refer to Section 2, Hydraulic Hose and
Fitting Torque Specifications.
Note: Perform this procedure with the engine off
and cool.
1 Disconnect the battery from the machine.
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
2 Remove the oil cap from the top of the hydraulic
tank.
3 Using an approved hand-operated pump, drain
the hydraulic tank into a suitable container.
Refer to Section 2, Specifications .
Bodily injury hazard. Beware of
hot oil. Contact with hot oil may
cause severe burns.
4 - 46 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
4 Remove the engine air filter assembly from the
machine.
5 Remove the front portion of the engine
enclosure assembly from the machine.
6 Tag and disconnect the wire harness from the
pump.
7 Tag and disconnect the case drain hose at the
top of the pump. Cap the fitting on the pump.
8 Tag, disconnect and plug the large hydraulic
supply line at the pump. Cap the fitting on the
pump.
9 Tag, disconnect and plug the high pressure
hose at the pump. Cap the fitting on the pump.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to squirt

or spray.

10 Remove the fasteners securing the heat
exchanger from the chassis bulkhead and let
the heat exchanger hang down.
Burn hazard. Contact with hot
engine components may cause
severe burns.
11 Remove the fasteners securing the pump to the
transmission. Remove the pump from the
machine.
June 2007
REV B
Part No. 97487