Hydraulic Pump - Genie GS-2046 Service Manual

Service Manual - First Edition
5-1

Hydraulic Pump

The hydraulic pump is attached to the motor which
makes up the Hydraulic Power Unit.
How to Test the Hydraulic Pump
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 Two, Hydraulic Hose and
Fitting Torque Specifications.
1 Disconnect and plug the high pressure
hydraulic hose from the hydraulic 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.
2 Connect a 0 to 5000 psi (0 to 345 bar) pressure
gauge to the high pressure port on the pump.
3 Turn the key switch to ground control and pull
out the Emergency Stop button to the
position.
4 Activate the platform up function from the
ground controls.
Result: If the pressure gauge reads 3700 psi
(255 bar), immediately stop. The pump is good.
Result: If pressure fails to reach 3700 psi
(255 bar), the pump is bad and will need to be
serviced or replaced.
5 Remove the pressure gauge and reconnect the
hydraulic hose.
Part No. 48339
ON
Genie GS-2046 & Genie GS-2646 & Genie GS-3246
Section 7 - Repair Procedures
Hydraulic Pump
How to Remove the
Hydraulic Pump
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 Two, Hydraulic Hose and
Fitting Torque Specifications.
1 Tag, disconnect and plug the hoses on the
pump. Cap the fittings 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.
2 Remove the pump mounting bolts. Carefully
remove the pump.
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