Hydraulic Pump - Rev A; Function Pump - Genie GS-2046 Service Manual

Section 4 • Repair Procedures
800-610-4101
ActionRental.com
Hydraulic Pump
5-1

Function Pump

The hydraulic pump is attached to an electric
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 350 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 at both the ground and platform
controls.
4 - 58
4 Activate the platform up function from the
5 Remove the pressure gauge and reconnect the
ON
Genie GS-2046 and GS-2646 and GS-3246
ground controls.
Result: If the pressure gauge reads
3200 psi / 221 bar, immediately stop. The pump
is good.
Result: If pressure fails to reach
3200 psi / 221 bar, the pump is bad and will
need to be serviced or replaced.
Component damage hazard.
There is no relief valve in the
hydraulic pump and the pump can
be damaged if the pressure is
allowed to exceed 3200 psi / 221
bar. When testing the pump,
activate the pump in one second
intervals until 3200 psi / 221 bar is
confirmed. Do not over-pressurize
the pump.
hydraulic hose.
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.
June 2003
REV A
Part No. 72972