Function Pump - Genie Z-34/22IC Service Manual

July 2007
REV A
9-2

Function Pump

How to Test the Function Pump
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.
1 Tag, disconnect and plug the high pressure
hydraulic hose from the function 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 Gasoline/LPG models: Disconnect the ignition
coil wire from the center of the ignition coil.
Diesel models: Hold the manual fuel shutoff
lever clockwise to the closed position.
4 Turn the key switch to ground control and pull
the Emergency Stop button to the on position at
both the ground and platform controls.
Part No. 128267
5 Observe the pressure gauge while cranking the
engine. Immediately stop if the pressure
reaches or exceeds 3000 psi / 206 bar.
Result: The pressure gauge reads 3000 psi / 206
bar, immediately stop cranking the engine. The
pump is good.
Result: The pressure fails to reach 3000 psi /
206 bar, the pump is faulty and will need to be
serviced or replaced.
6 Remove the pressure gauge and install the
hydraulic hose.
7 Gasoline/LPG models: Install the ignition coil
wire to the center of the ignition coil.
Diesel models: Release the manual fuel
shutoff lever.
How to Remove the Function
Pump
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.
1 Tag, disconnect and plug the hydraulic hoses
from the pump.
2 Remove the pump mounting fasteners.
Carefully remove the pump.
Z-34/22 IC
Section 4 • Repair Procedures
HYDRAULIC PUMPS
Component damage hazard.
Hydraulic pressure in excess of
3000 psi / 206 bar may result in
severe component damage.
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.
4 - 37