Service and Repair Manual
October 2018
Hydraulic Pumps
116
Z®-135
/70
Part No. 1268557GT
How t o Prime the F uncti on Pump
How to Prime the Function Pump
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications,
Hydraulic Hose and Fitting Torque
Specifications.
1
Remove the case drain hydraulic hose from
the top of the function pump.
Note: The case drain hose is the smaller of the two
hoses on top of the function pump and closest to
the drive pump.
2
Locate and open the hydraulic tank shut-off
valve at the hydraulic tank that supplies
hydraulic oil to the function pump. Do not open
the valve for the drive pump.
3
When hydraulic fluid begins to come out of the
case drain port of the function pump, install the
function pump case drain hose.
4
Clean up any oil that may have spilled.
Properly discard the used oil.
5
Start the engine from the ground controls.
6
Check for hydraulic leaks.
How t o Adj ust t he Functi on Pump Standby Pr ess ure
How to Adjust the Function Pump
Standby Pressure
1
Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to the test port on the function
manifold
2
Start the engine from the ground controls and
allow the engine to run at low idle.
3
Observe the pressure reading on the pressure
gauge.
Result: The gauge should show 250 psi /
17 bar.
Result: If the gauge does not show 250 psi /
17 bar, proceed with step 4 to adjust the
function pump standby pressure.
4
Loosen the set screw for the standby pressure
adjustment screw.
1 standby pressure set screw
2 standby pressure adjustment screw
Summary of Contents for Genie Z-135/70
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Page 233: ...October 2018 Service and Repair Manual 219 Generator Wiring Schematic ...
Page 236: ...Service and Repair Manual October 2018 222 Hydraulic Generator Welder Option ...
Page 242: ...Service and Repair Manual October 2018 228 Hydraulic Schematic from serial number 535 ...
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