How To Prime The Function Pump; How To Adjust The Function Pump Standby Pressure - Genie SX-180 Service And Repair Manual

Service and Repair Manual
Hydraulic Pumps
How to 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.
92
How to Adj ust the Functi on Pum p 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 pressure gauge shows 350 psi /
25 bar. One or both of the functions pumps are
correctly set. Proceed to step 4.
Result: If the gauge shows a reading lower
than 350 psi / 25 bar, both the function pumps
need to be adjusted higher Proceed to step 6.
Result: If the gauge shows a reading higher
than 350 psi / 25 bar, one or both of the
function pumps need to be adjusted lower.
Proceed to step 8.
Note: The reading will show the higher pressure of
the two function pumps.
SX-180
June 2017
Part No. 1268497