How To Adjust The Function Pump Standby Pressure - Genie GTH-1056 Service And Repair Manual

April 2017
3 Remove the plug and slowly fill the case drain
port of the pump with hydraulic fluid until the oil
level is even with the bottom of the hole. Install
the plug and torque to 40 ft-lbs / 54 Nm.
4 Start the engine, allow the engine to run at low
idle for 15 seconds then shut off the engine.
Wait 15 seconds, then start the engine again.
Allow the engine to run at low idle for
15 seconds and then shut off the engine.
5 Check for hydraulic leaks and clean up any oil
that may have spilled.
Part No. 1278145
How to Adj ust the Functi on Pump Standby Pr ess ure
How to Adjust the Function Pump
Standby Pressure
1 Connect a 0 to 1000 psi / 0 to 100 bar
pressure gauge to test port 'TP' on the primary
function manifold. Refer to Primary Function
Manifold Components.
2 Start the engine and allow the engine to run at
low idle.
3 Observe the pressure reading on the pressure
gauge.
Result: The pressure gauge reads 450 ±25 psi
/ 31 ±1.7 bar. The pump is functioning correctly.
Proceed to step 6.
Result: The pressure gauge fails to read 450
±25 psi / 31 ±1.7 bar. The pressure setting
needs to be adjusted. Proceed to step 4.
GTH-1056
Service and Repair Manual
Hydraulic Pump
51