How To Adjust The Function Pump Standby Pressure - Genie GTH-1048 Service Manual

March 2016
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. 123701
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 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-1048 • GTH-1056
Service Manual
Hydraulic Pump
Courtesy of Crane.Market
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