Valve Adjustments, 2Wd Traction Manifold - Genie Z80/60 Service Manual

Section 4 • Repair Procedures
MANIFOLDS
8-13
Valve Adjustments, 2WD
Traction Manifold
How to Adjust the Charge
Pressure Relief Valve
Note: Perform this procedure with the hydraulic oil
temperature from 100°F to 150°F / 38°C to 65.5°C.
1 Connect a 0 to 600 psi / 0 to 50 bar pressure
gauge to the test port on the drive pump.
2 Use a wrench to hold the charge pressure relief
valve and remove the cap (item EG).
3 Turn the internal hex socket fully in a clockwise
direction until it stops. Install the cap.
4 Start the engine from the ground controls.
5 Press and hold the function enable/high rpm
select button (rabbit symbol) position. Note the
reading on the pressure gauge.
6 Turn the engine off.
7 Remove the pressure gauge from the drive
pump. Connect the gauge to the test port
located on the drive manifold.
8 Use a wrench to hold the charge pressure relief
valve and remove the cap from the valve
(item EG).
9 Start the engine from the ground controls.
4 - 102
10 Press and hold the function enable/high rpm
select button (rabbit symbol) position.
11 Adjust the internal hex socket until the pressure
reading on the gauge is 40 psi / 2.8 bar less
than the pressure reading taken in step 5. Turn
it clockwise to increase the pressure or
counterclockwise to decrease the pressure.
Install the valve cap.
12 Turn the engine off and remove the pressure
gauge.
Z-80/60
June 2011
REV E
Part No. 88619