Terex Genie Z-135/70, Service And Repair Manual

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Service and Repair Manual October 2018
Manifolds
148 Z®-135 /70 Part No. 1268557GT
8-12
Valve Adjustments - Traction
Manifold
How to Adjust the Hot Oil
Relief Valve
Note: The hydraulic oil temperature must be 100°F
to 150°F / 38°C to 65.5°C before performing this
procedure.
1 Connect a 0 to 600 psi / 0 to 50 bar pressure
gauge to either the "A" or "B" test port on the
drive pump.
2 Locate the hot oil relief valve on the traction
manifold. Hold the relief valve and remove the
cap.
3 Turn the internal hex socket clockwise fully
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 traction manifold.
8 Hold the hot oil relief valve and remove the
cap.
9 Start the engine from the ground controls.
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 on the
pump. Turn it clockwise to increase the
pressure or counterclockwise to decrease the
pressure. Install the relief valve cap.
12 Turn the engine off.
13 Remove the pressure gauge.