New Holland CX720 Repair Manual page 2836

Relief valve - Test (D.20.C.16 - F.40.C.01)
1. Turn steering onto full left hand lock.
2. Disconnect the left hand turn feed hose.
3. Install an elbow (1) Parker fitting 8 ELOS (13/16 UNF
ORFS) with quick release adaptor (2) parker fitting
PD38BTL.
4. Connect 0-250 bar (0-3600 psi) pressure gauge
293244 (3) with hose 292246, using quick release
coupler 291924.
5. Start the engine and set to high idle speed. Turn
steering wheel to the left with a pull of approximately
22 N (2.25 kgf , 5 lbf) and observe the pressure
reading.
If the steering test was satisfactory but the pressure
readings are away from specification the relief valve
in the main frame stack, priority valve slice must be
adjusted.
The pressure reading should be:-
175 bar (2538 psi) for all models.
NOTE: The use of a force greater than 5 lbf. at the rim of
the steering wheel may lead to slightly inaccurate readings
due to the pumping action of the hydrostatic steering motor.
TRAVELLING - STEERING Hydraulic
2 4/7/2006
D.20.C / 4
1
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