New Holland CX720 Repair Manual page 2498

Neutral
Forward
Reverse
5. High Pressure
The high prerssure is determined by the two multi
function valves (1). The relief valve setting is 450 bar
(6525 psi). The pressure limiter will start to destroke
the pump servo cylinders at 420 bar (6090 psi).
The high pressure can be checked at pump test ports
(M1) for forward, Fig. 4, and test port (M2) for re-
verse, Fig. 5.
The pressure can also be checked at the drive motor.
Forward high pressure at test port (M1) and reverse
high pressure at test port (M2).
Block the front and rear wheels with suitable blocks
so the machine cannot move. Make sure everyone is
clear of the machine before starting the engine. Z010
6. With the gauges installed put the transmission in 4th
gear, start and run the engine at high idle, hold the
brake pedals down and move the hydrostatic control
lever forward, then rearward. Record the pressure
gauge readings. Only hold the system in the over-
pressure situation for a few seconds and return to
neutral as soon as possible.
Never operate the engine in a closed building. Proper
ventilation is required under all circumstances. R142A
Neutral
Forward
POWER TRAIN - TRANSMISSION Hydrostatic
10 Bar
145 PSI
14 Bar
203 PSI
7 Bar
102 PSI
CAUTION
CAUTION
35 Bar
508 PSI
65 Bar
943 PSI
Servo Pressure
Forward Servo
5
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Forward Pressure
Low Idle
2 4/7/2006
C.20.F / 46
Reverse Servo
10 Bar
145 PSI
5 Bar
73 PSI
10.5 Bar
152 PSI
High Idle
38 Bar
551 PSI
90 Bar
1035 PSI
4
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