New Holland CX720 Repair Manual page 2795

5. Remove the external line (2) which runs from the
charge (pilot) pressure to disengage port (3) to the
drain valve. Using a hose long enough to exit the
SIDE of the combine, connect a 70 bar (1000 psi)
pressure gauge to the charge (pilot) pressure to dis-
engage port (3) on the E-T II valve. The gauge hose
will require a female -4 JIC type fitting to attach to the
charge (pilot) pressure to disengage port.
6. Place a cap on the drain valve port which the external
line was connected to on the E-T II valve.
7.
Route the hoses for the pressure gauge so they will
not contact the rear wheels. Z109
NOTE: Label the pressure gauges according to the pres-
sure port which they are connected to on the E-T II valve.
This will avoid confusion when taking pressure readings.
NOTE: If the required amount of gauges are unavailable
for system pressure readings and forward/reverse pres-
sure readings, the system pressure tests and forward/re-
verse pressure tests can be performed independently of
each other.
8. Using a hose long enough to exit the SIDE of the
combine, connect a 520 bar (7500 psi) pressure
gauge to the reverse system pressure test port (1)
on the E-T II valve. The gauge hose will require a
male -4 JIC type fitting to attach to the reverse sys-
tem pressure test port.
9. Remove the external line (2) which runs from the
charge (pilot) pressure to engage port (3) to the drain
valve. Using a hose long enough to exit the SIDE of
the combine, connect a 70 bar (1000 psi) pressure
gauge to the charge (pilot) pressure to engage port
(3) on the E-T II valve. The gauge hose will require a
female -4 JIC type fitting to attach to the charge (pi-
lot) pressure to engage port.
Place a - 4 JIC cap on the drain valve port which the
external line was connected to on the E-T II valve.
IMPORTANT: The hydraulic oil in the combine must be
at operating temperature and the engine must be at rated
speed when performing hydraulic testing for accurate test
results.
10. Start the combine engine and increase throttle until
the combine engine reaches rated speed. Warm the
hydraulic oil in the combine to normal operating tem-
perature by driving the combine and operating the
hydraulic system.
NOTE: Be sure that the assistant has a clear line of com-
munication with the person testing the hydraulic pressure
to avoid any dangerous situations that may occur.
TRAVELLING - 2WD-4WD SYSTEM Hydrostatic
CAUTION
2 4/7/2006
D.14.E / 41
3
20016086
4
20016086