New Holland CX720 Repair Manual page 2799

6. Using a line with a 0 - 19 lpm (0 - 5 gpm) inline flow
meter, connect the hose to the E-T II valve with a
female -8 JIC type fitting. Remove the plug in the
return-to-tank line and install the other end of the
flow meter line to the return-to-tank line using a male
-8 JIC type fitting. The flowmeter line must be long
enough to exit the side of the combine.
NOTE: Be sure that the assistant has a clear line of com-
munication with the person testing the hydraulic leakage to
avoid any dangerous situations that may occur. Make sure
the area around the combine is clear.
7. Have an assistant start the combine engine and in-
crease throttle until the engine reaches rated speed.
Have the assistant switch the combine gear selector
to position "3" and engage the RWD switch. While
applying full pressure to the combine brakes, have
the assistant engage the hydrostatic lever to the for-
ward position for thirty (30) seconds. Observe and
record the flow meter reading while standing back
away from the combine. Have the assistant shut the
combine off immediately if any hazardous conditions
should occur.
8. Repeat step 6 with the hydrostatic lever in reverse.
9. Have the assistant disengage the RWD system, shut
the combine engine down, and engage the parking
brake.
10. The volume of hydraulic fluid draining from the E-T
II valve should not exceed 3.6 lpm (1.0 gpm). If the
volume of flow exceeds this, the E-T II valve is worn
and needs replaced.
11. Disconnect the flow meter line and connect the re-
turn-to-tank line back to the E-T II valve. Check the
hydraulic fluid level in the reservoir. Add hydraulic
fluid if necessary.
12. Disconnect the wheel motor case drain line (1) (cen-
ter hose connection) from the left wheel motor. Con-
nect the flowmeter line used to test the E-T II valve
case drain flow volume to the wheel motor and the
drain line.
Attach the flowmeter to the side of the combine in a
position that the flowmeter will be easy to read. Make
sure the flowmeter line will not come in contact with
the combine tire.
Be sure that the assistant has a clear line of communi-
cation with the person testing the hydraulic leakage to
avoid any dangerous situations that may occur. Z105
IMPORTANT: Make sure the hydrostatic fluid is at operat-
ing temperature before performing this test.
TRAVELLING - 2WD-4WD SYSTEM Hydrostatic
CAUTION
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