New Holland CX720 Repair Manual page 2619

Clutch - Remove (C.50.B.46 - F.10.A.10)
1. The engine gearbox clutch packs can be serviced
without removing the gearbox from the combine. Al-
though it is physically possible to remove the clutch
packs, great care must be exercised when working at
the gearbox level. The main clutch pack weighs ap-
proximately 31.7 kg (70 lbs), the unload clutch pack
will be slightly less.
Any operation or repair to the clutch packs that would
change the stack height of the unit, such as bear-
ing replacement, will require the entire gearbox be
removed from the machine. Improperly shimmed
clutch packs may cause early bearing failure.
2. Clutch Pack Removal
Attach a hose to the engine gearbox drain line (1) and
direct the open end to a suitable storage container.
Drain the oil from the gearbox.
Attach a hose to the hydraulic reservoir drain line (2)
and direct the open end to a suitable storage con-
tainer. Drain the oil from the reservoir.
NOTE: The engine gearbox holds approximately 11 L (11.6
qts) of oil.
NOTE: The hydraulic reservoir holds approximately 60 L
(16 gal) of oil.
3. Loosen the unloading auger belt tensioning spring
(1) Lift the belt from the gearbox sheave and store
it out of the way.
4. Turn out cap screws (1) and remove the belt ten-
sioner from the combine. Cap screw (2) may have
to be loosened to gain access to the lower mounting
cap screws. Store the tensioner in a suitable loca-
tion.
POWER TRAIN - PROCESS DRIVE Primary process drive
2 4/7/2006
C.50.B / 55
1
50012171
2
10012180
3
10012191