Paragraph 16
FRONT DRIVE SHAFT AND SHiELD
Aii Modeis So Equipped
16.
REMOVE AND REINSTALL. Ib remove the
front drive shaft (2—Figs. 29 and 31), first remove
drive shaft shield as follows: Block rear wheels se-
curely and apply park brake. Refer to Fig. 28 and re-
move shield center
bolts.
Loosen shield rear bolts and
place a support under shield
(5).
Remove shield front
bolts,
then remove the shield.
Remove front coupler cap screws (4—Fig. 29 and
31) and move front coupler rearward on drive shaft
(2).
Remove rear coupler cap screws (4) and pry rear
coupler (5) forward on drive shaft. Support drive
shaft assembly, remove support bar
(1—Fig.
28) bolts
and lower assembly from tractor. Remove nuts and
washers and separate bearing retainer
(4),
shield sup-
port (3), shims (2) from support bar (1). If bearing
(3—Figs. 29 and 31) is loose, noisy or rough, remove
coupler (1 or 5) and remove bearing (3) from drive
shaft (2). If bearing seat on drive shaft is worn, re-
verse ends of drive shaft when installing bearing.
When reassembling, install bearing on drive shaft
in correct position and install the removed coupler
so that bolt holes on both couplers align. Install bear-
ing retainer
(4—Fig.
28), shield support
(3),
shims (1)
and support bar (1) on drive shaft bearing (3—Figs.
29 and 31). Do not tighten nuts at this time. Raise
drive shaft assembly in place and tighten support bar
(1—Fig. 28)
bolts.
Slide couplers on drive pinion shaft
and transfer case output shaft. Align cap screw holes
with grooves on shafts. Install coupler cap screws and
tighten to a torque of 130 ft.-lbs. (175 N-m). Attach
and zero a dial indicator against the bottom of drive
shaft near the bearing. Tighten bearing retainer nuts
and check drive shaft deflection on the dial indica-
tor. Alignment is correct when a deflection of 0-0.002
inch (0-0.05 mm) is obtained. Change shims as neces-
sary to obtain this deflection. Shims (2) are availa-
CASE/iNTERNATiONAL
ble in thicknesses of 0.020, 0.040 and 0.080 inch (0.5,
1.0 and 2.0 mm).
Reinstall shield by reversing the removal procedure.
TRANSFER GEARBOX
Two types of transfer gearboxes have been used.
One type is the mechanical shift (dog clutch) shown
in Fig. 29. The other type is equipped with an elec-
tric/hydraulic operated multiple disc clutch (Fig. 31).
The clutch is engaged by three Belleville springs
when hydraulic power is switched OFF. When hy-
draulic power is switched ON, the piston collapses
the Belleville springs and clutch is disengaged.
Fig. 28—View of front drive shaft shield and relative
components.
1.
Support bar
2.
Shims
3.
Shield support
4.
Bearing retainer
5.
Shield
n
Fig. 27—Views of bevei ring gear tooth contact patterns.
A. Proper tooth
contact, coast side
pattern
B.
Proper tooth
contact, drive side
pattem
C. Pinion requires
thicker shim,
coast side pattem
D.
Pinion requires
thicker shim,
drive side pattem
E. Pinion requires
thinner shim,
coast side pattem
F.
Pinion requires
thinner shim,
drive side pattern
20
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