(See torque chart). Place side gear (38) and thrust
shaft and press outer cone (55) onto pinion shaft and
washers in position on pinions
into position in cup (54). Maintain full pressure on the
(b) Model 2385 On the rear axle lightly lubricate
cone and check for proper bearing preload. To increase
all parts of the no-spin differential unit as it is being
preload, shims (51) may be removed; to decrease
assembled. Assemble the no-spin unit (32, fig 5-19)
preload, shims may be added.
being careful to position the spring retainers (48) so that
(6) Press pinion and bearing assembly into
the spring (47) seats inside the cupped section A bolt
carrier until outer pinion bearing cup cage is
and washer can be used to hold the no-spin unit
approximately 1, '4" from face of carrier. During this
assembled, provided the washers are small enough to
operation, be certain the oil return holes are in line.
pass through the differential case ends (30) and (34)
(7) Split shims (51) are provided for adjustment
after the case bolts are tightened. If a retainer bolt is not
of pinion tooth contact. Approximately 0.016 shim pack
available, it is quite easy to assemble by hand pressure,
is the basic amount for starting the adjustment, and
holding in position until a case bolt is started. Secure the
shims may be added or removed as required to move
differential case assembly to the ring gear (31) with bolts
pinion inward or outward. The shims are installed
(27) and nuts (29)
between bearing cup cage and face of carrier. The
(2) Place case (40) in position on case (27) Install
pinion assembly may now be drawn into position in
differential case bolts (25) and self locking nuts (39)
carrier by tightening screws (14, 53) evenly.
Tighten to specified torque. (See torque chart).
(8) Adjust backlash .008 to .011 as follows:
(a) If backlash is too great, back off adjusting
nut (41) on plain half case (40) and tighten opposite side
NOTE
until all lash is removed. Tighten nut on plain half case
Make certain matching marks of both
solidly to seat bearings. Back off nuts on flange side,
halves are in alignment.
one notch at a time and follow with opposite nut until
correct backlash is obtained.
(3) Press bearing cones (43) and install differential
(b) If
backlash
is
under
minimum
and bearing assembly in differential carrier (29). Place
specification, back off nut on flange half and tighten nut
adjusting nuts (41) in position. Install differential carrier
on opposite side. Operation should be done in one notch
caps (30) but do not tighten. Press input shaft (16) in
steps until correct backlash is obtained.
rear input shaft bearing cone (17). Install shaft and
(c) Tighten carrier cap (30) and recheck
bearing in carrier.
backlash, if backlash has changed, repeat above
procedure to correct.
NOTE
NOTE
Carrier cap bolts should be tightened
Make certain carrier caps are
to specified torque (See torque
reassembled on the same side they
chart).
were removed.
(9) Install differential bearing adjusting nut locks
(4) Press center bearing cone (48) onto pinion shaft
(22) and secure with screw (24) and lockwasher (23).
(44) with rollers upward; then slide shim kit (50) into
Tighten to specified torque. (para 1-4). Lockwire to
place, making certain the inside chamber is toward the
prevent loosening.
cone. This spacer as provided in the original assembly
(10)Install pinion drop gear (56) on pinion shaft,
is ground to proper length to obtain the specified bearing
(long hub outward). Place washer (57) on shaft and
preload of 13 to 23 inch-pounds rolling pinion bearing
install pinion nut (59). Tighten to specified torque. (para
resistance. Should a new pinion bearing cage or pinion
bearings be used in reassembly, a service spacer and
(11)Thrust screw adjustment (Model 2385).
skim kit must be used.
(a) Turn thrust screw (3, fig. 5-24).
(b) Install a dial indicator on end of thrust
NOTE
screw.
In the event that the bearing cage
(c) Turn thrust screw away from ring gear
does not require replacement, the
until a 0.012 reading is taken on the dial indicator. The
spacer
furnished
as
original
specification is' 0.010 to 0.015 distance from end of
equipment may be reinstalled.
thrust screw to side of ring gear. 0.012 was used as an
in-between reading.
(5) Press pinion bearing cups (49) into bearing
cage (52) then set cage and cup assembly in place over
5-48
