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4-4
entia! case
houses two cone type
clutches behind the
side
gears. These
cones
are splined
to the
axle shafts,
their tapered faces bearing on the
differential case. Springs enclosed
in two thrust blocks
and
interposed
between the two
side
gears pre-load
the gears and cones, forcing the
tapered face
of
the
cones into
contact
with the differential case. The partial
locking action, due to the
spring
load
on the
cones
is automatically in-
creased by the inherent separating
forces between the
side
gears and
pinions. This locking action directs
the major driving force to the wheel
with the greater traction.
REMOVABLE CARRIER
TRACTION LOK AXLE
The rear axle is of the banjo-
housing hypoid gear type using a
9 inch ring gear, in which the centre-
line of the pinion is mounted below
the centreline of
the
ring gear.
The pinion gear and the pinion
bearings are assembled in a pinion
retainer which is bolted to the
carrier.
The pinion is straddle
mounted; that is, it is supported by
bearings both in front of and to the
rear of the pinion gear. Two opposed
tapered roller bearings support the
RING
GEAR
4209
SIDE GEAR
THRUST WASHER
4228
CENTER
BLOCK
(SHORT
PINION
SHAFT SEATl
4420
Plt~ION
GEAR
THRUST WASHER
4230
GROUP
4-REAR AXLE
pinion shaft in front of the pinion
gear with a collapsible spacer. A
straight roller
(pilot)
bearing sup-
ports the pinion shaft at the rear of
the pinion gear. Pinion and ring gear
tooth contact is adjusted by adding
or removing shims from between the
pinion retainer and the carrier
housing.
The differential assembly is moun-
ted on two opposed tapered roller
bearings, which are retained in the
carrier by removable caps. The
entire carrier assembly is bolted to
the axle housing.
Ball bearing assemblies
(rear
wheel
bearings) are pressed onto the outer
ends of the axle
shafts
and set in the
outer ends of the axle housing. These
bearing~
support
the semi-floating
axle
shafts
at the outer ends. The
inner ends of the shafts spline to the
differential
side
gears. Bearing re-
tainer plates hold the
shafts
in the
housing. The left and right axle
shafts
are not interchangeable, the
left shaft being shorter than the right.
The Traction-Lok (torque
se~si
tive) locking differential
(Fig.
4)
employs a multiple disc clutch to
control differential action. Shim(s)
which control side gear mounting
distance, four steel, four friction and
PRE"·LOAD SPRING
PLATE-4A326
one composite plate (steel on one
side and friction material on the
other) stacked on a clutch hub, and
four ear guides are housed in the
differential cover. Located in the
differential case between the side
gears is a one-piece pre-load plate
and block and four calibrated pre-
load springs, which apply an initial
force to the clutch pack. Additional
clutch capacity is derived from the
side gear thrust loads. The four
friction plates are splined to the
clutch hub which in turn is splined
to the left axle
shaft,
and the eared
steel plates are dogged to the case;
thus, the clutch is always engaged.
OPERATION
INTEGRAL CARRIER
CONVENTIONAL AXLE
The rear axle drive pinion receives
its power from the engine through
the transmission and drive shaft. The
pinion gear rotates the differential
case through engagement with the
ring gear, which is bolted to the case
outer flange. Inside the case, there
are two or four differential pinion
gears mounted on the differential
pinion shaft which is pinned to the
case. These pinion gears are engaged
with the side gears, to which the axle
FRICTION CLUTCH
PLATES-4945
DIFFERENTIAL
CASE COVER
4204
@NION DIFFERENTIAL!
CLUTCH
PLATE
EAR GUIDES
(4}
4A323
STEEL CLUTCH
PLATE S-4947
FIG. 4 -Removable Carrier Traction Lok Differential
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