Advertisement
PROPELLER SHAFT AND UNIVERSAL JOINT
16-3
INERTIA YOKE
/
OUTPUT SHAFT
FRONT YOKE
I
\
I
SHAFT
NK565
I
SEAL
BUSHING
/
SEAL
Fig. L F r o n t Universal Joint Sliding Yoke
front joint
to
seal all working parts against road splash
and dust. The front joint, also is equipped with a pol-
ished jute breather. The breather lengthens the life
of the dust cover by decreasing the flexing action
caused by variations of air pressure within the joint
as the shaft moves fore and aft in the body.
All AR-2 and AP-2 Models with V-8 engines
equipped with A-727 TorqueFlite transmissions
use
propeller shafts with cross and roller type front uni-
versal joints (Figs. 3 and
4).
This joint incorporates an
internally splined yoke which slides fore and aft on the
transmission output shaft to compensate for movement
of the rear axle. An inertia type yoke is used at the
front end of the propeller shaft on these models. A
bellows type rubber seal provided with a nylon ring
which fits over the sliding yoke is used in the opening
of the extension housing to exclude road splash and
other foreign matter. A cross and roller type joint is
also used at the rear end of the shaft.
The universal joints and sliding spline are perma-
nently lubricated. The joints should be inspected, ev-
ery time the car is serviced, for external seal leak-
age. The joints need not be disassembled or relub-
ricated unless seal leakage is observed.
SERVICE PROCEDURES
PROPELLER SHAFT ANGULARITY
The quiet, smooth operation of the propeller shaft
depends upon proper alignment. Propeller shaft and
rear axle housing angles on all Models may be meas-
ured using propeller shaft alignment gauge Tool
(2-3976. When using this gauge on AV-1, AV-2 Models,
use propeller shaft alignment gauge adapter SP-5038
with the gauge when mounting it on the differential
carrier due to the two-step bumper bracket mounting
bosses.
The vehicle should be in a level position with no
additional weight except that the fuel tank must be
full.
Use
a
twin post or drive-on hoist, pit
or
wheel
or
frame alignment rack. Measure the level at the un-
derside of the body sill at the center of the front door.
CAUTION: The vehicle must
be supported by the
wheels or frame suspension lower control arms and
rear axle housing.
Do
not use a frame contact hoist
when measuring propeller shaft angularity.
(1) Remove the rebound bumper and plate assem-
bly from the top of the differential carrier.
(2) On all Models, except AV-1 and AV-2, hold the
gauge on the machined surfaces of the rebound b u m p
er plate bosses (Fig. 5). On AV-1 and AV-2 Models,
place propeller shaft alignment gauge adapter SP-
5038 between the gauge and bosses. Adjust the gauge
spirit level to center the bubble. The axle pinion
housing should be pointing downward at a slight angle.
Fig. 5-Measuring
Rear Axle Housing Angle-
A R - I , AR-2, AP-1
,
AP-2 Models
NOTE: Each time the gauge is used, the level must
be on the same side of the propeller shaft.
(3) Hold the gauge on the underside of the propel-
ler shaft near the rear universal joint (Fig. 6) and note
the location of the bubble in the spirit level. The en-
tire bubble should be within one and three gradua-
tions forward from center (Figs. 7 and 8).
b
Fig. 6-Measuring
Propeller Shaft Angularity
Hide quick links:
Advertisement
