Pontiac tempest 1968 Service Manual page 160

4C-1
CONTENTS OF THIS SECTION
SUBJECT PAGE
Inspection . 4C-1
Minor Services and Repairs
Alignment of Engine and Propeller Shaft. . 4C-1
Major Repairs
Remove Propeller Shaft 4C-1
S U B J E C T PAGE
Disassemble Universal Joints 4C-1
Cleaning and Inspection 4C-3
Assemble Universal Joints 4 C - 3
Install Propeller Shaft 4C-4
Torque Specifications 4C-4
INSPECTION
No periodic inspection of propeller shaft assembly
is required. Since propeller shaft assembly is a
balanced unit, it should be kept free of undercoating
and other foreign material which could upset shaft
balance. It is essential that locating mark on com­
panion flange be in alignment with mark on propeller
shaft yoke for optimum balance.
MINOR SERVICES AND REPAIRS
ALIGNMENT OF ENGINE AND PROPELLER SHAFT
All necessary differential pinion angle require­
ments are designed and built into rear upper and
lower control arm geometry. Slots in the engine
support rear crossmember provide for fore and aft
movement of engine-transmission assembly to pro­
vide for variation in positioning.
MAJOR REPAIRS
R E M O V E PROPELLER SHAFT
1. Mark propeller shaft rear yoke and differential
companion flange to insure their correct alignment
on re-assembly.
2. Remove U-bolt nuts, lockplates (or lockwashers)
and U-bolts from rear axle drive pinion companion
flange.
3. If bearing tie wire has been removed, use suit­
able rubber band or tape to hold bearings onto
journal, thus preventing loss of bearing rollers while
rear universal joint is being disconnected (Fig.
4C-1).
4. Remove complete propeller shaft assembly by
sliding it rearward and downward to disengage
splined yoke from splines on transmission output
shaft.
DISASSEMBLE UNIVERSAL JOINTS
bearings from universal joint yokes, use extreme
care so as not to lose needle rollers from
bearings.
On Pontiac - Because of elastic properties of nylon
retainers used on Pontiac universal joint bearings,
they must be pressed out which shears nylon re­
tainers in half, rendering bearings and journal un­
suitable for re-use. Therefore, upon re-assembly,
new bearing and journal assemblies employing
conventional snap ring retainers must be used.
Consult parts book for repair kit part number.
A. Differential End
1. Firebird and Tempest - Remove two snap ring
retainers from propeller shaft rear yoke bearing
shells by using screwdriver or similar tool.
2. Support journal on a press bed in manner that
will allow propeller shaft yoke to be moved down­
ward. Support front of propeller shaft on stand so
that propeller shaft is horizontal (Fig. 4C-2).
3. Using piece of pipe or similar tool with dia­
meter sufficiently large (slightly larger than 1 l / 8 H )
to encircle the bearing shell, apply force on yoke
(Fig. 4C-3) until downward movement of yoke and
stationary position of journal forces the bearing as­
sembly almost out top of yoke (Force applied on
yoke will shear nylon retainers which hold bearings
in place - Pontiac only).
4. Rotate propeller shaft 180° and repeat preced­
ing step to partially remove opposite bearing.
NOTE: On Firebird and Tempest—When removing
F i g . 4c-1 Bearings Held in Place by Tie Wire