Cadillac 60 Series 1963 Shop Manual page 160

PROPELLER SHAFT AND REAR AXLE
7-11
Seventy-five series cars and the commercial
chassis.
4. Slide propeller shaft and front yoke off
transmission output shaft and through frame
tunnel section, removing it at the rear. Be careful
not to nick front yoke.
5. Slide a spare yoke into transmission exten-
sion housing to prevent oil loss.
b. Installation
1. Install cardboard shipping cover on front
yoke and slide propeller shaft through frame
tunnel.
2. Remove cover from yoke and lubricate yoke
with transmission fluid type " A " .
3. Remove spare yoke previously installed in
transmission extension housing, and install front
yoke on transmission output shaft.
4. Install two center bearing support-to-frame
bolts. Tighten bolts to 16 foot-pounds on 60 and 62
series cars, and 30 foot-pounds on Seventy-Five
series cars and commercial chassis.
5. Remove any nicks or burrs from rear axle
pinion flange and mating flange on rear universal
joint.
6. On 60 and 62 series cars, connect rear uni-
versal joint to pinion flange. Apply parking brake
to prevent propeller shaft from turning and install
four screws and lock washers, tightening screws
to 65 foot-pounds.
CAUTION: Do not use a pry bar or heavy
tool to hold propeller shaft when tightening
flange attaching screws, otherwise universal
joint bearing seals will become damaged.
On Seventy-Five series cars and commercial
chassis, connect rear universal joint to pinion
yoke. Install " U " bolts, locks, and nuts, tight-
ening nuts to 15 foot-pounds.
7. Lower car on hoist.
Horizontal or vertical alignment of propeller
shaft should not be necessary on 1963 model cars,
other than making certain that the propeller shaft
is properly aligned in relation to the transmis-
sion. Any vertical deviation from the correct
installation that might cause propeller shaft
vibration at low speed (0-50 mph), can usually be
corrected by adding .075 inch shims at the engine
rear mount. Not more than four shims should be
used, otherwise there will be insufficient clear-
ance between transmission and floor pan.
Usually the addition of shims will eliminate low
speed vibration caused by misalignment of pro-
peller shaft at transmission. However, other
factors contributing to this condition could be due
to universal joint failure, excessive tire or wheel
runout, wheel, tire, or brake drum out of balance,
and tires other than original equipment being used.
11. Propeller Shaft Front Slip
Yoke Leak Test
1. Remove propeller shaft as described in Note
10a.
2. Hold open end of yoke up and fill with solvent.
3. Check area around yoke plug for signs of
leaking.
4. If plug is loose or leaks, install new slip
yoke and front universal joint assembly.
5. After leak test, remove all traces of solvent
with compressed air.
6. Install propeller shaft as described in Note
10b.
12. Standard Universal Joints Removal
and Installation
Disassembly and repacking of the universal
joints is not recommended. Disassembly is rec-
ommended only when joint is loose, worn or noisy,
and then universal joint should be replaced. When
an original universal joint has been disassembled,
it can not be reassembled because there are no
provisions for replacing the injected nylon ring
between the bearing cup and yoke. Disassembly
and repacking of replacement joints is not rec-
ommended because changes in the normal wear
pattern on the needles will invite premature wear
and eventual failure.
NOTE: Constant velocity type universal
joints are not serviced separately from pro-
peller shaft assembly. The following procedure
pertains to standard universal joints used on
Fig. 7-15 Installing Searing Remover Tool