Cadillac 60 Series 1963 Shop Manual page 150

PROPELLER SHAFT AND REAR AXLE
7-1
GENERAL DESCRIPTION
The standard differential carrier assembly used
on 1963, 60 and 62 series Cadillac cars is shown
in Fig. 7-1. A controlled type differential is
available as an option on all 1963 model cars.
A double lip rear axle pinion oil seal is used on
both type differential carriers. The flangeless
type seal case is of one piece construction and the
double lip feature provides a better seal to keep
dirt and water away from the oil sealing member.
A flange is used at the forward end of the rear
axle pinion on both the standard and controlled
differential carrier assemblies on all 60 and 62
series cars. A conventional pinion yoke is used at
the forward end of differential carrier assemblies
on Seventy-Five series cars and commercial
chassis. Aside from this, the differential carrier
assemblies are basically the same on all series
cars.
Rear Axle
The rear axle gear ratios used on the different
series cars provide maximum performance and
economy for each series. The 2.94-1 ratio is used
on all 60 and 62 series, except Air Conditioned
cars which use the 3.21-1 ratio. The 3.21-1 ratio
is also offered as an option on 60 and 62 series
cars not equipped with an Air Conditioner. The
3.36-1 ratio is used on all Seventy-Five series
cars and the 3.77-1 ratio is used on the com-
mercial chassis, as well as being optional on
Seventy-Five series cars.
Greased and sealed rear wheel bearings are
used on all 60, 62, and Seventy-Five series cars.
The bearings are sealed on the outer side by a
rubber grease seal that is an integral part of the
bearing. The inner oil seal, however, can be
serviced separately from the bearing. The rear
wheel bearings require no adjustment or periodic
lubrication. Sealing between the outer diameter of
the bearing and inner diameter of the axle housing
is accomplished by an O-ring seal that should be
replaced whenever the axle shaft is removed.
Rear wheel bearings on the commercial chassis
are sealed on both sides by grease seals that are
lubricated by an initial grease packing. An ad-
ditional inner shaft seal prevents differential
lubricant from entering the bearings and brake
assembly. Whenever a rear axle shaft oil seal is
removed, a new oil seal must be installed.
Propeller Shaft
Power is transmitted from the transmission to
the rear axle assembly by a two-piece propeller
shaft. The propeller shaft assembly used on all
Tapered Roller
Bearings
Lubricant Passage
to Front Bearings
Pinion Flange
Pinion Oil Seal
Greased and Sealed Wheel Bearing
Tapered Roller Bearings
" O " Ring Seal
Fig. 7-1 Differential Carrier and Rear Axle Assembly (60 and 62 series cars)