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5-2
PART
5·1
DRIVE LINE
~tion
Pace
Section
Pap
1
Description and Opet·ation .
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5-2
3 Replacement
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1).2
2
Tl'ouble Diagnosis
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5-2
Removal
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5-2
0
DESCRIPTION AND OPERATION
The drive shaft is the means of
transferring power from the engine
to the differential in the rear axle
and then to the rear wheels. The
drive shaft incorporates two uni-
versal joints and a slip yoke. The
universal joints are provided with
a threaded plug which can
be
re-
moved to lubricate the universal
joints when necessary. The splines
in the yoke and on the transmission
output shaft permit the drive shaft
to move forward and rearward as
the axle moves up and down.
All drive shafts are balanced. If
the car is to
be
undercoated, cover
the drive shaft to prevent applica-
tion of the undercoating material.
B
TROUBLE DIAGNOSIS
DRIVE SHAFT TROUBLE DIAGNOSIS AND POSSIBLE CAUSES
DRIVE LINE VIBRATION
U.JOINT NOISE
EJ
REPLACEMENT
REMOVAL
1. To maintain drive line bal-
ance, mark the relation of the slip
yoke and the drive flange on the axle
with the shaft so that they may
be
installed in their original positions.
2. Disconnect the rear U-joint
from the drive pinion flange. Pull
the drive shaft toward the rear of
the car until the front U-joint yoke
clears the transmission extension
housing and the seal.
Undercoating or other foreign
material on shaft.
Universal joint U-bolts loose.
Universal joints worn, or lack of
lubricant.
Drive shaft mis-aligned (drive
line angle).
Pinion flange runout.
Pinion runout.
Universal joint U-bolts loose.
Lack of lubrication.
3. Remove the snap rings that
retain the bearings in the yoke and
drive shaft (Fig. 1
&
2 ).
4. Place the U-joint in a vice or
a press.
5. Select a socket wrench with
an outside diameter slightly smaller
than the U-joint bearings. Select
another socket wrench with an
inside diameter slightly larger than
the bearing outside diameter.
6. Place the socket wrenches at
All universal joints have the cap
retaining clips on the inside of the
drive-shaft yokes.
351 C.l.D. vehicles have U-bolts
to attach the rear U .J. to the Pinion
Flange
(Fig.
1 ). All other vehicles
use clamp plates and bolts as
shown in Fig. 2.
Drive shaft and universal joints
180 deg. out of
phase.
Broken rear spring centre bolt.
Broken rear spring.
Rear springs not matched (sagged
to one
side).
Drive shaft damaged (bent) or
out of balance (missing balance
weights).
Worn U-joints.
opposite bearings so that the smaller
socket becomes a bearing driver and
the larger socket becomes a bearing
receiver when the vice jaws come
together (Fig.
3).
7. Close the vice jaws until the
spider contacts the yoke or drive
shaft. Remove the driveshaft from
the vice. Remove the one bearing
with channel lock pliers.
8. Reverse the sockets and press
the opposite bearing outward until .
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