05-01-04
Drive Shaft
05-01-04
tralizing.
If a
vibration exists,
the
drive shaft should
be
disconnected
from
the
axle, rotated 180 degrees
and
reinstalled.
3.
Install
the
U-blots
and
nuts that
attach
the
U-joint
to the
drive pinion
flange. Torque
the
U-bolt nuts
to
specification.
On
vehicles equipped
with
a
double cardan joint, install
the
rear joint-to-drive pinion flange
at-
taching bolts. Torque
the
bolts
to spe-
cification.
YOKE
C1773-A
FIG. 5—Output Shaft Spline Seal
—
Continental Mark
III
and Thunderbird
IN-VEHICLE REPAIR
USE SUPPORT STAND
AS
A
STEADY REST
E 1685-A
FIG. 6—Marking Driveshaft
CHALK MARK
CLAMPS 18d*FR0M CHALK MARK
*« >
E 1686-A
FIG. 7—Installing Whittek Clamps
E
1687-
A
. 8—Rotating Whittek Clamps
DRIVESHAFT BALANCING
(SINGLE UNIVERSAL JOINT)
If rotating
the
driveshaft
180 de-
grees does
not
eliminate vibration,
the
driveshaft
may be
balanced using
the
following procedure:
1.
Place
the
vehicle
on a
twin post
hoist
so
that
the
rear
of the
vehicle
is
supported
on the
rear axle housing
with
the
wheels free
to
rotate.
2.
With
the
driveshaft rotating
at a
speedometer speed
of
40-50
mph,
carefully bring
a
crayon
or
colored
pencil
up
until
it
just barely contacts
the rearward
end of
driveshaft
(Fig.
6).
The
mark made
by the
crayon
or
pencil will indicate
the
heavy side
of
the shaft. Care should
be
exercised
when working near
the
balance
weights
to
prevent injury
to the
hands.
3.
Install
two
Whittek type hose
clamps
on the
driveshaft
so
that
the
heads
are
located
180
degrees from
the crayon marking
(Fig. 7).
Tighten
the clamps.
4.
Run the
vehicle
up to
65-70
mph
speedometer speed.
If no
vibration
is
felt, lower
the
vehicle
and
road test.
If
unbalance still exists rotate
the
clamp
heads approximately
45
degrees away
from each other
and
test
for
vibration
(Fig.
8).
5.
Continue
to
rotate
the
clamp
heads apart
in
smaller amounts until
vibration
is
eliminated.
To
prevent
overheating,
do not run the
vehicle
on
the
hoist
for an
extended period.
6. Road test
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