Buick LeSabre 1965 Service Manual page 425

PROPELLER SHAFT, 45, 46, 4 8 , & 4 9 0 0 0 SERIES 6-59
the hole b e t w e e n the clamp
screws so both can be reached.
Offset the hole approximately
1-1/4" from the car centerline
and drill the 5/16" hole. See
Figure 6-116.
5. Place the two hose clamps
side by side with the heads to-
gether and 180° from the crayon
marking. See F i g u r e 6-117.
Tighten the clamps.
6. Run the car through the speed
range to 65 - 70 MPH. If no un-
balance is felt, nothing further
need be done on the hoist. How-
ever, if unbalance still exists,
rotate both clamps to the opposite
side of the shaft and retighten.
Run car again and notice if the
unbalance feel is better or worse;
if worse, return the clamps to
the original position. Apparently
the combined weight of the two
hose clamp heads was excessive,
so to reduce this excess rotate
the clamp heads away from each
other 45° (one each way from the
original position). See Figure
ROTATING CLAMP HEADS
AWAY FROM EACH OTHER
REAR
PROPELLER
SHAFT
Figure 6-118—Rotating Hose Clamp Heads from Each Other
6-118. Run car and note if un- danger of overheating the trans -
balance has improved. mission or engine.
7. Continue to rotate the clamps
apart in smaller angular incre-
ments until the car feel for un-
balance is best.
CAUTION: Do not run car on
hoist for extended periods due to
8. Roadtest the car again for
final check of balance.
NOTE: Vibration felt in the car
on the hoist may not show up in
a roadtest which is after all the
final determining factor.