Buick LeSabre 1965 Service Manual page 414

6-48
PROPELLER SHAFT, 4 5 , 4 6 , 4 8 , & 4 9 0 0 0 SERIES
6 - 2 3 PROPELLER SHAFT TROUBLE DIAGNOSIS (Cont'd)
COMPLAINT
Roughness on heavy accelera-
tion (short duration).
Roughness usually at low
speeds, light load, 15-35 MPH.
Whine or whistle.
Squeak.
Knock or click.
Scraping noise.
Boom period 30-40 MPH
carrying heavyloads or hauling
trailer.
POSSIBLE CAUSE
CV joint ball seats worn.
Seat spring set or broken.
Improperly a d j u s t e d joint
angles.
Center support bearing.
Lack of lubricant or worn CV
joint centering ball.
Joint hitting f r a m e tunnel,
49000 only.
Worn CV joint centering ball.
Loose upper or lower control
arm bushing bolts.
Broken or cut center bearing
support rubber.
Stones - gravel in frame tunnel,
49000 only.
Parking brake cable interfer-
ence in frame tunnel, 49000
only.
Slinger on companion flange
rubbing on rear axle carrier.
Excessive rear joint angle.
REMEDY
Replace with ball seat repair
kit.
Replace with ball seat repair
kit.
Check and adjust rear joint
angle, decrease front angle by
s h i m m i n g t r a n s m i s s i o n
support.
Place car on hoist with rear
wheels free to rotate and diag-
nose for source of noise. Re-
place center support bearing if
found to be noisy.
1. Lube.
2. Replace with ball socket kit
if lube does not correct.
Shim up or replace center
bearing mount.
Replace with splined yoke or
ball seat replacement kit.
Tighten bolts.
Replace c e n t e r b e a r i n g
support.
Remove stones and gravel.
Correctly route cable.
Straighten out slinger to re-
move interference.
Reduce angle.
6 - 2 4 REMOVAL OF
PROPELLER SHAFT
Whenever service is required, the
propeller shaft must be removed
from the car as a complete as-
sembly. During handling out of
the car, the assembly must be
supported in a straight line as
nearly as possible to avoid jam-
ming or bending any of the parts.
1. Remove four center bearing
attaching b o l t s (two bolts on
49000).
U-bolt clamps from rear univer-
sal joint. (On 49000, remove four
rear CV joint to pinion flange
bolts.) Mark both flange and shaft
to assemble in same p o s i t i o n .
CAUTION: If rear universal joint
bearings are not retained on the
2. At rear pinion flange, remove spider by a connecting strap, use