Buick LeSabre 1965 Service Manual page 369

REAR AXLE
6-3
AXLE
TYPE
STANDARD
DIFFERENTIAL
POSITIVE
TRACTION
DIFFERENTIAL
MFG.
AXLE
CODE
NA
NB
NC
NN
NO
NP
RATIO
3.55
3.08
(S.C.O.)
3.55
3.08
(S.C.O.)
SERIES
45 SYNC.
45 2 & 3-SP. AUTO.
ALL
45 SYNC.
45 2 & 3-SP. AUTO.
ALL
( FIELD IDENTIFICATION)
FOR FIELD IDENTIFICATION, ALL AXLE
ASSEMBLIES TO BE STAMPED ON BOTTOM
OF AXLE TUBE AS INDICATED FROM
CHART. SAMPLE MARKING FOR 3.08 RATIO.
DATE JULY 22 WOULD BE . . . STANDARD
AXLES A-203, POSITIVE TRACTION AXLES
© A-20 3.
SAMPLE MARKING FOR S.C.O. RATIO
DATE JULY 22 WOULD BE . . . STANDARD
AXLES 2.56-203, POSITIVE TRACTION
AXLES ©2.56-203
.50 DIA. APPROX.
TO BE ON BOTTOM OF AXLE TUBE WITH
FIELD IDENTIFICATION CODE
NOTE: "S.C.O." INDICATES SPECIAL ORDER AXLE
Fig. 6-1—Rear Axle Markings
surfaced concrete, cause noise
which may be mistaken for tire
or rear axle noise. Driving on a
different type of road, such as
smooth asphalt or dirt, will quick-
ly show whether the road surface
is the cause of noise. Road noise
usually is the same on drive or
coast.
(2) Tire Noise. Tire noise may
easily be mistaken for rear axle
noise even though the noisy tires
may be l o c a t e d on the front
wheels. Tires worn unevenly or
having surfaces of non-skid di-
visions worn in saw-tooth fashion
are usually noisy, and may pro-
duce vibrations which seem to