1935 Cadillac - GM Heritage Center

174
WHEELS, RIMS AND TIRES
The wheels and tires should also run as nearly
concentric as possible with the steering knuckle
spindle; that is, they should not run eccentric
more than ^ inch. Run-out or eccentricity of
the wheels and tires in excess of this amount can
oftentimes be corrected by deflating the tire and
changing its position on the wheel.
Excessively uneven tire wear on individual
wheels is an indication of misalignment or maladjustment.
Normal tire wear, however, is uneven between
the front and rear wheels because of the difference
in the function of the front and rear tires. For
this reason it is advisable to interchange the tires
as rights and lefts between front and rear every
4000 miles; that is, the right front tire should be
interchanged with the left rear and the left front
with the right rear. This has the advantage of
reversing the direction which the tire turns at
the same time that its position on the car is
changed, and thus equalizes the wear by subjecting
all tires to equal amounts of all types of wear
throughout their useful life. Interchanging the
tires in this manner will substantially increase the
safe-driving life of the tires.
9. Balancing Tires and Wheels
Tires are usually balanced to offset the weight
of the valve stem and if removed the tire tube must
be reinstalled in its original position with the valve
stem in line with the balancing mark on the outside
of the tire, otherwise the tire and wheel will be
unbalanced.
The wheel itself should also be in proper balance.
This can be effected frequently by shifting
the tire around in relation to the tube so that the
valve stem will be at the lighter side of the tire.
In other cases, it will be necessary to rebalance
the wheel itself, using detachable weights, such as
supplied by the factory Parts Division, placing
them on the light side of the wheel and as nearly
under the center of the tire as possible. These
weights are made in two styles, one for the rolled
edge drop center rim and one for the plain type
rim. The part numbers of these weights are as
follows:
892498—Balancer for rolled edge rim
1280290—Balancer for plain type rim
To balance a wheel, first remove it from the axle.
Then remove the felt washers and clean out the
grease from the bearings. Mount the wheel
upright on a suitable stand (a steering knuckle
clamped in a vise will do) and test the wheel by
rotating it slowly, allowing it to stop itself. When
the wheel stops, the heavier point will be at the
bottom. Mark this point and the uppermost
point of the wheel; then turn the wheel until these
points are in a horizontal position. Install balancing
weights on the light side until the wheel
balances in the horizontal position.
When this is accomplished, if the wheel has
been balanced with the tire off, the tire must be
installed in the proper position to preserve this
balance. The wheel bearings should then be
repacked with approved wheel bearing grease and
the felt washers reinstalled before putting the
wheel on the car again.
10. Location of LaSalle Jack Pads
The jack pad on LaSalle 350 rear springs should
be about 14¾ inches to the rear of the center of
the axle housing in order to assure sufficient lift
with the jack furnished with the car. In any case
where difficulty is experienced in raising the car
sufficient to remove and install the wheels, the
location of the pad should be checked, and moved
to the proper position.
Specifications
Subject and Remarks
LaSalle
Cadillac
350 355-D 370-D 452-D
Wheels and Rims
Checked with drum mounted on wheel.
Rim—
.007'
Drop center
16'
4.50*
.007'
Drop center
.17"
4.00'
.007"
Drop center
17"
4.19"
.007'
Drop center
17"
4.19'
Tires
Mark on tire should be placed in tine with valve stem.
Pressure in pounds—•
25
30
7.00 x 16'
35
35
7.00 x 17'
35
35
.750 x 17"
35
35
7.50 x 17'