Cadillac V-63 1923 Operator's Manual page 13

18
OPERATION
DEMOUNTABLE RIMS
Demounting Rim with Tire
Jack up the axle until the wheel is free from the ground. Then remove
the valve cap and the valve stem clamping nut. Loosen the eight rim
clamping nuts with the brace wrench furnished with the tool kit. Turn
each clamp so that the lug is away from the rim and hold it in this position
by tightening the nut slightly with your fingers. Turn the wheel so that
the valve is at the top and pull the bottom of the rim towards you un-
til it clears the wheel. The rim with tire can then be removed by lifting it
straight up.
Mounting Rim with Tire
If the rim you are mounting has no split clamping ring, take the one
from the rim removed. Turn the wheel so that the hole for the valve stem
is at the top. Hold the rim so that the valve stem is at the top and so that
the rim latch and the clamping ring are towards you. Insert the valve
stem and then push the bottom of the rim into place.
Turn each clamp to its original position and turn the clamping ring so
that the split in the ring comes directly under one of the clamps. Tighten
each clamping nut slightly. Then continue around the wheel, tightening
each nut firmly. Screw on the valve stem clamping nut and the valve cap.
Fig. 9. Pig- 10.
Removing Tire from Rim Removing Tire from Rim,
First Position. Second Position.
If the rim does not run true, mark the part that runs "out" from the face
of the wheel. Then slightly loosen the nuts diametrically opposite this part
and tighten the nuts at the marked part. Proceed in this manner until the
rim does run true.
Removing Tire from Rim
Caution—Do not attempt to remove a tire from a demountable rim with-
out first completely deflating the tire. Serious personal injury may result if
this is attempted.
OPERATION
19
The tire may be removed without removing the rim from the wheel.
Deflate the tire. Then open the lock with the pointed end of the tire tool
or with a screw-driver.
Raise one end of the ring with the tool as shown (Figure 9) until the
lug is clear of the slot in the rim.
Raise the end of the ring further and force the lug out over the edge of
the rim. (Figure 10.)
Start at the end of the ring, which is
out of the groove, and remove the entire
ring from the rim. (Figure 11.) (See note.)
Turn the wheel until the valve stem is
at the top, and pull the lower part of the
tire towards you until it is clear of the
rim. The tire may then be removed from
the rim by lifting it straight up.
Note—In removing the ring from the
rim, care should be taken to avoid open-
ing the ring beyond its elastic limit.
When the ring is free from the rim, the
ends should overlap from Yi to 1½ inches,
which they will do if the ring has not been
stretched in removal.
Fig. 11.
Removing Tire from Rim,
Third Position.
If the ends of the ring do not overlap they should be closed together
before replacing. If this is not done there is a possibility of the lock fail-
ing to engage the lugs on the ends of the ring. This might later be the
cause of an accident.
Fig. 12.
Placing Tire on Rim,
First Position.
Fig. IS.
Placing Tire on Rim,
Second Position.
Placing Tire on Rim
If the demountable rim is on the wheel, jack up the axle and turn the
wheel until the hole for the valve is at the top.