9
4.0 Mounting and Demounting
Precautions
IMPORTANT!
BEFORE MOUNTING A TIRE ON A RIM ENSURE THE
FOLLOWING RULES ARE OBSERVED:
A. THE RIM MUST BE CLEAN AND IN GOOD
CONDITION: IF NECESSARY CLEAN AFTER
REMOVING ALL WHEEL-WEIGHTS INCLUDING ‘TAPE
WEIGHTS’ INSIDE THE RIM.
B. THE TIRE MUST BE CLEAN AND DRY, WITH NO
DAMAGE TO THE BEAD AND THE CASING.
C. REPLACE THE RUBBER VALVE STEM WITH A NEW
ONE OR REPLACE THE ‘O’ RING IF THE VALVE STEM
IS MADE OF METAL.
D. IF THE TIRE REQUIRES A TUBE, MAKE SURE THE
TUBE IS DRY AND IN GOOD CONDITION.
E. LUBRICATION IS NECESSARY FOR CORRECT
MOUNTING OF THE TIRE AND PROPER CENTERING.
USE ONLY AN APPROVED LUBRICANT FOR TIRES.
F. MAKE SURE THE TIRE IS THE CORRECT SIZE FOR
THE RIM.
4.1 Demounting Tubeless Tires
A. Remove all wheel-weights from the rim.
Remove the valve stem or core and deflate the tire
(Fig.4.0).
B. Break both beads.
Pay extra attention during this operation as it easy to
mistakenly keep your foot on the bead-breaking pedal too
long.
This could result in immediate bead damage (Fig.4.1)
WARNING!
ON CHEVROLET CORVETTE WHEELS WITH THE
OPTIONAL LOW PRESSURE SENSOR INSTALLED,
BREAK THE BEAD AT 90 DEGREES OFFSET FROM
THE VALVE STEM. DAMAGE TO THE WHEEL WILL
RESULT IF THE BEAD IS BROKEN AT ANY OTHER
POINT ON THE RIM.
C. Set the rim clamps to the proper position: retract clamps
to clamp the wheel from the inside and expand clamps to
clamp from the outside.
Clamping the wheels from the outside set the clamps at a
diameter nearly equal to the rim diameter, before placing
the wheel on the clamps. This will avoid the risk of pinching
the tire.
WARNING
TO MINIMIZE THE RISK OF SCRATCHING ALLOY RIMS,
THESE SHOULD BE CLAMPED FROM THE OUTSIDE
D. Liberally lubricate both beads.
Place the wheel WITH DROP CENTER UP (Fig.4.2) on
the turntable, and clamp in position. Hold the wheel down
while clamping.
G. Press bead seater pedal down swiftly to get air blast
from the inflator jets (Except 1520m). Air simultaneously
comes out from inflator hose.
ATTENTION!
WHEN OPERATING THE BEAD SEATER IT IS
MANDATORY TO WEAR SAFETY GLASSES TO
PROTECT EYES.
536
4.1
4.1
4.1
4.1
4.1
535
4.0
4.0
4.0
4.0
4.0
331
4.2
4.2
4.2
4.2
4.2
