COATS 50xx Series Tire Changer - Manual (Page 15)

STAGES OF INFLATION
Review these descriptions and diagrams carefully.
Refer to them as necessary during bead sealing,
bead seating, and inflation to verify that you are
proceeding properly and safely.
Bead Sealing
A 140 PSI air blast from the table top jets creates an
air curtain to aid in bead sealing. Never exceed 10
PSI in the tire during bead sealing. The tire will
contain about 1/2 to 2 PSI when bead seal is
obtained.
Bead Seating
Bead seating usually occurs on the long tapered
side of the wheel first and the shorter side last. Bead
seating will usually require at least 7 PSI in the tire.
40 PSI is the maximum safe pressure at this stage
regardless of tire operating pressure.
Most European import cars and many aftermarket
alloy wheels are very tight and can be difficult to
bead seat. Also note that asymmetrical hump and
run-flat tires are extremely difficult to bead seat.
Follow tire manufacturer's recommended procedure
for bead seating.
Inflation
After the beads are seated, the tire is inflated. Do
not inflate the tire above the manufacturer's
recommended pressure as stamped on the tire
sidewall. The typical inflation pressure for
automobile tires is between 24 and 45 PSI. Light
truck inflation pressure typically covers a wider
range.
MIS-MATCHED TIRES AND WHEELS
Never attempt to mount and inflate mis-matched
tires and wheels.
Mis-matched tire and
wheel combinations
explode, causing personal
injury or death to operator and bystanders.
For safety, do not attempt to mount and inflate
mis-matched tires and wheels.
COATS 50xx Series Rim Clamp Tire Changers • 13
Requires rubber lubricant on
both upper and lower beads
Air flow through valve requires
about 140 PSI air pressure drop to
insure sufficient flow on difficult
tires.
Lift tire up to
assist seal on
top side
Table top jets
Usually last to "pop" is top side
Requires visual confirmation of bead seat
Do not stand over
tire during inflation.
Do not stand over
tire during inflation.
Note the gap
in this area
Note 15°
Bead Seat
Even Size Wheels
14.0, 15.0, 16.0,
17.0, etc.
Even Size Tires
14.0, 15.0, 16.0,
17.0, etc.
Bead will not
seat properly
Half Size Tires
14.5, 15.5, 16.5,
17.5, etc.
Half Size Wheels
14.5, 15.5, 16.5,
17.5, etc.
DANGER