COATS 50xx Series Tire Changer - Manual (Page 9)

INFLATION
Tire inflation is performed in three steps: Bead Seal,
Bead Seat, and Inflation. These steps are explained
in detail on page 13. Read the explanation of each
step and understand them thoroughly before
proceeding.
Check for proper inflation
gauge operation. Accurate
pressure readings are
important to safe tire inflation. Refer to the
Operating Maintenance section of this manual
for instructions.
If the rim has been
clamped from the outside
for tire mounting, release
the clamps, lift the tire, and move the clamps to
the center of the table top.
If the wheel/tire has a
diameter larger than 14
inches and is difficult to
bead seal, the clamps should be moved to the
center of the table top for the bead seal
operation.
Tire failure under
pressure is hazardous.
This tire changer is not
intended to be a safety device to contain
exploding tires, tubes, wheels, or bead sealing
equipment. Inspect tire and wheel carefully for
match, wear, or defects before mounting. Always
use approved tire bead lubricant during
mounting and inflation.
The inflation pedal, located at the rear of the left side
of the machine, controls the flow of air through the
inflation hose.
NOTE: The clip-on chuck on the end of the hose
should always be an open style with all parts in
proper working order.
Position 1 - Tire Pressure – With the inflation hose
attached to the tire valve and the pedal in this
position, the air gauge will register the air pressure
in the tire. Whenever your foot is removed from the
pedal, it will return to this position.
Position 2 - Tire Inflation – This is the first
activated position. With the inflation hose attached
to the tire valve and the pedal in this position, line
pressure is allowed to flow through the valve and
into the tire for inflation. Tire pressure is not
indicated on the gauge in this position.
Position 3 - Bead Sealing – This is the second and
last activated position. With the inflation hose
attached to the tire valve and the pedal in this
position, line pressure is allowed to flow through the
valve and to the air-flate bead seal jets on the table
top for bead sealing.
Use Position 3 for bead
sealing only. Do not use
this position without a tire
and wheel positioned on the table top. Dirt and
debris could be blown into the air with enough
force to injure the operator or bystanders. Do
not use this position to inflate a tire.
S. The unit is equipped with a pressure limiter to
assist the operator with proper tire inflation. When
the inflation pedal is held in position 2, the pressure
limiter cycles the machine between position 2
(inflation) and position 1 (at rest, no air flow to tire).
This cycling helps to prevent over inflation of the tire.
Tires can still be over inflated and explode with the
use of this pressure limiter if all of the instructions in
this manual are not followed completely. The
pressure limiter will keep most car and light truck
tires from inflating beyond 60 PSI (smaller tires may
reach higher pressures). It is the operator's
responsibility to follow all instructions and to control
inflation pressure as specified in these instructions.
Check the function of the pressure limiter regularly
and maintain it according to the instructions
provided in this manual for safe and proper
operation. Do not tamper with or attempt to adjust
the pressure limiter. Tires requiring inflation beyond
60 PSI should be inflated in a safety cage.
Bead Sealing
1. Position valve stem in front of operator and
connect the inflation hose. Hold tire up against
upper edge of the wheel. Be sure tire’s top bead
is over the bottom of the valve stem (Figure 17).
Figure 17 - Lift Tire Upwards for Bead Sealing
COATS 50xx Series Rim Clamp Tire Changers • 7
Tire Pressure Tire Inflation Bead Sealing
Inflation Pedal Positions
CAUTION
CAUTION
CAUTION
CAUTION
DANGER