(10) Bead Sealing
1. Position valve stem in front of operator and connect the in-
flation hose with the clip-on chuck. Hold tire up against upper
edge of the wheel. Be sure tire’s top bead does not cover the
bottom of the valve stem (figure 19).
Figure 19 - Lift Tire Upwards for Bead Sealing
2. Depress inflation pedal to position 2 and hold about one
second to begin air flow through tire valve, then depress
pedal to position 3 and hold briefly — less than one full
second. The blast of air from the jets will expand tire and
seal the beads.
3. Release the inflation pedal and allow it to return to posi-
tion 1. Verify that both beads are completely sealed to the
wheel. Repeat these steps if beads have not sealed. It may
be necessary to wait a few seconds for the air storage tank
pressure to recover before attempting again.
1. Once tire pressure is indicated on the air gauge (inflation
pedal in position 1; foot removed from pedal), continue to
inject air into the tire (inflation pedal position 2) in short
intervals. Check the pressure frequently. Stand back during
bead seat. Keep hands, arms, and entire body away from tire
during this procedure (figure 20). Tire beads should move
outward and “pop” into their bead seat position as pressure
inside the tire increases. If this does not happen, a problem
exists. Investigate carefully.
Use of bead sealing jets without a tire in place can cause
dirt and debris to be blown into the air with enough force
to injure operator and/or bystander. Do not use the bead
sealing control position to inflate a tire.
S.
This 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 airflow to tire). This cycling helps to prevent over infla-
tion 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 lim-
iter 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 infla-
tion beyond 60 PSI should be inflated in a safety cage.
T.
If tire and wheel are properly lubricated and operator
cannot achieve bead seal after three or four attempts, the
valve core may be removed from the valve stem to allow
more air flow into the tire to assist with bead seal. After
bead seal is achieved, remove the clip-on chuck and rein-
stall the valve core. Reattach the clip-on chuck after core
is installed.
Figure 20 - Stand Back during Bead Seat
