COATS Extended Mobility (EMT) RunFlat Tires - Manual (Page 18)

E–2 Demounting–Valve-Type Sensor
5 Continue to pull the lift bar down and lift the tire bead
onto the duckhead. Pull the tool down slowly to allow the
tire bead to move into position without damaging the bead.
6 Once the upper bead is in position on the duckhead,
carefully remove the lift bar.
NOTE: Leaving the lift bar in place increases the arc of the
tire bead over the duckhead, thereby increasing the resist-
ance. Removing the tool lessens the resistance and helps
prevent damage to the bead.
7 Begin removing the bead by rotating the wheel a short
distance–3 to 4 inches only–and stopping. Allow the
bead and sidewall to relax. Rotate the wheel again for a
short distance then stop to allow the tire to relax. Continue in
this manner until the upper bead is free of the wheel.
8 To remove the lower bead, begin by rotating the wheel
until the sensor/valve stem is once again under the rear
portion of the duck head. Lift the tire and carefully guide the
lower bead into position above the sensor.
NOTE: Positioning the sensor under the duckhead allows the
tire bead to slide into the drop center on the opposite side of
the wheel without interference.
9 Use the lift bar to lift the lower bead over the duck head.
Begin rotating the wheel very slowly, using the lift bar to
help keep the lower bead above the wheel.
NOTE: It may be advisable to place a shop rag between the
lift bar and the wheel to prevent damaging the wheel sur-
face.
10 Continue rotating the wheel very slowly until the
lower bead is free of the wheel. Use the lift bar to help
keep the demounted bead above the wheel.
This completes Section E
.
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