COATS Extended Mobility (EMT) RunFlat Tires - Manual (Page 21)

The Objective of this Section:
To demonstrate the safe and proper mounting of exceptionally stiff sidewall tires on wheels with
a valve-type low-pressure sensors installed. To demonstrate the use of a metal duckhead.
Safety Issues Related to this Section:
• ALWAYS wear eye protection during tire service activity.
• ALWAYS wear durable work clothing (i.e.; tight-fitting leather gloves, steel-toed shoes, back belts).
• NEVER wear loose fitting clothing or articles, jewelry, or long hair.
1 Clean and polish the wheel. Check for any burrs or dam-
age to the wheel that might damage the tire during the
mounting process. Stiff sidewall tires of this type are excep-
tionally snug-fitting, and a clean, polished surface will
reduce friction and aid in the mounting and bead seating
process.
NOTE: Always clamp the wheel externally. This prevents the
wheel from moving upwards during the mounting process.
2 Lubricate the entire surface of the wheel liberally with a
slow-drying lubricant. Pay special attention to the bead
seat area, the safety humps, and the drop center.
3 Lubricate the lower tire bead.
NOTE: Pay strict attention to any specific tire location infor-
mation on the wheel. The tire may have been marked earlier
with a location and/or rotation direction. The imprinting on
the tire sidewall may also give you specific location and
directional information. Remember that the low-pressure
sensor may also be location specific. Make sure you are
mounting the correct tire on the correct wheel.
4 Rotate the tabletop so that the valve stem and pressure
sensor are at the 6 o’clock position.
5 Position the tire over the wheel, with the lower bead
resting on the back of the duckhead. Position the duck-
head so that it is 1 ⁄
8
to 3 ⁄
16
inch away from the wheel.
Remember to use the plastic bootie on metal duckheads.
Hold the tire down with the lower bead in the drop center
and rotate the wheel slowly. The lower bead should be
eased over the wheel slowly and carefully, giving the side-
wall time to relax. Hold the tire so that the bead stays in the
drop center.
Mounting–Valve-Type Sensor G–1
10
min
Stop Time
G