COATS HIT 6000 Truck Tire Changer - Manual (Page 12)

10 • COATS Heavy Duty Tire Changer
Special Instructions for “Duplex” or “Super
Single” Tires
Wheel Preparation: Remove valve core and allow tire
to deflate completely. Remove all wheel weights.
1. Adjust Bead Loosener Shoes: For tire width of 10"
and over, one or both bead loosening shoes should be
adjusted.
2. Position tire and loosen beads as explained in the
bead loosening section.
3. Clamping: Due to the stiff sidewall, it may be
necessary to push down on the rim at the top as the
clamps are being closed, to engage the rim. Lowering
the table slightly will let the wheel’s weight help in
clamping.
4. Lubricate tire beads and rim flange thoroughly: It
may be easier to lubricate the top bead by letting the
mount/demount tool push down on the bead and then
rotating the tool with the lube swab following the tool.
Demount the top bead in the usual manner). See sec-
tion one.
5. Position Tire: It will be necessary to get the bottom
bead into drop center by raising the working table to
almost vertical (do not allow the tire to touch floor). Pull
out on tire as shown until bottom bead moves into drop
center. Then raise working table until tire rests on floor
to hold it in drop center.
6. Insert Bead Lifter: With bottom bead in drop center
and tire resting on the floor, rotate tool to 9 o’clock posi-
tion and insert bead lifter under bottom bead just below
the tool head.