Specifications

TC3500 Operation Instructions 3. Advanced Procedures • 27
Cylindrical Rims/Bead Loosening and Demounting Lower Bead
WARNING: When demounting the lower bead on rims with a small
drop center where section A is long and cylindrical,
rolling up the bead with the lower bead roller can cause
damage if not operated properly.
Lock the upper roller against top bead.
Place and lock the lower roller against the lower bead.
Rotate wheel and loosen bottom bead from rim.
Lubricate tire and rim thoroughly.
Retract lower roller.
Rotate wheel and loosen the upper bead from the rim.
Lubricate upper bead rim drop center and barrel if possible.
Retract upper roller.
Demount upper bead.
Bring the lower bead roller up until it contacts the tire.
Lock the lower roller and push the lower sidewall of the tire up while rotating.
Continue rotating wheel until the lower bead has been lifted.
CAUTION: On repeated attempts to roll the lower bead up the rim,
never readjust the rim diameter from initial setting to prevent
damage to rim.
3.3 Advanced Mounting Procedures
Always be aware of this “checklist” when mounting tires to ensure proper service.
There are four steps when mounting a tire to a rim:
• Position the bead on top of the left lip of mount/demount head.
• Position the bead under the right lip of the mount/demount head.
• Lock the rim to the tire.
• Slip the bead into the drop center.
These four basic steps to mounting do not necessarily follow the same sequence,
however all four steps need to be performed to properly mount a tire to a rim.