4 •
Important: Always read and follow operating instructions.
Operating Instructions
This unit must be properly operated and properly
maintained to help avoid accidents that could injure
the operator or bystanders, or damage the unit.
This section of the Operating Instructions manual
review basic operations and use of controls. These
instructions should be reviewed with all employees
before they are allowed to work with the machine.
Keep these instructions near the machine for easy
reference.
Tire Bead Loosening and Demounting
CAUTION
This machine may operate differently from
machines you have previously operated.
Practice with a regular steel wheel and tire
combination to familiarize yourself with
the machine’s operation and function.
NOTE:
Remember to remove all weights from
both sides of the wheel. Weights left on backside
of wheel may cause the wheel to be clamped
unleveled. This may result in the combination
mount/demount tool contacting the rim causing
scratches. On alloy wheels, always rotate the
wheel one turn after setting the Duckhead mount/
demount tool to insure proper wheel clamping.
NOTE:
Always review with the owner any nicks
and scratches on expensive wheel and tire combi-
nations prior to servicing.
NOTE:
Review the performance wheel section of
this manual prior to servicing performance tire/
wheel combinations.
CAUTION
Loosening the beads on a partially or fully
inflated tire is unsafe and causes excess
movement and friction against the bumper
pads and excessive wear on pivots. Deflate
the tire completely to prolong the life of
your machine.
1.
Deflate the tire completely by removing the valve
core from the valve stem (figure 1). Be cautious and
do not smoke as a flammable gas could have been
introduced into the tire at some time.
Figure 1 - Remove Valve Core to Deflate Tire
CAUTION
Tires are always installed and removed
from the rim’s narrow side.
NOTE:
Always loosen the bead on the narrow
side of the wheel’s drop center first (tire removed
in figure 2 for clarity).
Figure 2 - Determine Narrow Side of Wheel
NOTE:
Use extra care in positioning the bead
loosener shoe on larger wheels/tires, and on alloy
wheels. Make sure the shoe rests next to but not
on the rim, and not on the tire sidewall.
2.
Actuate valve to position the bead loosener shoe
away from the machine and roll wheel into position.
The valve stem should be in the 2 o’clock position to
accommodate a possible asymmetric safety hump
type rim. Position the bead loosener shoe against
the tire next to, but not on, the rim. Actuate the bead
loosener handle to position the shoe and loosen the
bead. It may be necessary to loosen the bead in
multiple locations around the tire (figure 3).
Narrow Side
Drop Center
Long Side
