Demounting Tubeless Tires; Head Positioning - John Bean T1545 Manuel D'utilisation

18
- EN
5.1-1
5.1-2
5.1-3
5.1-4
T1545T

5.2 Demounting tubeless tires

· Remove all wheel-weights from the rim. Remove the
valve stem or core and defl ate the tire (Fig. 5.1-1).
· Break outer bead starting from opposite the valve
position. lubricate the bead and rim with a tire lube only.
Break inner bead. Do not hold the foot pedal depressed
longer than necessary since this could damage the
bead. Liberally lubricate bead and rim (Fig. 5.1-2).
WARNING!
ON CARS WITH RUN FLAT TYRES WITH THE OPTIONAL
LOW PRESSURE SENSOR INSTALLED, BREAK THE
BEAD AT 90 DEGREES OFFSET FROM THE VALVE
STEM. DAMAGE TO THE WHEEL WILL RESULT IF THE
BEAD IS BROKEN AT ANY OTHER POINT ON THE RIM.
Locking Rims
· Set the rim clamps to the proper position: retract
clamps to clamp the wheel from the inside and expand
clamps to clamp from the outside. When clamping
small wheels (14" or smaller) from the outside, set the
clamps at diameter nearly equal to the rim diameter,
before placing the wheel on the clamps. This will avoid
the risk of pinching the tire.
WARNING!
TO MINIMIZE THE RISK OF SCRATCHING ALLOY RIMS,
THESE SHOULD BE CLAMPED FROM THE OUTSIDE.
· Liberally lubricate bead and rim.
· Place the wheel WITH DROP CENTER UPWARDS
(Fig. 5.1-3) on the turntable, and clamp in position.

5.2.1 Head Positioning

Procedure:
If necessary, adjust the mounting head as described in
chapter 5.1.
· Position the mount/demount head in contact with the
rim edge and lock it into place: the tool automatically
moves away from the rim edge vertically. Turn the
adjustment knob until the mount/demount head
clears from the rim fl ange about 1/25" (1 mm): this is
necessary to avoid rim damage (Fig 5.1-4).
Note: once the mount/demount head is positioned
properly, matching wheels may be changed
without having to reset the head.
Note: the plastic insert inside the mount/demount
tool must be periodically replaced. every
machine is equipped with several plastic
inserts (inside standard equipment box).if
desired, the plastic insert may be replaced
by a steel roller also included.