COATS ProGuard Leverless Plus Tire Changer - Manual (Page 24)

Operation Manual - COATS PRO GUARD PLUS - 24
Fase 3
Keep the bead-loosening unit set up as for upper bead release: the lower roller is always aligned with the upper one,
at 5 mm distance from rim lower border already.
Lift the lower roller until it touches the lower bead using controls 13
for lifting and 12 for lowering.
Start spinning the wheel anticlockwise by pressing pedal 2.
- While spinning the wheel, push the lower roller up over the edge of
the rim, then press and hold down the “over-stroke” function button 5
going on lifting the roller until the bead detaches from the rim.
- As soon as enough space is available, grease both inner surface of
the rim and tire bead carefully with a proper tire lubricating paste.
Note: for a better control of the lower bead loosening
please refer to the dedicated mirror fi tted onto
the tire changer main frame.
17.2_Lower bead loosening
Avoid contact between the lubricating paste and the valve sensor, if any.
- Once the bead gets loosened, raise and move away the upper roller by acting on button 10.
Fase 2
- Spin the center-plate until the valve reaches position
at “3 o’clock” position.
- Lower the bead loosening roller until it touches the tire
using controls 10 for lifting and 11 for lowering.
- Start spinning anticlockwise pressing pedal 2.
Note: the center-plate can spin at 2 different speeds, according to
operator’s preferences
- While spinning the wheel, push the bead loosening upper roller down
under the edge of the rim, then press and hold down the “over-stroke”
function button 5 going on lowering the roller until the bead detaches
from the rim.
- As soon as enough space is available, grease both inner surface
of the rim and tire bead carefully with a proper tire lubricating paste.
Pay attention to the valve sensor position during bead loosening steps.
Wrong movements of the upper roller could damage the sensor.
Avoid contact between the lubricating paste and the valve sensor, if any.
Press on the bead – never on the sidewall of the tire while loosening the bead.