Use The Bead Presser As A Demounting Help Device - John Bean EHP System III-E Operator's Manual

4.1.1-1
4.1.1-2
4.1.1-3
4.1.1-4
4.1.1-5
28
4.1.1 Use the bead presser as a demounting
help device.
A. In order to make the locking of hard or lowered tires
easier, the operator can use the rim pusher provided
with the bead pusher. Apply the rim pusher (Item 1,
Fig.4.1.1-1) on the bead pusher tool (Item 2), position
it at the centre of the rim (Fig.4.1.1-1) and low the rim
as far as the clamps can lock the rim (Fig.4.1.1-2).
B. Position the roller approx. 2 cm (3/4") from the rim
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edge. Press down the sidewall of the tyre to ease the
introduction of the tyre bar (Fig. 4.1.1-3). Move the
roller to rest position.
To facilitate the lift of the bead on the head tool, position
the lower disk next to the edge of the lower rim edge,
hold fi rmly the arm of the disk and start the lifting of
the device (Fig.4.1.1-4).
Demount the fi rst bead as described in the tyre changer
operator's manual.
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C. Position the lower disk next to the lower rim edge.
Hold fi rmly the handle, and at the same time rotate the
turntable (Fig. 4.1.1-5). This operation allows loosening
the bead if this is stuck and helps lifting the tyre.
NOTE: A certain effort on the handle of the
lower disk in radial direction is normal
to counter-balance the action of the
turntable that pushes the disk off the
center when rotating.
THE LOWER DISK DEVICE CANNOT BE LOCKED
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BECAUSE OF SAFETY REASONS.
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