ATH-Heinl M72, Operating Instructions Manual, Page: 60 / 386

® Copyright ATH-Heinl GmbH & Co. KG, All rights reserved / Misprints and technical changes reserved / As of: 2020-03
Manufacturer ATH-Heinl GmbH & CO.KG
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1.3.5 Disassembling a tyre
In principle, the guidelines of the German Rubber Industry Trade Association
(Wirtschaftsverband der deutschen Kautschukindustrie) should be observed when
disassembling tyres.
Turn and/or set the stretched wheel so that the wheel valve is
approx. 10 cm in front of the assembly head
Press the tyre bead down against the opposite side of the
assembly head.
Then lever the tyre over the assembly head using the assembly
iron. During levering, the tyre moves into the drop-centre of the
wheel rim and facilitates simple and damage-free assembly.
In order to make it easier to lift the bead and to protect the
wheel, position the bead pusher opposite the assembly head.
Press the bead in 3, 6 and 12 o’clock position up to the first
wheel rim depression, ensuring that the tyre is not compressed
whilst doing so.
Press down the gear change pedal for the rotational motion of
the clamping plate so the rotational motion starts clockwise.
Whilst doing so, continue to hold the assembly iron on the bar of
the assembly head by pressing the iron against the assembly
head.
As soon as approx. 1/3 of the tyre bead has passed the rim
flange, there should be enough room to remove the assembly
iron.
Continue with the rotational motion until the whole tyre is above
the rim flange.
When working with tubular tyres, the tube should now be
removed from the tyre.