ļ 2002 by ELTRA GmbH Germany ā January 2002 ā Service Manual OH 900 / ON 900 / ONH 2000
1.21-1
1.21 The chopper motor doesn`t rotate:
In most cases the reason is that the grease of the bearings becomes dry.
You can feel a resistance when you try to turn the shaft by hand.
In this case the problem can be solved by lubricating using silicon oil.
Dip a piece of wire into a flask of silicon oil and apply as shown below.
In order to spread the oil into the space between shaft and bearings, turn the shaft and
move it in axial direction at the same time. The use of mineral oil is not suggested,
because mineral oils become dry and hard after a long time of operation. If no silicon oil is
available, use silicon spray. Silicon grease is also gut for this purpose, and it is also
available in laboratories, however, it could be very difficult for the grease to penetrate the
space between shaft and bearings.
1-19-1
Silicon oil
Silicon oil
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