10 Instruction manual ICON
4 Servicing
Before starting any servicing work, disconnect the handpiece from the shearing drive.
4.1 Cleaning
After shearing, remove all oil from the machine by rubbing it down with a dry cloth and
carefully clean the outside of the shearing handpiece and the shearing blades with a dry brush.
Then oil the parts to prevent rusting. Even the smallest rust spots on the blades can adversely
affect shearing or make it completely impossible.
4.2 Fitting the Shearing Blades
A pair of shearing blades consist of a comb plate (Illustration 5, Item 2) and an cutter
(Illustration 5, Item 1). When fitting the blades care should be taken to ensure that the correct
surfaces come to rest against each other. The blades are fitted as follows:
Loosen the tension nut (Illustration 3) and place the machine on a hard surface so that the
comb blade fixing screws lie uppermost. Slacken off the screws (Illustration 6) and remove
both the old shearing blades.
Ensure that the new shearing blades are clean. Particular care should be taken to ensure that
thegroundsurfacearefreeofdirt;ifnot,evennewlygroundshearingbladeswillnotshear
satisfactorily.
Place the new cutter in the yoke’s carrier (chicken feet) cones (Illustration 7 and 2, Item 2) and
push the new comb plate between the loosened screws (Illustration 8). Now tighten the comb
blade fixing screws until you can just move the new comb plate sideways by hand.
Now turn the machine over so that the tension nut is against uppermost.
What is now important is that you rest the blades against each other in such a way that the
ground surface of the comb plate projects approx. 1.5 - 2.0 mm beyond the tips of the cutter
(Illustration 9) at the same time all sharp corners of the cutter indicated at (c) must be within
the indicated area (b)
Once you have adjusted the shearing blades, set the position of the comb plate and tighten up
the comb blade fixing screws.
Check that the shearing blades have been correctly fitted and that the pressure yoke’s carrier
(chicken feet) cones (Illustration 2, Item 2) are situated in the holes provided in the cutter. Now
tighten up the tension nut until the cutter is pressed against the comb plate and you can feel
a slight resistance.
4.3 Resharpening the Shearing Blades
Only work with sharp shearing blades. Replace blunt blades or those with missing teeth.
Proper resharpening can only be done with a special shearing blade grinder and by a trained
technician or experienced Shearer. For correct shearing blade grinding technique, please
follow the instructions which comes with every Heiniger shearing blade grinder.
Illustr. 5, 3, 6
Illustr. 2, 7, 8
Illustr. 9, 2
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