Heiniger ICON Bedienungsanleitung Seite 34

• The bearings in your handpiece are small and the balls in them are delicate, each time you
go to hit the bearing "think first" . The force must never travel through the balls i.e.: if you
are fitting the outer bearing into a casing (Illustration 12, Item 1) hit the outer rim only, not
the seal or the inner rim. And when fitting the bearing onto a shaft (Illustration 12, Item 2)
hit the inner rim only. If you do hit the wrong rim, or the seal, it will distort the balls, do not
use this bearing anymore, throw it away as it will run hot and wear rapidly.
Illustr. 12
• Do not clamp the barrel in a vice.
• Use (replace) all the parts contained in the bearing kit.
• Never re-use old bearings. T he bearings will have been damaged during removal.
• Do not use a steel hammer as this will jar and damage the tool and the bearing, use a nylon
hammer or a piece of wood.
• Use a Special T ool Kit (Illustration 11) they are not expensive and will last a life time.
• Use a small piece of hard wood to work on as a bench.
• Make sure you know the difference between the distance washer and the wave washer. The
Illustr. 11
wave washer is wobbly, the distance washer is flat.
Replace Bearings „Step by Step"
• Remove fork.
• Remove both cogs.
• Remove back joint spring and caps. T he back half joint will now come apart.
• Remove the inner back half joint from the barrel.
• Remove the circlip using the circlip pliers.
• Clean the circlip groove thoroughly (this is important).
• Place the punch (tool no. C; Illustration 11) through the front of the barrel (Illustration 13)
and onto the recess in the middle of the crankhead. Holding the barrel and punch in one
hand gently knock the crank shaft free from the barrel. The bush, wave washer and front
Illustr. 11+ 13
bearing will come with it. Don't allow the bush or the crank shaft to hit the floor as damage
may occur.
• Remove the pin or worm drive.
• Slide the punch down where the pin or worm drive was removed, holding the outer back
half joint (Illustration 19) in one hand gently knock out the old bearing and clean the back
half joint thoroughly.
• Place outer back half joint ferrule thread down onto the piece of wood and select
one of the smaller of the three bearings (Illustration 20), tap it gently into position
using tool no. A.
Illustr. 19+20
• Remove inner back half joint bearing with the punch coming from the crank shaft head end
(Illustration 19), holding the inner half back joint with one hand gently knock out the old
bearing and clean the inner back half joint thoroughly.
• Place the front of the inner back half joint on the piece of wood and gently tap the smallest
of the two remaining bearing (Illustration 20) into position using tool no. A.
• Remove front bearing (Illustration 14), put the small end of tool no. D onto the piece of
wood, place the crank head inside the big end, the distance washer will now rest on the tool.
Illustr. 14
Screw the thread inside tool no. B onto the crank shaft making the crank shaft twice as long,
hit the tool until the bearing is free of its seating, unscrew the tool and remove the bearing
and the distance washer.
Instruction manual ICON 17