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#Post#: 26201--------------------------------------------------
Stihl Crank Bearing Tool
By: davbell22602 Date: October 26, 2013, 6:57 pm
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What are you guys using for removal and installation of the
crank bearings instead of the 1118-893-7200? Old socket? Piece
of wood?
#Post#: 26210--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: Chainsawrepair Date: October 26, 2013, 8:22 pm
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I either use heat on case with frozen bearing and socket if
needed. No heat way Art showed us here, socket and press in
with vise.
Threads on subject somewhere. Try the search and see if you find
anything.
#Post#: 26276--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: Al Smith Date: October 27, 2013, 5:34 pm
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I use the freezer ,heat method also .Fact being it's the method
Stihl recomends right in the service manuals .
#Post#: 26307--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: KilliansRedLeo Date: October 28, 2013, 12:19 pm
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+1 on the factory method. Some folks on another site do it
completely wrong, by forcing the bearings onto the crank and
then forcing the crank into the cases.......WRONG! Bearings are
an interference fit into the case and crank should be pulled
into the bearing by using factory tools.
Just a pet peeve of mine, factory would not waste time telling
you exactly how to do it and making special tools if there was
not a good reason to do it their way!
#Post#: 26310--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: 660magnum Date: October 28, 2013, 12:59 pm
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I've put bearings in a awful lot of small engines over the years
and I've done it all ways. But to force one with a interference
fit often caused spots on the balls and races and the bearing
job would turn bad.
I never had any trouble with the hot and cold method like Al is
talking about. So simple and no fuss.
#Post#: 26316--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: davbell22602 Date: October 28, 2013, 1:53 pm
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So do you heat the cases to get the old ones out?
#Post#: 26320--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: 660magnum Date: October 28, 2013, 2:53 pm
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Yes, warm them up and bump against a board and the bearing will
fall out.
#Post#: 26321--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: KilliansRedLeo Date: October 28, 2013, 2:54 pm
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The day before you want to put in new bearings, put them in the
freezer. Next day remove all plastic rubber and chainsaw goop
from the cases. Preheat your wife's oven to 150-200°C (do this
when she is not home) otherwise you won't get any for a month!
Put the cases in for 20-30mins. Get a block of wood and remove
the case halves one-at-a-time from the oven and tap them on the
wood, the bearings will drop out, so too will the seals. Put the
case halves back in the oven, get your bearings out of the
freezer, take one case half out of the oven, set the bearing in
the case and tap it on the block to seat the bearing. Set aside
to cool.
#Post#: 26322--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: KilliansRedLeo Date: October 28, 2013, 2:57 pm
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[quote author=660magnum link=topic=2439.msg26320#msg26320
date=1382989986]
Yes, warm them up and bump against a board and the bearing will
fall out.
[/quote]
660, you have a Stihl avatar but you sound like you wee trained
by the Husqvarna factory as was I!
#Post#: 26323--------------------------------------------------
Re: Stihl Crank Bearing Tool
By: 660magnum Date: October 28, 2013, 3:00 pm
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Model airplane engines - Including the Dolmars, Red Max's
(Zenoah), & Echo's.
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