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#Post#: 40910--------------------------------------------------
p 41 flywheel
By: Bob Date: June 3, 2014, 8:36 am
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Hi cannot get the flywheel off the saw tried a puller and
tapping & prying with a hammer it will not budge. Leary of using
air tools do not to damage the crank.
Any suggestions
Thank You
#Post#: 40912--------------------------------------------------
Re: p 41 flywheel
By: Warped5 Date: June 3, 2014, 8:40 am
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Hi Bob - I'd try some penetrating oil around the crank after
installing a puller with light pressure. Come back the next day
and apply a little heat to the flywheel right around the crank
and tap the end. Be sure to use a spare nut on the crank end so
you don't booger the crank threads.
#Post#: 40913--------------------------------------------------
Re: p 41 flywheel
By: KilliansRedLeo Date: June 3, 2014, 8:42 am
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+1 on the oil and heat!
#Post#: 40914--------------------------------------------------
Re: p 41 flywheel
By: Bob Date: June 3, 2014, 8:50 am
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Thank You
I soaked with pen oil last night and left the puller on I will
try the heat today.
Thanks again
#Post#: 40915--------------------------------------------------
Re: p 41 flywheel
By: fossil Date: June 3, 2014, 9:03 am
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Those are well known to stick. I had a heck of a time with mine.
I left the puller on under tension for about two weeks and it
popped right off with a smack.
#Post#: 40916--------------------------------------------------
Re: p 41 flywheel
By: KilliansRedLeo Date: June 3, 2014, 10:36 am
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Don't remember how long it took me to get the last P-41 I did
took me but I had to resort to some heat. I had the same sort of
problem with a 3120XP ended up using 50/50 mix of ATF and
acetone, puller and heat to get the bugger off!
#Post#: 40934--------------------------------------------------
Re: p 41 flywheel
By: Bob Date: June 3, 2014, 8:47 pm
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Thanks for the tips everyone, finally decided to use the air
wrench on the puller and it popped off. However I may have put
the rings on the piston up side down not paying attention does
it matter if the notch in the rings were it rest against the pin
is facing up or down?
The circlips have a 90 degree bend were the opening is it ok
that it faces toward the cylinder wall?
Thank you
#Post#: 40940--------------------------------------------------
Re: p 41 flywheel
By: KilliansRedLeo Date: June 4, 2014, 6:06 am
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The rings MUST be aligned correctly with the locating pin! Most
pistons have the locating pin toward the top of the ring groove.
The ring must be put on such that the rounded cutout on either
end of the ring is aligned with the locating pin.
Not getting what you are saying about the circlip however
Nothing should protrude outside the piston toward the cylinder
wall. There is a groove inside the piston pin boss where the
circlip goes, position the opening in the clip at the 12 or 6
o'clock position.
Here is an article on how to do the clips, is for a motorcycle
engine but the process is the same
HTML http://juicemotoparts.com/bearings
HTML http://juicemotoparts.com/bearings
#Post#: 40967--------------------------------------------------
Re: p 41 flywheel
By: Bob Date: June 4, 2014, 8:06 pm
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Thank you, here are some images of the ring & circlip.
With regards to the ring the notch in the end by the opening of
the ring that goes on the piston pin does it face towards the
top of the piston or towards the bottom of the piston or does it
matter?
The circlips with the prongs were it is open I assume the prongs
face outward towards the cylinder wall?
Sorry for the confusion hope this helps.
Thanks
#Post#: 40981--------------------------------------------------
Re: p 41 flywheel
By: KilliansRedLeo Date: June 5, 2014, 5:59 am
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There is a very small pin in the ring groove of the piston this
in the locating pin for the piston ring.
The locating pin is most often mounted close to the top of the
groove but could also be at the bottom.
The little rounded notch in the end of the ring faces which ever
side of the groove the locating pin is on.
When the ring is compressed into the groove the notch will wrap
round the locating pin.
I don't think you are getting what I told you about the clips.
If you look closely at your piston, where the piston pin goes.
You will see a groove machined into the piston, this is where
the clip goes. No part of the clip should be outside the body of
the piston!
Look at the attached picture
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