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Petter m main bearings stripdown help and mag gear

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Petter m main bearings stripdown help and mag gear

Post by jcstuckinmuck on Sat Dec 20 2014, 13:42

Hi all I have a 1932 petter m with calibrator lubricator iam in the process of stripping it down, the pulley side flywheel is stuck so I ve got the flywheel of on the starting handle side and intend to take the main bearing off and then slide crank and flywheel out by not sure how to strip the main bearings, these are roller ball type,
So I got the bearing outer casing off and have large nut then a lock washer and and another nut how do I strip down from here, does the nut come off anticlockwise or clockwise or does it stay on, this is the starting handle side, also the mag gear on the crank has a chipped tooth about quarter missing ,I was thinking of welding and build up the section and then profile it and file it, as I don't have a magneto don't know if I can leave it and get away with it or can it be welded, any info would be very helpful,cheers john

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Re: Petter m main bearings stripdown help and mag gear

Post by StewartH on Wed Jan 07 2015, 16:16

Hello John,

I know its a pain but when you have been a member for a week or so you can post pictures - your discriptions are good - but a pic really helps - especially on the chipped gear - it all depends on how chipped...

I find I get a lot more answers or help after attaching pics - its because non of this lot can read of course.... Smile

best

Hamish

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Re: Petter m main bearings stripdown help and mag gear

Post by jcstuckinmuck on Sun Jan 25 2015, 13:14

Sorry been away for a bit and other commitments I do apologise Hamish but I am now back onto it , I have goy the whole engine now stripped down apart from a missing pyramid glass for the calibrator lubricator it pretty much all there, I have now got a magnet and proper drive gear now, only major issue is the frost crack which I will repair and the other is the left side main roller ball bearing is rumbling after cleaning the dried grease in it, but has no play in it, do they settle a bit with fresh grease packed in ,also here is the chipped mag gear what do you think repair and weld or do I turn it round so the drive is not pulling on the chipped side , if you know what I mean




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Re: Petter m main bearings stripdown help and mag gear

Post by jcstuckinmuck on Sun Jan 25 2015, 13:23

I just don't get it how can I get my pictures uploaded!!!!!!!!!!


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Re: Petter m main bearings stripdown help and mag gear

Post by jcstuckinmuck on Sun Jan 25 2015, 13:52






hopfuly these are the pictures

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Re: Petter m main bearings stripdown help and mag gear

Post by jcstuckinmuck on Sun Jan 25 2015, 13:53

iam not licking this picture system grrrrrrr

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Re: Petter m main bearings stripdown help and mag gear

Post by Woodsman on Sun Jan 25 2015, 16:51

Hi, I had same problem with 'Host an image'.
Try creating yourself an account on Photobucket, load the images there then click the image to get the share links top right. Click the Direct link to copy the url to clipboard then use the Insert an image your post. Hope this helps.

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finally got pics of the engine petter m

Post by jcstuckinmuck on Wed Feb 25 2015, 10:56

finally got pics of the engine petter m  and the chipped gear" />

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Re: Petter m main bearings stripdown help and mag gear

Post by blue cat on Wed Feb 25 2015, 21:05

That chipped gear will probably be OK to use as it is.

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Re: Petter m main bearings stripdown help and mag gear

Post by fowlerfan on Thu Feb 26 2015, 18:30

Looks like there will be just enough tooth surface left to be ok. I would test by fitting the mag, oiling up and turning over carefully to make sure.

I would think trying to repair or weld will be difficult and may cause further problems. Worst case you can replace the gear, crankshaft gears tend to be easier to find than the mag gears.

Cheers
Dave

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Re: Petter m main bearings stripdown help and mag gear

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