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General Category => General Discussion => Topic started by: lazlokovacs on June 09, 2019, 11:19:47 AM

Title: rear flange out - crankcase damaged
Post by: lazlokovacs on June 09, 2019, 11:19:47 AM
Calvin 1100 engine

rear main flange recently out

was flipp-------ing tight in there

factory tool couldnt move it, so pressed it out

made quite a -pop- when it let go

now there is a nasty nick/scratch on the crankcase (maybe it was always there?) 

about to rebuild the engine, should I worry??

thanks to all as usual    :thumb:





(https://i909.photobucket.com/albums/ac295/lazzlokovacs/IMG-2272_zpspiswyltk.jpg) (https://s909.photobucket.com/user/lazzlokovacs/media/IMG-2272_zpspiswyltk.jpg.html)

(https://i909.photobucket.com/albums/ac295/lazzlokovacs/IMG-2273_zpsdrmqbcn5.jpg) (https://s909.photobucket.com/user/lazzlokovacs/media/IMG-2273_zpsdrmqbcn5.jpg.html)
Title: Re: rear flange out - crankcase damaged
Post by: Gusable on June 09, 2019, 11:32:28 AM
Pookey.  Permatex ultra black
Title: Re: rear flange out - crankcase damaged
Post by: Rolf Halvorsen on June 09, 2019, 12:09:14 PM
No problem. The damaged has no function. You seal the rear crank bearing with a paper gasket.
Title: Re: rear flange out - crankcase damaged
Post by: Sasquatch Jim on June 09, 2019, 12:46:15 PM
 Yes , go ahead and worry.
Title: Re: rear flange out - crankcase damaged
Post by: Antietam Classic Cycle on June 09, 2019, 01:05:39 PM
Check for a burr on the main bearing that could have caused this, carefully remove if there is one. Carefully remove any burr on the case that may make it harder to insert the main bearing or that might interfere with gasket sealing.

It might help if you can warm the case and chill the bearing before assembly.
Title: Re: rear flange out - crankcase damaged
Post by: Chuck in Indiana on June 09, 2019, 02:08:51 PM
It looks like a burr or maybe a machining chip was on the bearing carrier. I'd file it off, measure both if you have the capability, and don't worry, be happy.  :smiley:
Title: Re: rear flange out - crankcase damaged
Post by: lazlokovacs on June 09, 2019, 04:07:38 PM
thanks guys as ever!

while I'm at it, anyone got a good trick for getting that gasket off???
Title: Re: rear flange out - crankcase damaged
Post by: Antietam Classic Cycle on June 09, 2019, 04:17:46 PM
thanks guys as ever!

while I'm at it, anyone got a good trick for getting that gasket off???

This works as well as the purpose made gasket remover:
(http://www.kleanstrip.com/images/made/uploads/products/EAR322_KSA-ArPntRmvr_150dpi_300_300_80.jpg)

If the gasket is really stuck on, I've found that using a heat gun to make it soft makes it easier to remove.
Title: Re: rear flange out - crankcase damaged
Post by: pete mcgee on June 09, 2019, 05:42:14 PM
thanks guys as ever!

while I'm at it, anyone got a good trick for getting that gasket off???
Patience, elbow grease and a sharp one sided razor blade.
Title: Re: rear flange out - crankcase damaged
Post by: swooshdave on June 09, 2019, 05:56:25 PM
Patience, elbow grease and a sharp one sided razor blade.

I tend to nick the aluminum with a razor blade. I use a scotchbrite pad.
Title: Re: rear flange out - crankcase damaged
Post by: pete roper on June 09, 2019, 06:30:17 PM
I have a Toyota gasket scraper. It's brilliant! Best scraper I've ever used. Really.

As for the mark on the case? I wouldn't worry unduly. Use a thin smear of threebond on the new gasket and it will seal it just fine. DO NOT squeeze it on like toothpaste!

Pete
Title: Re: rear flange out - crankcase damaged
Post by: wirespokes on June 09, 2019, 07:17:29 PM
Pete - I just searched for Toyota gasket scraper and came up with ordinary scrapers and some sort of crankshaft oil scraper gasket. No Toyota gasket scrapers.

Will they know what i'm asking for at the Toyota parts desk?

Could you post a foto of this thing?
Title: Re: rear flange out - crankcase damaged
Post by: acogoff on June 09, 2019, 07:27:04 PM
     Never used them but there is such a thing as a plastic razor blade.

  https://www.amazon.com/Plastic-Double-Edged-Razor-Scraper/dp/B004623NU2
Title: Re: rear flange out - crankcase damaged
Post by: rschrum on June 09, 2019, 08:09:33 PM
Sharp wood chisel, best I've used. 
Title: Re: rear flange out - crankcase damaged
Post by: pete roper on June 09, 2019, 10:43:06 PM
Pete - I just searched for Toyota gasket scraper and came up with ordinary scrapers and some sort of crankshaft oil scraper gasket. No Toyota gasket scrapers.

Will they know what i'm asking for at the Toyota parts desk?

Could you post a foto of this thing?

Wait until tomorrow, (It's a public holiday here today and I can't be arsed going to the workshop.) and I'll give you a pic and a part number! :grin: :thumb:
Title: Re: rear flange out - crankcase damaged
Post by: dguzzi on June 10, 2019, 12:38:44 PM
Beryllium scraper....  Likely Beryllium/copper... But its overkill.