Metal Seal on Crank

mcdammitt · Mar 22, 2014

I am having a time trying to figure out this metal seal between the crankcase timing chest. When I took it out to do a look over, I bent it. I tried to round it back out and reinstall after replacing the main bearings. It looks like this metal seal should rotate with the crank, is this correct? Mine is hanging up in the cavity it sits in. Am I correct in thinking that I need to work on this piece so it doesn't hang up?
Thanks for the help
Scott
616-334-0587

toppy · Mar 22, 2014

For peace of mind an to save messing about just buy a new one. They dont cost much.

mcdammitt · Mar 22, 2014

I guess my main question is, Is it suppose to spin with the crank?

comnoz · Mar 22, 2014

mcdammitt said:
I guess my main question is, Is it suppose to spin with the crank?

Yes, it needs to spin with the crank. When the worm gear is tightened it will be pinched between the pinion gear and the bearing holding it solid to the crank.
I would also suggest replacing it if it has damage. It needs to be a very close fit in the aluminum case to do it's job but if it touches the case because it is bent, it will cause damage. Jim

olChris · Mar 22, 2014

Oh, thats odd.. Just closed up bottom end yesterday.. Was a bit of a mystery to me also but i did notice "Sealant/Glue" around its perimeter of metal seal, so i replaced as such and was a mild press fit with sealant... fitted worm drive at rest of stuff and could rotate "easily" as per friction of crank and big end bearing oiled up.. No hint of binding from the metal seal washer binding,, So no what do i do :? :? :? :?

comnoz · Mar 23, 2014

olChris said:
Oh, thats odd.. Just closed up bottom end yesterday.. Was a bit of a mystery to me also but i did notice "Sealant/Glue" around its perimeter of metal seal, so i replaced as such and was a mild press fit with sealant... fitted worm drive at rest of stuff and could rotate "easily" as per friction of crank and big end bearing oiled up.. No hint of binding from the metal seal washer binding,, So no what do i do :? :? :? :?

If you have all the parts on there the seal washer should be pinched tight when you tighten the worm gear.
First is the bearing.
Then the seal washer.
Then the thick washer with three flats on the circumference.
Then the pinion gear with the key installed under it.
Then the worm gear is screwed on and torqued to hold the stack of parts tightly against the crank. Jim

olChris · Mar 23, 2014

Well I took the cover off and could see that the metal seal does rotate with the crank, even though i use Gasket Goo on it. I has been "pinched" with the worm drive as rotates as you say Jim, thanks for the info. So will pull those few bit out and clean up Gasket Goo and replace..

NORBECER · Mar 24, 2014

As per Mick Hemmings : Behind the triangular plate is the dish washer, it should spin freely, he makes a point to check it for any burs. Shown here pulling it away with a magnet.

[ATTACH=full]54943[/ATTACH]

mcdammitt · Mar 25, 2014

Thank you ConNoz

mcdammitt · Mar 25, 2014

Sorry, Comnoz

Metal Seal on Crank

mcdammitt

toppy

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olChris

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