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Primary Gear Ring Id


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#1 orac69

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Posted Yesterday, 08:03 AM

Hi, continuing my rebuild of a '78 998, just about to mate the block and gearbox and was checking the primary gear endfloat.

I got the engine and box already stripped down with buckets of bits.

On my primary gear was a ring with small teeth on it. It looks like it should go up against the primary gear teeth, where the oil holes go perhaps, but having consulted Haynes, videos and part lists I can't see it anywhere....

Should it go on? It's tight so will need a light drift to get it on, but why is it there?

Thanks.

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#2 nicklouse

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Posted Yesterday, 08:08 AM

Never seen one of those before.



#3 Lplus

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Posted Yesterday, 08:49 AM

Hi, continuing my rebuild of a '78 998, just about to mate the block and gearbox and was checking the primary gear endfloat.

I got the engine and box already stripped down with buckets of bits.

On my primary gear was a ring with small teeth on it. It looks like it should go up against the primary gear teeth, where the oil holes go perhaps, but having consulted Haynes, videos and part lists I can't see it anywhere....

Should it go on? It's tight so will need a light drift to get it on, but why is it there?

Thanks.

It's an oil slinger, intended to keep oil away from the clutch housing oil seal.  It should go up against the teeth leaving the oil holes visible.  I suspect it's one of those good ideas later discarded as unnecessary on later models

 

see here https://www.moss-eur...93?gad_source=1

 



#4 nicklouse

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Posted Yesterday, 09:19 AM



Never seen one of those before.

Just to add to this all the ones I have seen, if the oil flinger, are like this old one. Smooth on the inside.

f6p6QVF.jpg



#5 Spider

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Posted Yesterday, 09:43 AM

The early gears didn't have them, but about 1964 they were introduced and used to the end of production.

Some of the latest after market gears don't have them. I won't fit a gear without one.

Yours has the teeth marks in to because at some point, most likely, an Idler gear bearing let go.



#6 nicklouse

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Posted Yesterday, 09:51 AM

To me, must be the photo, they look raised.



#7 Designer

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Posted Yesterday, 01:27 PM

Me too



#8 Spider

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Posted Yesterday, 07:13 PM

To me, must be the photo, they look raised.

 

 

Me too

 

Yes, me too and that's not unusual from the type of damage I've referred to. It wont affect how it works though.






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