12 replies to this topic

[orac69]

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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[nicklouse]

Never seen one of those before.

[Lplus]

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

 

[nicklouse]

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.

[Spider]

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.

[nicklouse]

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

[Designer]

Me too

[Spider]

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.

[orac69]

Thanks as always.  Looking at the moss part, it looks like it comes as part of the primary gear assembly, which is why i couldnt see it as a separate item.   

 

@spider - you say you wont fit a gear without one - so I need to put mine back.  You also say the ones youve seen are smooth.   The teeth in mine look like they should be there.  Do I fit it back with the teeth facing the gear, or the teeth facing the oil holes? 

[nicklouse]

I would not use that one. 

[Gaz66]

I'm sure I've seen these on strip downs before only in plastic/nylon?
But....I could of imagined this. 😁

[nicklouse]

I'm sure I've seen these on strip downs before only in plastic/nylon?
But....I could have imagined this.

Other side of the seal. 

[Spider]

The damaged side faces the gear teeth, not the seal, so it shouldn't chew up the seal. Most I've come across have been marked or 'worn' with the teeth impressing in them, these I have just fitted as they were, but with yours, yes, filing would be in order, just be careful not to distort it's shape or it won't stay put. I dab of loctite is not a bad idea here, one of the retaining compounds will do the trick.