E: Engine Series B Meteor timing cover - engraved name and oil seals

CoreyL

CoreyL

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My Meteor was having charging issues. So I removed the timing cover to enable me to remove the Miller dynamo.

An observation: Inside the cover the name "Kavanagh" was engraved. I believe Sid bought the bike from a gentleman named Richard Adams in the early '90s. Maybe Kavanagh was a previous owner?

My question: I assume that whenever the timing cover is removed the two oil seals are replaced. Is that correct? I also assume it's prudent to replace the dynamo oil seal while I have access. Finally, is there a torque spec for the nut that retains the dynamo pinion?
 

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C

Comet Rider

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Hi Corey,
As a fellow Comet owner I would say yes to replacing the rubber seals, and I always carry a couple of spares in my travel kit. In an emergency you can turn them over if you ever have the need to strip the timing chest at the road side
With regard to the dynamo seal, it might be prudent to change it as you do not know when it went in, but be aware that as you adjust the backlash on the dynamo pinion it will distort the seal as the backlash is set by rotating the dynamo.

HTH
Neil
 
S

shortun

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Comet Rider said:
Hi Corey,
As a fellow Comet owner I would say yes to replacing the rubber seals, and I always carry a couple of spares in my travel kit. In an emergency you can turn them over if you ever have the need to strip the timing chest at the road side
With regard to the dynamo seal, it might be prudent to change it as you do not know when it went in, but be aware that as you adjust the backlash on the dynamo pinion it will distort the seal as the backlash is set by rotating the dynamo.

HTH
Neil
Click to expand...
CoreyL said:
My Meteor was having charging issues. So I removed the timing cover to enable me to remove the Miller dynamo.

An observation: Inside the cover the name "Kavanagh" was engraved. I believe Sid bought the bike from a gentleman named Richard Adams in the early '90s. Maybe Kavanagh was a previous owner?

My question: I assume that whenever the timing cover is removed the two oil seals are replaced. Is that correct? I also assume it's prudent to replace the dynamo oil seal while I have access. Finally, is there a torque spec for the nut that retains the dynamo pinion?
Click to expand...
In a Comet timing cover I removed there was a restricter disc fitted where one of the rubber seals go , but I can't see one fitted to your cover are they required now or not ?
 
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clevtrev

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Comet Rider said:
Hi Corey,
As a fellow Comet owner I would say yes to replacing the rubber seals, and I always carry a couple of spares in my travel kit. In an emergency you can turn them over if you ever have the need to strip the timing chest at the road side
With regard to the dynamo seal, it might be prudent to change it as you do not know when it went in, but be aware that as you adjust the backlash on the dynamo pinion it will distort the seal as the backlash is set by rotating the dynamo.

HTH
Neil
Click to expand...
Which is why when you build a Comet, the first component installed is the dynamo, this to ensure that it is central to the seal. All adjustment is done with the large idler and half time pinion.
 
vibrac

vibrac

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The 2020 comet crankcase (and many parts) has had a heavy racing life and the dynamo seal and most of the housing wall was removed and a circular bung fitted to seal the entire recess.
On fitting the walkernator dummy pulley I made sure I had a good face at the end of the recess positioned the pulley for engagement in the idler (a better setting than worry about centralizing an oil seal) marked it then withdrew it, slapped in the silicone,. pushed it home wiped off the excess.
anyway with the walkernator adjuster it wont need to be moved again.
 
Cyborg

Cyborg

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clevtrev said:
Which is why when you build a Comet, the first component installed is the dynamo, this to ensure that it is central to the seal. All adjustment is done with the large idler and half time pinion.
Click to expand...

Thanks for that and perfect timing. I was wondering how it should be approached. It didn't make sense to set everything else up first and then distort the seal.
 
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