oil dripping out of top of primary

Do not use sealant at all when you use a new rubber, in 47 years I have never used sealant on the primary just replace the rubber when needed, usually you can remove the cover many times if you don't over tighten the outer cover.
 
ashman said:
Do not use sealant at all when you use a new rubber, in 47 years I have never used sealant on the primary just replace the rubber when needed, usually you can remove the cover many times if you don't over tighten the outer cover.
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thanks buddy i will just clean out all areas and fit the new seal when it arrives,
 
kommando said:
I have added pics to my post showing how to use a file to remove high spots and leave a flat surface.
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thanks buddy i will check it now, i dont have any other leaks it just came out on the top in one little area and over 50 mile spin it only reached the top of the primary so the leak was very small
 
Gently draw a file over the outer cover joint surface, any high spots will show as bright silver, then use the file to remove the high spot. No force really required, just the weight of the file plus 2 fingers and a few strokes will do. Ignore any low spots as a new compliant O ring seal should fill them in.
 
This looks like corrosion residue? The white on the gasket?
 

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Head said:
Do ye think chain is loose I have 20mm either way
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Do you have the workshop manual?

YES, the chain is TOO LOOSE.

The manual is downloadable free, or paper is still available for cheap.

Specification is 3/16", IIRC

This forum is invaluable. Have the very basics of a shop manual should be a prerequisite.

🍻🏁
 
There is a very specific way to change the tension on the primary chain which is in the manual. If you do not follow it then the rear chain will pull the gearbox backwards and cause the primary chain to be too tight which is worse than too loose.
 
kommando said:
There is a very specific way to change the tension on the primary chain which is in the manual. If you do not follow it then the rear chain will pull the gearbox backwards and cause the primary chain to be too tight which is worse than too loose.
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OP, pay attention to this. It is not hard to do, but often times glazed over/ignored.

It is because the bolt hole clearances allow movement (due to the transmission being yanked in two directions, forward & backward), and when properly sequenced, the adjustment bolts hold the trans from moving.


Bonus: this procedure is IN the manual. 🏆
 
concours said:
Do you have the workshop manual?

YES, the chain is TOO LOOSE.

The manual is downloadable free, or paper is still available for cheap.

Specification is 3/16", IIRC

This forum is invaluable. Have the very basics of a shop manual should be a prerequisite.

🍻🏁
Click to expand...

Norton Companion

Of and for Norton Motorcycles
www.doov.com
 
concours said:
That bolt joint is designed to shoulder up. That is, when properly shimmed, the shoulder nut pulls the cover snug enough to compress the gasket, and then hits the shoulder.
A well engineered setup that is not sensitive to over torquing.
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Believe manual states 15 ft-lbs on the center nut?
 
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