Suspect a Leaky Oil Screen ?

speirmoor

speirmoor

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I have oil pooling up on the crankcase behind the cylinders. The source I'm 99% certain is the oilscreen. No matter how much I tighten it eventually leaks again. I guess the O-Ring is shot. Has any one else had this issue?
Suspect a Leaky Oil Screen ?
 
I have heard of them leaking if the oil screen is not properly seated in the recess inside the filter body. Wouldn't the oil follow down the hose and leak down by the oil pump ?
 
TonyA said:
I have heard of them leaking if the oil screen is not properly seated in the recess inside the filter body. Wouldn't the oil follow down the hose and leak down by the oil pump ?
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It does for a bit then meets one of the electrical wires and follows that ( or so I suspected)
 
If it's the o-ring in the strainer that is leaking, the oil drools down the lower strainer canister, onto the lower hose, then on to the the oil pump body, and onto the crankcase when bike is tilted resting on the sides stand, and finally migrates onto the engine sump cover.
Been there, done that, got the tee shirt.

I found that you have to carefully center the tiny, crappy o-ring in the canister before slowly and carefully screwing the lid back on to the canister body.
Had to do this several times before I got it on properly were no oil seeped through the o-ring.

A good fix would be to buy a package of various size/thickness o-rings and find a slightly larger one with a thicker band so it would be self centering in the canister body.
Consider this another character feature of the 961.
 
BritTwit said:
If it's the o-ring in the strainer that is leaking, the oil drools down the lower strainer canister, onto the lower hose, then on to the the oil pump body, and onto the crankcase when bike is tilted resting on the sides stand, and finally migrates onto the engine sump cover.
Been there, done that, got the tee shirt.

I found that you have to carefully center the tiny, crappy o-ring in the canister before slowly and carefully screwing the lid back on to the canister body.
Had to do this several times before I got it on properly were no oil seeped through the o-ring.

A good fix would be to buy a package of various size/thickness o-rings and find a slightly larger one with a thicker band so it would be self centering in the canister body.
Consider this another character feature of the 961.
Click to expand...
Yes thats it in a nut shell. I'll open it up and try your method next time I have a chance.
 
Well I met Stuart2015 at the temporary factory unit he was having that very item replaced,same reason .
I not got one , did feel I was missing out !
 
BLIGHTYBRIT/SF said:
Well I met Stuart2015 at the temporary factory unit he was having that very item replaced,same reason .
I not got one , did feel I was missing out !
Click to expand...
You have been gone from the forum Richard , good to see you here again . :)
 
speirmoor said:
I have oil pooling up on the crankcase behind the cylinders. The source I'm 99% certain is the oilscreen. No matter how much I tighten it eventually leaks again. I guess the O-Ring is shot. Has any one else had this issue?

I did. Norton had a replacement on the shelf at their temporary location in Derby. ‘Blue Roll’ diagnostics helped me identify where the leak was.
Click to expand...

Suspect a Leaky Oil Screen ?
 
Lincolnshire Poacher said:
I agree - my 2013 Sport had starter motor leakage issues initially.
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Mine too. They did major surgery on the cases first. Still leaked, but I got a new set of rings out of it. The started itself leaked, not the gasket. Internal O ring. Thanks to Matt Capri. He told me that. Norton sent a new started, no more leak.

I don't have that filter on my 13 Sport.
 
Britfan60 said:
Mine too. They did major surgery on the cases first. Still leaked, but I got a new set of rings out of it. The started itself leaked, not the gasket. Internal O ring. Thanks to Matt Capri. He told me that. Norton sent a new started, no more leak.

I don't have that filter on my 13 Sport.
Click to expand...
I was told that an early batch (2013) of starter motors had ‘not been produced to factory spec’ which had resulted in an internal starter motor leak. Starter motor was replaced and the leak was fixed.
 
This is definitely the culprit. Funny how the leak develops once the bike cools down and not when it’s running ?
Suspect a Leaky Oil Screen ?

Anyway something to tackle next time I’m at the garage.
 
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