What is this?

Information relating to the Matchless G3 or AJS Model 16 350cc Heavyweight
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mikeydpippin
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What is this?

Post by mikeydpippin »

[attachment=0]6086C17B-F7CF-4021-9C3D-79D99811F733.jpeg[/attachment



Just came back from a ride and had dripping from behind the chaincase, looks as though the chaincase is still weeping.
Looking around underneath I found this threaded male fitting, is this the discharge for wet sumping that is normally diverted onto the chain.
Or something missing?
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Mike
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Rob Harknett
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Re: What is this?

Post by Rob Harknett »

Looks like you have found the crank case Breather Its title tells you its function. There should be a short pipe attached pointing downwards. Oil mist will breath out. Some people put a pipe on to the rear chain, perhaps preventing it to function correctly. Perhaps oil will pool and block it.
Ashampoo_Snap_18 July 2019_11h14m36s_001_.jpg
Those are the parts missing. Expect to see a drop of oil seep out when parked up, you then know its doing its job.
The oil pump will return sumped oil back to the oil tank after a few minutes of starting the engine. The instruction book will inform you of chain care & lubrication.
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spookefoote1956
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Re: What is this?

Post by spookefoote1956 »

Is it a big blue arrow? ;)
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cfaber
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Re: What is this?

Post by cfaber »

spookefoote1956 wrote:Is it a big blue arrow? ;)
Clearly it's an up vote ;)
Fix it until it's broken!

Otherwise how will
anything get done?
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