G9 Oil supply to rockers

Information relating to the Matchless G9 or AJS Model 20 500cc twin
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UncleCharlie
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Location: Worcestershire UK

G9 Oil supply to rockers

Post by UncleCharlie »

Near the top of the inside face of the left hand half of my G9 crankcase is a transverse oil gallery from which there are two outlet, one at each end that chanel oil to the rockers (see photo). What I cannot understand is how the oil is fed INTO this gallery from the pressure relief valve. Note, the large hole at the right hand end (also a similar one to the left) is for one of the fixing bolts . Can any kind soul please enlighten me as I need to confirm that all is OK prior to reassembly?
Cheers
Charlie
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clive
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Re: G9 Oil supply to rockers

Post by clive »

See below!
clive
if it ain't broke don't fix
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clive
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Re: G9 Oil supply to rockers

Post by clive »

I think the oil runs along outside the bolt. The hole for the bolt is a little wider than the bolt. Someone more knowledgeable on twins will confirm.
clive
if it ain't broke don't fix
UncleCharlie
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Re: G9 Oil supply to rockers

Post by UncleCharlie »

Thank you Clive, could really only be that I guess; there must therefore be a drilled oil feed hole that connects with the bolt hole but I cant quite spot it.
Charlie
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dave16mct
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Re: G9 Oil supply to rockers

Post by dave16mct »

It goes from the oil distributor upwards.
Dave.
UncleCharlie
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Re: G9 Oil supply to rockers

Post by UncleCharlie »

Thank you Dave, it's just that we cant quite spot the drilling which seems to be well disguised.
Charlie
UncleCharlie
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Location: Worcestershire UK

Re: G9 Oil supply to rockers

Post by UncleCharlie »

Have now located the elusive oil-feed drilling that opens out at the outer end of the engine bolt hole.
Thank you chaps for your help.
Charlie
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dave16mct
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Re: G9 Oil supply to rockers

Post by dave16mct »

You need a special washer with a seal for that bolt. It's available from the club.
Dave.
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