G2 CSR engine rebuild

Information relating to the Matchless G2 or AJS Model 14 250cc Lightweight
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G2 CSR engine rebuild

Postby itma » Fri Dec 07, 2007 11:13 pm

take a pic & stick a photo link up?

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G2 CSR engine rebuild

Postby ajscomboman » Sat Dec 08, 2007 4:10 pm

Alan, just a thought. You don't think Nigel could be talking about part No.042046 the screw/bolt that locates the oil pump feed plug? It screws through the crankcase and locks onto the plug part No.042044.

The locating bolt is not shown in the exploded diagram but is mentioned in the workshop manual.

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G2 CSR engine rebuild

Postby Biscuit » Sat Dec 08, 2007 4:46 pm

I think I have already asked him that, it seems this hole is further aft.




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G2 CSR engine rebuild

Postby basketcase » Sat Dec 08, 2007 5:38 pm

I have looked on the exploded diagram and found the part (042046) that you`re on about, does the part 042044 fit into the end of the oil pump shaft? If so how does the shaft turn if 042046 locks onto it?
I have taken a couple of photos but don`t know how to put them on the site.
There is a small threaded pin, no head or slot but is reduced on the end. It doesn`t look as if it has broken but I was wondering how it locked into place, which is why I likened it to the one in the cylinder head.The one in the exploded diagram looks to be a bolt.

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G2 CSR engine rebuild

Postby Biscuit » Sat Dec 08, 2007 6:15 pm

042044 is just a plug, fitted with an 'o' ring, 042046 is a screwed pin that locates the plug. the plug does not turn, so the fact that the pin locks on to the plug matters not.




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G2 CSR engine rebuild

Postby basketcase » Sat Dec 08, 2007 6:40 pm

Does 042044 fit into the end of the shaft? If it does then how does 042046 lock onto it? I maybe missing something simple here, or I may be simple, bit if it is in the end of the shaft, and the shaft should turn, if 042046 locks onto it how does it turn??????
Maybe a nice G3L would have been a better bet, but there again where could I have found one for £250!

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G2 CSR engine rebuild

Postby 56G80S » Sat Dec 08, 2007 9:49 pm

Maybe help in getting the photographs onto the site would be the big step forward. Sorry, but I've not done this so can't help, but I'm sure there was a thread on it recently.

PS But I did have a 14CSR so might (don't hold your breath) recognise what the story is when I can see it.

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G2 CSR engine rebuild

Postby itma » Sat Dec 08, 2007 9:56 pm

Maybe if I take a photo of the one I now have in bits, and stick that up here that will help?
I can number all the holes, and then you can pick out whats what?

just to cheer you up I once bought a G3L for thirty bob [1.50] and it ran. .


Edited by - itma on 08 Dec 2007 9:59:42 PM

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G2 CSR engine rebuild

Postby Biscuit » Sat Dec 08, 2007 10:19 pm

042044 simply blocks the end of the bore in which the pump plunger or shaft revolves and oscillates. Nothing fits/screws/locks onto the either end of of the pump shaft, if it wasn't for the guide pin the pump shaft would wobble up and down like a willy in a windsock.




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G2 CSR engine rebuild

Postby Merlin » Sat Dec 08, 2007 11:41 pm

Speak for yourself on that one Alan were made of sterner stuff in north
Chemists do it with test tubes

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