Intermediate Timing Gear circlip fixing

Information relating to the Matchless G9 or AJS Model 20 500cc twin
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UncleCharlie
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Posts: 8
Joined: Thu May 28, 2020 4:06 pm
Location: Worcestershire UK

Intermediate Timing Gear circlip fixing

Post by UncleCharlie »

On my recently re-built engine (re-built by others I should add as I am a new owner), the oil pump backplate does not seat fully on to the three crankcase mounting studs because it fouls a circlip that is fitted on to the Intermediate timing gear (stub) shaft . Indeed it actually rocks on the circlip!

Neither the parts book nor the technical manual lists or even shows such a circlip although in my ignorance, I assume that one should be fitted in order to retain the gear on the shaft - or should it? There is actually a circlip-accomodating grove on the shaft (part No. 012508) even though the parts list drawing of the shaft does not show such a groove!

I would be grateful if anyone could throw some light on the correct fitting of this intermediate timing gear please?

Charlie
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dave16mct
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Joined: Mon Jan 01, 1990 12:00 am
Location: LANCASHIRE UK

Re: Intermediate Timing Gear circlip fixing

Post by dave16mct »

No there is no circlip. The pump plate holds it in place. I've never noticed a groove in the spindle.
Dave.
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ajscomboman
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Joined: Mon Jan 01, 1990 12:00 am
Location: HAMPSHIRE UK

Re: Intermediate Timing Gear circlip fixing

Post by ajscomboman »

There should be no groove for a circlip.
UncleCharlie
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Posts: 8
Joined: Thu May 28, 2020 4:06 pm
Location: Worcestershire UK

Re: Intermediate Timing Gear circlip fixing

Post by UncleCharlie »

Thank you chaps for the information - very much appreciated!
Charlie
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