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AMC 150 primary chain adjustment

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AMC 150 primary chain adjustment

Post  speedtwinbri on Tue Aug 02, 2016 10:46 pm

Can anybody tell me how to adjust the primary chain on the 150 AMC engine, or do I need to fit a new chain. Cheers.
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speedtwinbri

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Primary chain

Post  piston 197 on Wed Aug 03, 2016 5:58 am

On the 175,200 and 250 AMC you can space the gearbox with extra gaskets, long winded and means taking the engine out and gearbox removal, on the 15T you are looking at a new chain, if it is worn enough on it's short run to be slack then it is going to be worn out anyway.
JH
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piston 197
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AMC 150 primary chain adjustment

Post  speedtwinbri on Wed Aug 03, 2016 8:13 pm

Thanks for that,that's what I thought when I couldn't see any way of "tilting" the gearbox. The chain is slack enough to have worn a groove in the bracket that the chain case fastens to. Any idea where I might get a new chain, will Villiers services stock them? I presume to fit this I will need to remove both the engine sprocket and the clutch basket.
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primary chain

Post  piston 197 on Thu Aug 04, 2016 5:52 am

Originally the primary chain was endless i.e riveted in one and yes both clutch and engine sprocket will need removing to replace, a chain with a joining link could be used and then there will be no necessity to remove them, but an endless chain will always be better ( chain only as strong as it's weakest link etc.)
if you specify the number of links, any chain supplier ( sprockets unlimited, chain gang etc) should be able to supply you with the correct item ?
JH
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