12a oil pump chain
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12a oil pump chain
I'm sticking this '85 12a in a MGB and I had the pan off tonight to see how I can re design it so I could fit it behind the front cross member. I looked up and noticed the oil pump drive chain had more slop than I would have thought it would have.
So how much chain slop is too much? I have the pan off and am feeling it from the bottom. How tight are they when new?
Does a new one come with a master link and I could spin it around without taking the front cover off?
So how much chain slop is too much? I have the pan off and am feeling it from the bottom. How tight are they when new?
Does a new one come with a master link and I could spin it around without taking the front cover off?
#4
You can get the oil chain at www.rocauto.com for $15
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The front cover must come off.
The E-shaft passes thru the chain, and thru the front cover. Also, the chain gear bolts onto the oil pump from the front, and you cannot get sufficient slack in the chain to remove it without first unbolting the chain gear.
To install the oil pump chain, you have to remove the front stack, which means removing the front cover. There's no workaround.
The E-shaft passes thru the chain, and thru the front cover. Also, the chain gear bolts onto the oil pump from the front, and you cannot get sufficient slack in the chain to remove it without first unbolting the chain gear.
To install the oil pump chain, you have to remove the front stack, which means removing the front cover. There's no workaround.
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Thanks guys for the specs out of the book. I'll take another look at it and maybe I can convince myself it's good enough
I guess I hoped that someone would post up that yes the OEM one is a crimped master and it all has to come apart but 54 links of #7 chain and a clip master works fine.
Better luck next time I guess.
I guess I hoped that someone would post up that yes the OEM one is a crimped master and it all has to come apart but 54 links of #7 chain and a clip master works fine.
Better luck next time I guess.
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I talked to the GF's father tonight and asked him to measure the slop in the chain.
He emailed back: 3/4" total slop back and forth. I thought that was bad news but It looks in the picture that you are supposed to measure it from a centered position (straight edge between the sprockets) and it pushed to one side.
So I guess that's ok since that would be 3/8 from centered?
Thoughts?
He emailed back: 3/4" total slop back and forth. I thought that was bad news but It looks in the picture that you are supposed to measure it from a centered position (straight edge between the sprockets) and it pushed to one side.
So I guess that's ok since that would be 3/8 from centered?
Thoughts?
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I searched like crazy to try to find the spec on chain slop I found nothing so I posted.
Now you're posting that I should have ... searched for ?? ... I know chain issues are not a common problem that's why I had to post to find the spec.
Are you suggesting that because it's not a common problem I shouldn't measure it ?
I am a diesel equipment mechanic and for the last few years I've looked after the transit fleet here so I may not know a lot of spacific rotary info but I know that when you can almost **** a chain link back on it's self to skip a sprocket tooth it's worth finding out how to measure it.
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