J D 1946 A Slant Dash

Ron Cutler · Jul 11, 2018

I have a J.D. Model A,1946, How do i change the oil pump shaft coupling? can it be done from the bottom of the oil pump or , by
taking the governor case apart, any help would be appreciated, Thanks Ron C.

MikeJM · Jul 11, 2018

You’ll have to remove the crankcase top cover where the starter is bolted to. Then depending on how things look you can drop just the oil pump gear and put a new coupler on and put it back together. If the oil pump body is gunned up or has issues you’ll have to disconnect the line and drop the whole oil pump out.

Waterloo · Jul 11, 2018

The least work and expense to replace the oil pump drive coupling is to remove the crankcase cover on top and remove the oil pump drive cover on the bottom. This will allow you to align the coupling with the cam driven shaft turning the oil pump. You can not replace the coupling without removing the crank case cover.

old popper · Jul 11, 2018

Get a couple of long bolts to replace 2 in the oil pump cover, that way it will only drop 3" or so. Make sure you drain the oil first. Take the crankcase cover off the top to replace the coupler.

greenmech · Jul 11, 2018

That is a good idea Popper. Ron MN

David from Kansas · Jul 12, 2018

Aren't there a couple of oil lines you have to take loose to be able to drop the oil pump? I have never done it just recalling what others have said.

old popper · Jul 12, 2018

An old 2 cyl JD mechanic taught me that one about 40 years ago.

Ron Cutler · Jul 12, 2018

Thanks you all, i thought it could be done with out taking the oil pump out , i bet that's a real job,
Thanks again Ron C.

J D 1946 A Slant Dash

Ron Cutler

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MikeJM

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Waterloo

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old popper

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greenmech

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David from Kansas

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old popper

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Ron Cutler

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