Delco Remy Distributer Problem...DC CASE

Anonymous-0 · Jul 13, 2010

About fifteen years ago we replaced the non-functioning magneto on our '51 DC CASE with a "90 degree" Delco Remy distributer we got off a DC in a salvage yard. For years the distributer worked just fine. Then we sent the engine out for a complete overhaul. Ever since, the tractor will not start without having to retard the timing. Upon starting we must immediately advance the timing for the tractor to run properly.

Today we took the distributer all apart, cleaned/oiled it all up and reassembled, but the problem persists. There is no vacuum advance, but some sort of centrifugal advance system. Everything looks good inside, but obviously there's a problem.

Any repair suggestions?

Thank you,
Glenn F.

pete 23 · Jul 13, 2010

In the redarded position you are setting it for starting, just what is the timing at that point and after you reset it when it is running what is the timing then. Pretty hard to suggest what your problem might be not knowing where you are setting the timing. It indeed does have a mechanical centrifical advance mechanism that when working is fully retarded at rest and cranking speed and advances according to engine rpm. Tractors don't use a vacuum advance.

Nebraska Cowman · Jul 14, 2010

I'd guess the problem is in the mecanical advance. You will have to take it apart and see what the trouble is. I ran in to one once the farmer put too long of a screw in the condenser. caused all kinds of greif. He thought the tractor had jumped time.

glennster · Jul 14, 2010

grab the rotor and give it a little twist, it should move some and then "snap" back when you release it. if it doesnt, like howard said, the advance is stuck.

Brother Dave · Jul 14, 2010

If you can not find anything wrong with the distributor, then I would suspect that when the engine was rebuilt the timing marks were off by a tooth or so. It ran fine before the rebuild but not after. Just my two cents.

JMOR · Jul 14, 2010

(quoted from post at 23:13:56 07/13/10) About fifteen years ago we replaced the non-functioning magneto on our '51 DC CASE with a "90 degree" Delco Remy distributer we got off a DC in a salvage yard. For years the distributer worked just fine. Then we sent the engine out for a complete overhaul. Ever since, the tractor will not start without having to retard the timing. Upon starting we must immediately advance the timing for the tractor to run properly.

Today we took the distributer all apart, cleaned/oiled it all up and reassembled, but the problem persists. There is no vacuum advance, but some sort of centrifugal advance system. Everything looks good inside, but obviously there's a problem.

Any repair suggestions?

Thank you,
Glenn F.

ook for missing broken spring in advance mechanism. Allowing it to be fully advanced at starting.

Oh, and just for the record, such all inclusive blanket statements as, " Tractors don't use a vacuum advance.", should never be made as they will almost always be in error, as is this one.

JDseller · Jul 14, 2010

I agree with Brother Dave. They have got the cam or distributer drive out of time. These old cases are not forgiving about that. My brother rebuilt a SC Case top to bottom and we had trouble starting it. Always had to put start it. Finally took the front cover off and found that we had it one tooth off. Now it will start in a quarter of a turn.

Delco Remy Distributer Problem...DC CASE

Anonymous-0

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pete 23

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Nebraska Cowman

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glennster

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Brother Dave

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JMOR

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JDseller

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