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Identifying D7 pony engines

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3 months 3 weeks ago #258381 by TOP
I am pretty sure the pony engine on my 17A is not original as the starting crank is located on the side down low next to the track and the bracket for the vertical starting crank was torched off. For the purpose of repairing it and getting parts it would be nice to know what it was from. Any help would be appreciated.

D7 17A '56

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3 months 3 weeks ago #258384 by CRS93082
Sounds like the pony for a 7M or 3T.

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3 months 3 weeks ago #258385 by gemdozer
The 17a low serie had the hand crank mechanic horisontal with the magneto vertical
The following user(s) said Thank You: TOP

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3 months 3 weeks ago #258388 by TOP
Replied by TOP on topic Identifying D7 pony engines
Still the bracket for the vertical crank was torched off.

D7 17A '56

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3 months 3 weeks ago #258389 by TOP
Replied by TOP on topic Identifying D7 pony engines
Any way to positive ID it?

D7 17A '56

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3 months 3 weeks ago #258391 by gauntjoh
Pictures would help.

John Gaunt, ACMOC Director, UK

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3 months 3 weeks ago #258395 by TOP
Replied by TOP on topic Identifying D7 pony engines
Here are some pictures. Pardon the hoses. I am removing a homebuilt auxilliary hydraulic system that I think was meant to run a tilt cylinder on the dozer.

D7 17A '56
Attachments:

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3 months 3 weeks ago #258396 by gauntjoh
That does not look like a starting engine from an earlier tractor like a 7M. Probably a later model.

John Gaunt, ACMOC Director, UK

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3 months 3 weeks ago #258398 by TOP
Replied by TOP on topic Identifying D7 pony engines
One difference from what the parts/service book says is the way the governor linkage is set up. This one has a rod that snaps onto a ball on a short arm below the pivot while the idle spring is on a long arm above the pivot. The arrangement I expected was that the governor linkage and the idle spring would both be on the same side (above) the pivot.

I wonder which D6, D7 and D8 pony motors will swap with this machine?

D7 17A '56

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3 months 3 weeks ago #258399 by gemdozer
The d8 14a use the same model and the rod picture from yesterday is connect to the carburator lever and the other end is connect to the top governor lever

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