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Allis Chalmers Discussion Forum

HD3 engine

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school boy

03-28-2008 10:32:23

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My best friend has an HD3 that we plan to overhaul this summer. Is the engine the same as any of the tractor engines? Also the direction reversal clutch isn't working. Will any of the parts from the two speed clutch on the D series tractors interchange?


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03-30-2008 20:22:24

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 Re: HD3 engine in reply to school boy, 03-28-2008 10:32:23  
have enough to build a shuttle clutch, parts from flywheel to final drives, entire trans,winch, fuel tank, hyd system,H3 engine(gas)
740 667 6297 coolville ohio

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03-31-2008 05:05:24

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 Re: HD3 engine in reply to frmr606, 03-30-2008 20:22:24  
Do you have the spool valve for the 1066 loader? Mine is past the point of repair. If so, what would you consider taking for it?


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03-31-2008 13:07:09

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 Re: HD3 engine in reply to Dale(MO), 03-31-2008 05:05:24  
have single valve only, for up/down dozer blade

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03-28-2008 12:21:06

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 Re: HD3 engine in reply to school boy, 03-28-2008 10:32:23  
Engine and tranny are the same as a D-15.


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03-29-2008 09:33:44

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 Re: HD3 engine in reply to jhill52, 03-28-2008 12:21:06  
The tranny looks the same as the D-15, but ALL gears are different. I have found NO new gears or shift collars anywhere. Hopefully, it is in good shape.


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03-28-2008 12:16:58

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 Re: HD3 engine in reply to school boy, 03-28-2008 10:32:23  
Engine is the same as on a smaller D-series tractor. If you have the reverser, it is a shuttle shift, not the hi-lo clutches in the Power Director of farm tractors. They fit in the same housing, just like the shuttle shift on the forklift, based on the D17. But parts are different.

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