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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: D6 pony motor

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Old Magnet

08-17-2012 07:25:20

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The drill and ream procedure is the Cat method for original fitting parts. The moving and redrilling is a make do.

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08-17-2012 17:04:16

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 Re: D6 pony motor in reply to Old Magnet, 08-17-2012 07:25:20  
I see, as long as it works I'll do what I have to. Seems I had to move the bearing in quite alot though, I did'nt actually measure it, but I bet it was close to a quarter inch. Why so far off with original cat parts? I have no known history of this engine so I suppose it could be a mix and match from years past.

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Old Magnet

08-17-2012 20:28:04

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 Re: D6 pony motor in reply to chickensoup, 08-17-2012 17:04:16  
That is excessive, must be well worn or mismatched parts. What does the thrust face on the crank look like.

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08-18-2012 02:59:42

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 Re: D6 pony motor in reply to Old Magnet, 08-17-2012 20:28:04  
Crank thrust face looks fine. If the pony motor is exclusive to the D6 series, I'm now wondering if this motor is from another series and that would explain why my new parts seem so far off. I should do just a little more research to make sure it will fit the machine properly. Souds like you have alot of expierience with these.

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Old Magnet

08-18-2012 09:42:13

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 Re: D6 pony motor in reply to chickensoup, 08-18-2012 02:59:42  
Crankshaft part number did change from 4B2311 to 5F8405 but I don't know of any specific changes. Rest of the pony basic engine is the same, early or late. Just some of the bolt ons changed.
Yes, pretty familiar with the D6-9U's of which I have two. One is pony motor, the other direct electric start.
Not unusual to find crankshaft end play pretty far out of spec but 1/4" is pushing it.

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