D4 6U starting engine

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Ttophoven

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I am in need of a .030 undersize front main crankshaft bearing ( end with the timing gear)
Anything anyone is willing to part with out there, I'm open to other options if anyone has suggestions.

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Sat, Nov 14, 2020 7:33 PM

juiceman

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Do you have the part number handy? I have a new one from CAT, but I believe it is for the rear, which I assume not the same? Parts book not here, I can look next week. JM

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Sat, Nov 14, 2020 10:54 PM

Ttophoven

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Reply to juiceman:

Do you have the part number handy? I have a new one from CAT, but I believe it is for the rear, which I assume not the same? Parts book not here, I can look next week. JM

I had a machine shop measure and the crankshaft is worn to badly for a .030 undersize bearing, am now in search of a serviceable crankshaft.
Thanks

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Sun, Nov 15, 2020 12:16 AM

Ttophoven

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Reply to Ttophoven:

I had a machine shop measure and the crankshaft is worn to badly for a .030 undersize bearing, am now in search of a serviceable crankshaft.
Thanks

.030 undersize number for the front/ gear end is (1H282😎 discontinued at Caterpillar

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Sun, Nov 15, 2020 12:18 AM

juiceman

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Looks like mine is for the rear. Sorry. [attachment=61047]2D82D6EB-8635-4A7A-8AF7-F8B316CE5AF6.jpeg[/attachment]

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Sun, Nov 15, 2020 2:33 AM

Ttophoven

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Jon, what's a good time to call?
Thanks Tim

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Sun, Nov 15, 2020 7:24 PM

Ttophoven

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Would anyone have the standard crankshaft specs for the crankshaft in the photo? It's out a D4-6U [attachment=61088]20201115_144355.jpg[/attachment]

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Mon, Nov 16, 2020 7:11 AM

trainzkid88

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Reply to Ttophoven:

Would anyone have the standard crankshaft specs for the crankshaft in the photo? It's out a D4-6U [attachment=61088]20201115_144355.jpg[/attachment]

well the bearing bores are listed as 1.8200 inches so the crank would be a slight clearance on that

"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"

instead of perfection some times we just have to accept practicality

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Tue, Nov 17, 2020 6:40 PM

trainzkid88

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Reply to trainzkid88:

well the bearing bores are listed as 1.8200 inches so the crank would be a slight clearance on that

you may be able to speedi-sleave the crank back to a usable size it is also possible to get it built up and reground any good engine reco shop should be able to do that

"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"

instead of perfection some times we just have to accept practicality

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Tue, Nov 17, 2020 6:43 PM

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