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Modern Tractor Discussion Board

Topic: Ford 4630 transmission or rear end noise
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Blue tractor Guy

08-12-2014 18:44:42
208.123.179.137
23789



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Looking for some help on identifying what I might have done to my tractor. Tractor is a Ford 4630, MFWD with 8x8 shuttle transmission. Made the mistake of draining oil from transmission and not filling it back up. Anyway, after about 10 minutes of mowing, heard a squeal from transmission and smoke coming through range lever. Shut tractor off, realized what I did, refilled transmission and was lucky to go back to work. Tractor has been operating OK now except for sometimes there will be a loud growling noise, kind of sounds like metal on metal grinding and squealing that seems to come from right under the seat area. When you put the clutch in the noise goes away immediately. it seems to show up when there is a load on the tractor (pulling up hill for example), but then when the load goes away so does the noise. It might stay for a few minutes and then disappear and then show up 15 minutes later. Tractor shifts Ok in all gears, range and shuttle. Clutch, PTO and diff lock work OK. I am suspecting I hurt something when I ran the transmission dry. Anybody have any ideas of what might have been damaged ? I don't want to go chasing a noise and split the rear axle and transmission trying to find something without some ideas of where to look.

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MikeJM

08-18-2014 08:17:41
129.139.1.75
23801



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Re: Ford 4630 transmission or rear end noise in reply to Blue tractor Guy, 08-12-2014 18:44:42  
Like Jim said, could be any of the number of bearings/bushings in the trans, they are after all a collar shifted constant mesh trans.

Just from a dianostic point does it make more/less noise in any one gear than the others?

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Blue Tractor Guy

08-18-2014 18:47:18
72.25.63.240
23802



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Re: Ford 4630 transmission or rear end noise in reply to MikeJM, 08-18-2014 08:17:41  
I don't think it is particular to any gear. The noise can show up in all of the low range gears when pulling in the field.

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Tx Jim

08-13-2014 03:27:14
69.35.160.115
23790



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Re: Ford 4630 transmission or rear end noise in reply to Blue tractor Guy, 08-12-2014 18:44:42  
Sounds as if a trans brg or brgs are trying to fail.

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