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John Deere Tractors Discussion Forum
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Rear-wheel-adjusting pinion shaft

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55 50

12-14-2007 08:50:55




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I saw a 730 diesel that had a rear wheel width adjusting bolt (Service Manual term is pinion shaft) missing and the owner had purchased a new one from John Deere. The new bolt was longer with a snap ring groove at the outer end and the snap ring came with it.

Must be a design change by Deere. I wasn't aware that those bolts would fall out on their own. I thought they were press fit. Has anyone else lost those shafts?

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Mike M

12-14-2007 09:20:14




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 Re: Rear-wheel-adjusting pinion shaft in reply to 55 50, 12-14-2007 08:50:55  
I think I had one fall out,but found it in the drive. After you clean them up and get everything freed up they don't fit as tight. I had to take a punch or chisel and knurl the shaft to make it fit tight again.



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F-I-T

12-14-2007 09:50:26




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 Re: Rear-wheel-adjusting pinion shaft in reply to Mike M, 12-14-2007 09:20:14  
The last one I bought from Deere was in 2001 or '02, and it was just like the original in the 70D, but that doesn't mean that they didn't later consolidate spare parts around a universal type replacement pinion shaft. I know like Mike said, when everything was cleaned up, the new pinion gear did not want to sit on the new shaft real tight, so I put two little puddles of Mig bead on there, and filed them down until they had just a nice interference. You do know that on the end of the pinion shaft, opposite the head, there's supposed to be a factory cork plug installed so water doesn't infiltrate?

Frank

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