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 10-28-2002, 18:26 Post: 44331
joe johnston
2002-10-28 18:26:49
Post: 44331
 rear for case 648 compact tractor

Any know where I can get a rear end for a case 648 garden tractor? I believe the 644 and 646 as well as some of the Ingersoll units would work. The spool holding the spider gears in mine is cracked in several places. Because of this, a piece of metal broke became wedged and broke through the bottom of the case. I can be reached at ecphsca@yahoo.com.






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 12-22-2002, 06:31 Post: 46424
Ingersoll444



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 rear for case 648 compact tractor

As long as your tractor is not a backhoe model, a Case/Ingersoll 44x series rear will work. Now if you can find used guts, the hole can be welded. Where these rears crack is not a high stress area.

Paul






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 12-22-2002, 07:36 Post: 46429
TomG

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 rear for case 648 compact tractor

That's a good comment. It really does amaze me what can be repaired today. It seems like you seldom have to give up on anything.

I don't know if current techniques still require heating castings in big ovens before welding and if things like stress relief and shaft alignments remain problems.






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 12-22-2002, 16:38 Post: 46460
Ingersoll444



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 rear for case 648 compact tractor

I am not a good enough weldor to try welding cast, but I dont think you have to heat the whole thing, just the area around the repair. But I could be wrong.

Paul B






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 12-23-2002, 05:35 Post: 46478
TomG

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 rear for case 648 compact tractor

I'm not much of a welder myself and my experience is limited to gas. An old attitude was that cast wasn't welded, it was brazed.

I think that newer techniques are quicker and heat the casting less. The old problem was that to get a good weld the casting got hot enough to warp it. The weld took in a warped state and produced internal stresses and could throw bearing cups out of alignment when it cooled. Pre-heating a casting in an oven reduced the warping during welding.

Anyway, what ever the explanation is, people talk regularly about welding stuff that that I never would have dreamed about back in the late '60's when I was doing my bit of self-taught gas welding.

Since I'm on a subject where most everything sounds a bit fantastic to me, I'll throw in a comment I've heard several places about arc welding on tractors. The idea is that it's best to remove parts from the tractor to weld them. If welding is done on the tractor, the ground should be clamped as close to the weld site as possible. Wheels are convenient but poor places for the ground. High welding currents choose their own paths of least resistance and those could be through engine or drive train components.

People talk of eroded engine bearings and even fused gears. Sounds fantastic, but unlike urban rumors, you hear people say 'I've seen.....' or '....it happened to me.' I suppose I recall these stories because there was some recent talk about ROPS modification.







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Discussion Boards > Active Subjects > Messages as Posted > Case Forum

Thread 44331 Filter by Poster:
Ingersoll444 2 | joe johnston 1 | TomG 2 |




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