Posted by mark d brown on October 18, 2007 at 06:12:29 from (203.206.103.245):
i am just wondering wether any one has had simialar problems to me or not? i have a 4440, had it since new, 12700 hours on it, motor still untouched, original paint & cab liner. (still my pride and joy) but it has a habit of chewing out the 2 short shafts that come out of the differential into the bull gears in the final drives, does a set every 3500/4000 hrs. doesnt seem to be a big problem in other jds over here. have a 4430 with 7600 hrs stll on original shafts but been reraced. a 4450 that done 8200 hrs, no metal in filters or anything and it broke a tooth clean off one shaft, the tooth fell down in the planetry/bull gears, locked the wheel up and split the trumpet housing. the 4450 is on duel 18.4x38s the 44440 and 4430 on single 23.1x34s, the 3 of them pulling the same gear, yet the 4440 chews shafts, am wondering if any over in he us do it? or have been thinking theres something just a bit out in the castings/housing on my particular tractor from new? planetries have been turned 2 time and new ring gears put in once, so its not in the outside housings, theres been no wear on one side of the shafts etc to suggest serous misalignments, it just takes the hard surfacing off and chews the shafts up. any thoughts or suggestions? thanks
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