Tim S, Tx Jim, and Cliff - 4320 update

Grey

Member
Hey guys, I posted a month or so ago about our 4320 that locked up suddenly while driving down the road in 8th gear. Well we dug into it today and it was exactly what y'all had described. The differential cross shaft came out about 2", hit the trans pump and destroyed it and then hit the pinion shaft severely damaging it. The ring gear also has some damage. When it hit the pinion shaft, it sheared the portion of the shaft completely off. So, looks like we have a lot of work to do. This tractor did a lot of plowing with a 5 - 18" plow back in the day with the previous owner so that might explain it as Tim S described. I have attached a few pictures of the damage. Thanks for the help.
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Darn shame it clipped the pinion shaft, a lot of times it knocks that aluminum manifold of and locks it into the gears, not hurting them. the bottom shaft will need to come out and it's near impossible to put it back in with out the set-up dummy shaft, and when you do it be "absolutely" sure that you follow the schematic of the parts exactly, the rear lower shift collar can be put in backwards and not work out...as well as having the snap rings in order and the thrust washers in right,,wish you were closer,, I can do one of these in my sleep,,,but on the other hand I have a 7400 power Quad here that is making my head hurt...
 

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