350U trans stuck in 4th

linemechanic1 · May 13, 2018

Got tractor running great but had to force it into the only gear it would go into---4th. This was after pulling the shifter, cleaning/freeing it up, draining contaminated trans fluid for 40 hours, filling with kerosene and driving it 75 yards. And I had to manually move the shifting forks to neutral while I had the shifter off the top of the trans. No TA or PTO's on this one, just a basic C-175 Gas.
Any ideas of how to unstick this thing? Thanks up front!

BarnyardEngineering · May 14, 2018

Shift rails and/or sliding gears are probably rusted. You'll have to remove the top cover off the transmission to get a them.

linemechanic1 · May 31, 2018

Yep, that's exactly what I did. Pulled hydraulics, then trans cover. Heavy sucker. Drained water/mud out, filled half up with kerosene, jack up wheels, spun the whole trans slowly and drained again. Brushed off all the teeth?especially ones with corrosion?with muriatic acid (31%) and let soak for a few hours. Rinsed again with kerosene. Wire brushed all gears, rinsed with more kero. Got brand new 1/2 inch bearings for the shifter slides from ACE hardware Trading Post. Reassembled, oiled up and it shifts real good now.

350U trans stuck in 4th

linemechanic1

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BarnyardEngineering

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linemechanic1

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