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Hi Ron,
I’m not sure I follow your reference to two half washers.
Here are some diagrams with numbers. What seal are you after and what gear is in your way?
I have only had mine apart far enough to replace seal numbers 28,29 and 30 from the parts diagram. That was a real pain and I had to put speedi-sleeves on the shaft where the dirt in the old seals had worn groves in the housing. Don’t scrape the gasket off of the top cap, it is a thickness shim used to set the backlash on the gears. As long as you aren’t messing with the gears, everything should be fine just putting it back together. Unless of course your backlash needs adjusting.
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The seals to be replaced are #29 and #30 in the Front Axle.pdf. Gear #40 must be separated from the shaft(part#33). At assembly, the two half washers(#39) are installed into a groove on the shaft of #33, then gear #40 is pressed over the washers. The assembly of this connection is described, but not the disassembly.
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Piper,
Thanks for looking a my little problem. I watched a U-Tube video about front seal replacement on a Kubota. The guy used a chisel to separate everything, then he used dirty solvent and a rag to clean the parts. The two half washers were in a small sleeve, not in the gear’s ID.
Maybe, a bearing separator will do the job. One of the U-Tube videos said that, when pressing the gear into place, it will sound like a shotgun blast when the washers go into place. That statement makes me worry.
Thanks again, I will send and update once it is disassembled.
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Hi Ron,
I haven’t had that part of my hubs apart. I replaced the seals between #42 and standing shaft housing #25. Something I would call a king pin housing. Interesting that they use the same seals in both applications.
It sounds like the gear is a press fit on the shaft and the two half washers are the friction surface. I have never seen that before and if that is all that holds the wheels (shaft #33) onto the tractor it seems a little iffy to me.
Based on the surface area of the washers it must be a pretty tight press fit. It would take a pretty good gear puller to get it off of the shaft if that is the case.
It looks like there is room enough between the gear and the cover to get a press plate in there for use in a hydraulic shop press but building the supports to reach around the shaft and cover will be a challenge.
From the drawing in the frontaxleservice.pdf it looks like you won’t have to move the gear very far to clear the half washers. I never would have guessed that is what they are or their purpose just looking that the drawing. And the way the gear is tight to the shoulder on the shaft you would never guess that there were half washers inside.
If you can, please post pictures as you take it apart.
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You know, on second look it may not be that tight of a fit.
The diameter of the combined half washers is larger than the washer (38) next to the bearing. Then the gear slides down over the half washers capturing them on the shaft. The gear is captured in place by the inner bearing that is seated against the inside housing. The outer bearing and washer 38 are all captured in place by the cover (35).
It may all just fall apart once you take the cover off. That would be a lot more along the lines of thought the Chinese use when putting these things together. They don’t use extra complicated procedures when simple stuff will do.
Let us know what happens!
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