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Mechanical Opinion Needed

Fawteen

Fawteen

Well-known Member
Location
Downeast Maine
I'm working on the rear end of a Shibaura sub-compact tractor. I need to remove the differential so I can swap out the ring gear. I'll be replacing the pinion shaft as well.

diff1.jpg


This is the bearing carrier as viewed from the inside.

diff2.jpg


This is the view from the outside.

It appears to me there are two possibilities as to how to remove the carrier and bearing:

1. The threaded holes on the outside with the long bolts screwed into them were empty. Possibly, the bolts can be screwed in and push against the housing to force the carrier out.

2. The threaded holes and bolts are used to attach a puller and the carrier is pulled out from the outside. I'm leaning toward this method.

Opinions? Something I'm missing?
 
You were able to find parts, reasonably $$$$, it looks like a good little machine, if you had gotten the loader it would move pretty quick around here.
someone on an assembly line put it together...they just didn't expect "you" to be taking it apart :), your choices sound good to me so far.
keep your stick on the ice.
 
Did ya find parts for it, or are you going to try to "gerry rig" it? (No offense to folks with German ancestry intended.)
 
I MAY have found parts at a reasonable price. Need to get the old ones off and see if I can find numbers or at least get dimensions and tooth count.
 
If you could find a pic of the part your trying to remove it might give you a clue as how to do it
 
Anyway to get a rough measurement of the diameters at each end? If those were jacking bolts there would have to be enough of a flange on the carrier to engage the casing. That would make the outside larger. Conversely, only having two bolts to use for a puller would be a little scary. Why is the paint only on part of the carrier?

OTJ
 
Looks to me like those are jack screws and that whole piece will pull out. Is the machined diameter (where there's no red paint) smaller than the distance between the bolts?
 
First thing I'd do would be to look in the threaded hole. I got a streamlite pencil lite,led, shines just straight ahead. See if bottom of hole is open to metal part beyond or is a blind hole. That will be a big hint as to what the use of the holes are for. If blind then has to be for puller.
 
Not to nit-pick, but it's actually "jury rig," which is an old sailing term. The "jury" refers to a random group of 12 people that never worked together before, and were just brought together for a temporary purpose. Hence a "jury-rigged" ship is one where the components (spars, sails, lines, etc.) are just thrown together, and not purpose-made to fit with each other. A variant is "jury built," or even "jerry-built" but all terms and spellings pre-date both World wars by at least a century and have nothing to do with Germans.

I'm just posting this in case the "hate speech" police descend upon us...
 
Another concept to check for: is that piece with the holes threaded into the main diff case and the holes are where some sort of tool bolts and is used to turn piece in or out. Most differentials have some sort of method to move the ring gear carrier into and away for the pinion so as to set the tooth contact pattern and still have preload on the carrier bearings. If you are unfamiliar with all involved with setting up a ring and pinion gear set, find some shop manuals, like for cars with separate rear axle assemblies, and get an idea of what is involved in this operation. It is not just put the gears in and all is ok. I will check back in case you have ???
 
Do you have any Ford/New holland dealers near you ? The older Ford compacts may have a similar design and they may let you look at a service manual.
 
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