1) you can just mic the bearings and replace.
2) from one angle the friction disc looks fine, but from another angle looks somewhat worn
3) I would take a fine emery cloth if the friction plate is scratched or dirty
4) that type of differential is usually sealed and lubed from the factory ... note, if you feel it is somewhat dry, or in need of a bit more lube to work smoother, I have had good success with spraying a Chain & Cable Lube into the seams and gears, and it seeps into the differential and works itself in just fine.
5) that's a lock nut, and I reuse them ... and I usually keep the same bolts as well

 

Appreciate the comments...
I do not think I will mic the bearings because I would need to do both inside and outside diameters to ensure fitment and I do not have a good mic. I would have preferred a part number for the actual bearing for my comfort level.

The disc seems to be worn more on one side (at the perimeter) more so than the other... will replace it, was only asking out of curiosity.

The friction plate is not scratched, just seems to appear there is a slight film of rubber "build- up" as if the disc "transferred" some material to it. Will do the emery cloth to clean it up.

I do not think the diff is dry. There is residual on the out side with no indications of dryness (like those bad bearings.)

Onthe lock nut, is not that indent a type that is intended to use only one time?

 

I use those lock nuts multiple times with never an issue.

 

do the bearings still roll smoothly? it would be best to just measure the old bearing and search for a new one. if the measurements are common it should be readily available. it may also be worth cleaning the old bearing and seeing if there is a part number on it.

 

No, the old bearings are shot.

I did not look for a part number because I assumed I could easily identify it from my parts manual for bearing only... But it shows the whole assembly as one part number. I will look closer tomorrow to see if I can find one.

Guess I could trace a bearing as long as I can align the scribe perfectly down to the cardboard. If I were to do that and measure as close to 1/16 of an inch, would that dimension be "common" (or) close enough to source a bearing?
...or are we talking needing something in the 1/32 or 1/64 range of accuracy?

 

you are over thinking things. measure the axle then measure the outside diameter of the bearing and use those measurements to find a new bearing. ariens didn't custom make a bearing for this only

 

Yeah, get yourself a cheap micrometer ... there only a couple bucks, and you'll be using it all the time. Here is one at Harbor Freight for only 1.99 .... no need to spend big money, unless you want to.

 

Checked today and there are no distinguishable markings or part numbers:

But in taking OD of bearing circumference ~6-1/2"
.... and OD of shaft circumference ~3=5/16",
I come up with calculations of about

OD= 2.069"​

ID= 1.054"​

​

Would this sound typical for nominal bearing of 2" and 1" respectively?
I measure ~5/8" width.

Are these shade-tree take off numbers typical for a bearing that I could run with them?
(I would get a caliper but ordering would be about 10 days and I was hoping to order the parts this week.)

I see one that fits this description on McMaster's website:

I would 'prolly want the sealed ones:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

But I can get a 4 pack from amazinon:

Amazon.com

 

I finally got the bearings yesterday, there was a snafu with amazon delivery. I did a quick test fit and these should work OK.

Appreciate the comments to advise to go this route as it is a $120 savings. I have an upcoming deadline on another project so it might be a couple weeks before I get to it, will post an update and pictures then.

 

First time I ever heard of someone measuring bearing circumferences to determine diameter. Seems like diameter is much easy to measure, but whatever floats your boat.

 

Circumstances, circumferences... whatever it takes (LOL.)

It worked out OK so long as I did not need to get to a 32nd or 64th. Last time I needed a mic was years (decades) ago when I needed to be critical on journals.

As per recommendations, I will pick up a micrometer just to have on hand because it is handy for non-critical sizing.

 

I like that $2 mic from harbor freight. Next time I am there, I will pick one up...if I remember.