Here are some more

and some more

Bull gear inner bearing and race. Race has a bad spot on it, but looks like it's been that way a while.

Just quickly looked them over, will study closer later this evening.
Gears and bearings in general look pretty good considering but have done there share of dirt grinding. The inner bull gear race & bearing will need replacing. Chips missing on the pinion (but not critical) are usually a result of the bull gear caulking due to loose bearings (outer hub support). May need more pictures of bearing races, end views of roller bearings don't supply any useful information.....later.

OK, got a chance look things over more closely:

The #5 picture in your first batch comes through with a weird looking image of the pinion tooth about to mesh with the bull gear. Is something going on there or is it just the picture angle and reflection.

The pinion shaft race shows a fair amount of wear, don't see any damage but it's not great. I'm sure there is service life left and these would be replaced in pairs....meaning a big job to pull the steering clutches to access the pinion flange and the inside bearing and seal. Would like to see a picture of the outer race that is still in the cover.....from what I can see the rollers look ok.

I don't see any reason to prevent reuse of the gears.

As I mentioned the bull gear inner race and bearing need replacing.

Some of the bearings have been replaced before. The original Cat stuff was usually Timkin and sometimes Hyatt. I believe the Bower units are all aftermarket replacements.

Depending on what you find for replacement parts you might want to consider getting complete assembly with better gears, bearings and may even include good reusable bellows type seals. Otherwise you will have to acquire individual parts, new or good used.

Until you source replacements your kind of limited on what else you can do except replacing the bad race. This can be done by wrapping and clamping some sheet metal around the dead axle and a fabricated sheet metal washer up against the case and placing a heavy welding bead around the inside of the race (not a job for a Harbor Freight buzz box) let it cool then pop it out with a pry bar.

Enough for now:D

Anyone else viewing these posts please add you comments. I'm sure I missed something;)

Thanks Old Magnet, for your time and expertise. On the pinion gear, it's just a goofy picture. Don't know why it came out like that. I'm still waiting to hear back from CCjersey on prices of his parts. I had another guy from this site pm me and say he has hub and sprocket also. Looks like they want $136.00 for the bull gear inner race from heavyquip. That was one of the few part numbers (from my parts book) that I got it to take. In my second group of pictures (top ones on this page) is it the bearing race in picture 3 that you're a little skeptical about? I can't just replace it and the bearing that it seats into (picture 4 same group)?

Yes, that's the pictures. You could change out what you see but you don't have access to the inner bearing and usually these bearings are equally worn and both sides are replaced at the same time. Do you have reason to be going in to the steering clutches at this time?

The problem with those internet numbers, like you can access at Heavyquip is they don't show interchanges and upgrades. You almost have to know what the latest numbers are to get anywhere. You'd have a better chance finding interchange numbers off some of those replacement bearings you have or get standard bearing vs Cat number interchange. For instance the bearing cup you are looking for (7B4956) interchanges to a Bower/BCA (672308). Once your in to the interchange number system then you can expand to other brands based on the interchange number.

The other problem I've found is that there are not many internet sources that will sell bearings directly. Seems these suppliers have the market sowed up and control the prices. Any one out there got a good internet sales source????

Steering clutches work good. Knock on wood.

Here's my parts list as of now:

washer/gaskets: (2) 6B6020
bull gear inner race: 7B4956
bull gear inner bearing: 7B358 (can't find this # anywhere on the net)
castle nut retaining washer: 3F1960
bellows seal: (2) 3B5730 (5H426) or duo cone 8M3992
cement: 5H2471
Gasket: 7F5015
Huge screw: 1F9490
What else?

Your 7B358 is a Bower/BCA 67388 cone
Guess you didn't see the upgrade number for the screw (ya gotta read this stuff) 1F9490 is also a 7H4876 (more current number)
I'll look over you list later, sunny here today, gotta get some stuff done.

The 7F5015 (2) or 6B6020 (2) gaskets will depend on what type of bellow seals you may wind up with. Could be the bellows seals you get with a used hub and sprocket can be reused ( the wear surfaces are replaceable if the bellows units are in good shape). Don't know what the availability of the due-cone set up is.

I recommend that you change the outer pinion bearing assembly now while you have access and change out the inner one later when you have to do steering clutch work. The interchange for the 6B5164 assy. is a Bower BCA #MR1312EHL

You will have to remove the dowel pin retainer in the top of the case to remove the bearing. Do you have the D6 Servicemen's Reference Book that shows this procedure?

Your list looks ok otherwise but you need to go through the parts diagram and pick out the various gaskets and seals.