oldzy

Curious, how do I remove the old seals/bearing/axle retainers from the axles on my 8.5" corporate rear end? I am not sure what it holding them on. There seems to be a sleeve type thing on the inside of each axle beside the bearings. I have new Moser axles... that sleeve thing is not needed is it?

joe_padavano

The bearings and sleeves are pressed on. The sleeve is the bearing retainer, so yeah, it's kind of needed. If you don't have a press, you need to take the parts to a machine shop.

oldzy

Thx. I assumed that NO old parts (other than axle retainers, backing plates, etc.) would be needed from the rear end/axles, as I got the complete super duper Timken rebuild kit. I also have new Moser axles (30-spline) as mentioned.

joe_padavano

Actually, you don't reuse the sleeves, you get new ones. Usually the old ones need to be cut for removal.

oldzy

ok thx, I thought I had all the NEW parts needed.

507OLDS

The sleeves,or collars,are supplied with the bearings.They are thicker than the OEM pieces.The retainer plates should have come with the axles.They make a thicker style,with an open end,so you can slip them on/off with the bearings already installed.

joe_padavano

Brian, what's the source for these? I've not seen them before.

oldzy

I actually already have my Moser axles and Timken/Yukon rebuild kit. The axles were ordered with the 'access hole' option and studs installed. Nothing else came with them, shipped directly fro Moser. I see Moser makes a slip-on axle retainer. The one I received is a 3/16" rectangular one from JD Race.

My Timken outer axle bearings/seals (A9 and 712146) did not include any collar sleeves. They were separate from the Yukon rebuild kit I received, and I don't recall seeing the 'Bearing Retaining Sleeves/Collars' in the Yukon kit.

It seems I still need to buy the below...

1) 2 x Bearing Retaining Sleeves/Collars
2) 8 x T-Bolt/Nuts (old ones are rusty)
3) 1 x Vent Tube

Where do I get these parts?

oldzy

Not exactly clear pics, but here are my Moser axles w/ 1 3/4" studs

507OLDS

You would have gotten ALL of it from me,and already installed.
The collars come with any/all SET-9/A-9 bearings.They should be there somewhere.
As for the bearing retainer plates,there are a variety of companies that make the thicker ones,with the opening,like Moser,Strange,etc. You shouldn't need to reuse anything from your old axle shafts,so you don't have to bother removing the bearings.

oldzy

Here is what is included in the rebuild kit I got. Are these the bearing collar sleeve things circled in red beside the outer axle (A9) bearings? They just seem like a very large thick spacer. The stock things look really thin and seem to be 'punched in certain spots.













Old axles...



New Moser axles...

monzaz

Yep you ngot them- just what you circled is what retains the bearing and is pressed on last. ALot of people try to press both on at the same time but I do each one at a time to be sure the parts go on correct. The bearing will press on fairly easy as it only has about a .002 press fit. The collar on the other hand is about .003 -.004 press MUCH tighter...So if you add them up together and try to do them both at the same time you get A LOT of banging and pinging when pressing them on...lol. WEAR YOUR SAFETY EYE GLASSES

As Brian stated you do not need any parts from your old axles...Best to leave them alone as you can use them in another rear or sell them. Jim

oldzy

Thanks for confirming.

So all I need now are 8 x t-bolts/nuts (mine are very rusty), new vent tube, and a flange gasket? Stock length t-bolts should be long enough for those 3/16" retainer plates correct?

BTW, I am not doing any of this rear end install stuff myself. I plan on finding the best shop around and have them do it all.

I am still uncertain if I want to have the rear end powdercoated or painted though.

507OLDS

Those are National bearings,which are now another China product.I would definitely press the bearings on separate,THEN the lock collar.The Timkens have a better spec,and can go on together without too much hassle,but those have a tendency to get crooked when trying to press them on all together.
You can reuse your T-bolts that are at the end of your axle tubes.Unless they are badly rusted,there shouldn't be anything wrong with them.

oldzy

No US made A9 bearings?

507OLDS

Timkens still say Made in USA.The Nationals,Federal Mogals,and everything else is somewhere far away.A good honest bearing specialist will still tell you that Timkens still have the best specs to them.That's what I want.Every once in a blue moon,I find some NOS AC Delco bearings,like the original Hyatt's,and I'll buy them up too.
Anyway,it looks like you have everything you need.

oldzy

So Timken does make A-9 bearings? If so, where can I find them?

I still need new t-bolts/nuts though... and possibly that flange gasket and vent tube.

507OLDS

The Timkens are SET-9.Some brands call them A-9,and some call them SET-9.
As for the T-bolts,Inline Tube sells exact originals,and Moser has a version of their own.

oldzy

Do you have any NIB of these SET-9's? IIRC, that is why I was sent another brand (National A9's in this case) b/c the Timken's are not easily available or something? Not sure.

I will get the t-bolts and flange gasket from ILT. I have spent about a few grand already there on bolts and lines, so they should prob just send them for FREE!

What aboot the vent tube? Do I need a new one? If so, where to get?

tx

monzaz

flange gasket not needed... T-bolts can be made from stock grade 5-8 bolts with some creative grinding. (what happened to the old bolts?)
But if you can get it all free. There you go. Jim

Vent tube GM dealership.

507OLDS

The vent tube is GM #01236317. You can get one from The Parts Place for $5.00,or try gmpartsdirect.com .
If you are not concerned with having the exact style of T-bolt,get some grade-8 bolts,and grind one side of the head down,so it slides in & clears the axle tube.Get the lock nuts with the nylon insert.They won't go anywhere.
If the threads on your original T-bolts & nuts are good,I would just reuse them.They will be fine.

oldzy

Where can I get Timken A9 (SET-9) outer axle bearings?

At Moser, they say they are for Jeep. http://www.moserengineering.com/bop-...ken-set-9.html

monzaz

Same bearing...You can not use the same seal though.

You need the 712146 (.490 seal) NOT the 2146 (.460 seal thickness)

JIm

507OLDS

Correct,I install the 712146 seals with all of the SET-9 bearings.

oldzy

So who (Jim or Brian) can get me a pair of Timken A9 (SET-9 or whatever) outer axle bearings?

Unless of course, yall can convince me that National makes a better A9 bearing set.

greenslade

if you heat the bearing and spacer in a oven to about 300 degrees they will proberly drop right down over the shaft, no hammer required.when putting a bearing race into a tube put the race in a freezer it will shrink from the cold and go in much easier.

507OLDS

I offered the Timkens a month ago,with my kit.Any dealer or parts supplier that carries Timken products can get them.I would just use what you have now.I doubt you will ever wear them out since these cars are not driven like they were originally.