10 bolt Pontiac rear end. Question re: axle bearings - Chevelle Tech
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post #1 of 25 (permalink) Old Jan 10th, 20, 8:47 PM Thread Starter
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steve
 
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10 bolt Pontiac rear end. Question re: axle bearings

I bought a 3.23 non posi one legger rear end from a friend. He replaced the bearings a few years ago and changed the fluid and replaced the cover gasket. No leaks and no noise while driving. He put a LS3 in a 64 Tempest and pulled this 3.23 out of the Tempest and put in a 9 in Ford rear end in its place.

So I pulled out the axles and the bearings look and turn like they should No weird metal on metal feeling, the bearing spin by hand slowly and tightly.

How does one go about Checking the bearings in a used rear end? Or run it and see how it sounds?
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post #2 of 25 (permalink) Old Jan 10th, 20, 9:07 PM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

if it was in a running car without issues, just bolt it in and dont look back. jim

Jim

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post #3 of 25 (permalink) Old Jan 10th, 20, 10:19 PM Thread Starter
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

I totally agree Jim. But Im just curious to here opinions on how to diagnose there quality if you didn't have a good history. In other words do you just replace them now very time you pull out the axles? For a Pontiac axle I think they have to be pressed on/off and they aren't cheap either...
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post #4 of 25 (permalink) Old Jan 10th, 20, 10:56 PM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

Quote:
Originally Posted by Jim Mac View Post
if it was in a running car without issues, just bolt it in and dont look back. jim

Exactly!!!!!!!!!!!!!!!!!!

By the way, is that a 10.5 BOP style rear with NON C-clip axles?

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post #5 of 25 (permalink) Old Jan 10th, 20, 11:23 PM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

If it did not make noise and drove fine, your good to go. I just replace bearings when they make noise.

Your just jealous because you can't hear the voices!

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post #6 of 25 (permalink) Old Jan 12th, 20, 4:50 AM Thread Starter
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

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Originally Posted by DZAUTO View Post
Exactly!!!!!!!!!!!!!!!!!!

By the way, is that a 10.5 BOP style rear with NON C-clip axles?
Its a 8.2 inch 10 bolt, stock for a 64 Tempest/Lemans GTO.


So I pulled off the tires. Then the two brake drums. And low and behold the right rear brake cylinder is leaking. Why is it that one thing always leads to another with these old cars?

After noticing that I pulled off both axles. This rear end doesn't have C clips like my Chevelle's. The axles were held in by axle retainers ( 4 bolts) at the axle flange. Upon inspection one of the bearings is a bit loose and I will replace them both now. But I've Never have done that before. Went to the local parts store (Oreily's) and they don't press bearings there. Im in a sort of small town. Decided to go to Harbor freight and bought the 20 ton press they have there. Gonna try to tackle this myself.

So now for all the pros out there that have replaced rear axle bearings have any advise/pointers/pearls of wisdom? Like heating the old bearing so it expands and pulls out easier? Is there a video out there showing a how to press out bearings? There is a thinner collar and thicker bearing on both axles. Can they both be pressed out at the same time? Cause I haven't tried to pry the 2 apart from each other...

Whats scary is with the LS1 motor Ive had the car over 100 mph on 55 year old wheel bearings. And have driven 1200 miles in the past few months without a hiccup.
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post #7 of 25 (permalink) Old Jan 12th, 20, 10:51 AM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

cant help on the bearing Rand R.. but these old axles are pretty stout. Ever pull a worn axle out and just shake your head looking at the groove left in there thinking "what was GM thinking?" jim

Jim

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post #8 of 25 (permalink) Old Jan 12th, 20, 10:58 AM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

Since your replacing the bearings, you might as well do the seals. They are inside the axle housings. You can also replace the spider gears with a lunch box locker and make it a posi.

Your just jealous because you can't hear the voices!

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post #9 of 25 (permalink) Old Jan 12th, 20, 11:10 AM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

Use a hammer and chisel and hit the retaining ring hard in several places. This will stretch it and make it easy to remove. Then you can press them both off together. I'm going to have to remove the axle bearings in my 9 inch again to remove the brake caliper brackets. I don't enjoy removing axle bearings.


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post #10 of 25 (permalink) Old Jan 12th, 20, 12:46 PM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

Hi
What type of variation is the bearing. One of the BOP variations is the bearing plate [held by 4 bolts ] then a seal then a bearing then a retainer collar. Tapered roller . All of these are pressed on the axle .

To remove
remove roller cage with screw driver and hammer
cut half way thru bearing inner race and collar with grinder disc then either press off or chisel off [cutting first helps release the grip on axle ]
pressing off is an option also
To get the outer race out off the housing either use slide hammer with hook OR mig weld bearing and it will shrink/goes loose OR use 2 large screwdrivers

to install
Dummy assemble
with axle plate and seal and bearing
install and measure end float spec is .010 end float
once correct press on collar
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post #11 of 25 (permalink) Old Jan 12th, 20, 1:05 PM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

IF, just IF, your bearings are the style that are pressed onto the axle and then have an addicional lock ring pressed onto the axle to provide better retention of the bearing, DO NOT, repeat, DO NOT press off the lock ring!!!!!!!!!!!!!!!! Do just exactly as Freddie said (Big Gear Head) explained------------as I've shown below.


First, with a chisel and BIG hammer (it MAY be necessary to use a die grinder and thin cutoff wheel to notch the lock ring), partially split the lock ring. It should then easily slide off. THEN, you can press off the bearing.


Also, last, if this is the style axle bearings that you have (with lock ring), DO NOT, DO NOT, DO NOT, press on the bearing and lock ring together. Press on the bearing FIRST until it is fully seated. Then press on the lock ring.
The above method is what was used on 55-64 Chevys and 56-62 Corvettes. I have replaced MANY of these bearings in the past 55+yrs. This is the method shown in the Chevy Service Manual and it works just fine.


OH YA, DON'T FORGET TO PUT THE BEARING RETAINER ON THE AXLE BEFORE PRESSING ON THE BEARING!!!!!!!!!
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big gear head, 71350SS and LeoP like this.

Tom Parsons
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post #12 of 25 (permalink) Old Jan 12th, 20, 2:26 PM Thread Starter
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

Ok well Tom's Post (above) is very helpful as that is very similar to my axle setup . My question is now WHAT is that split ring tool called? The tool in the lower left photo. Who sells it? The one that clamps either around or behind the bearing?

Also is Timkin a good brand of bearing? Chinese quality? For these Pontiac rear ends the bearings they recommend are the RW507CR by National. Any rear end rebuilders here have bearing. I wish there was a kit with new seals , bearings, flange gaskets and lock collars...
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post #13 of 25 (permalink) Old Jan 12th, 20, 2:49 PM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

Harbor freight sells an inexpensive kit.
https://www.harborfreight.com/bearin...c3a0b1418547e9

Your just jealous because you can't hear the voices!

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post #14 of 25 (permalink) Old Jan 12th, 20, 4:18 PM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

The tool is a bearing separator. Timken is a good brand of bearing.


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post #15 of 25 (permalink) Old Jan 12th, 20, 5:22 PM
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Re: 10 bolt Pontiac rear end. Question re: axle bearings

You might want to check out the tool section of ebay motors for tools like that.Many times quality tools are sold for a fraction of the price that SnapOn, Mac tools,Craftsman and Matco would charge.Of course it won't be as easy as driving to your closest tool store but you could end up with a much better tool for you efforts.

John
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