RE: [Chrysler300] Rear Axle end play shims

Wow! This brings back bad memories! The first time I had a problem was a customers 300 L convertible. I had led a charmed life until that day. I pulled the right rear axle to replace leaking oil seal and the thrust pin dropped into the lower housing. I fished it out after a long trial and error tool changing strategy.
[These are normally held in place with a roll pin through the center.] The roll pin had broken and the pin almost followed the axle out. After the seal repair I attached the pin to the axle end with heavy fibrous grease. This actually worked.

To: jkg@xxxxxxxxxxxxxxxxx; dave.dumais@xxxxxxxxx
CC: Chrysler300@xxxxxxxxxxxxxxx
From: Chrysler300-noreply@xxxxxxxxxxxxxxx
Date: Tue, 5 May 2015 15:47:51 -0400
Subject: Re: [Chrysler300] Rear Axle end play shims

Here is information on the Sure Grip spacer pin:

http://www.chrysler300club.com/how/ax/sgax.html

On 5/5/2015 3:33 PM, 'John Grady' jkg@xxxxxxxxxxxxxxxxx [Chrysler300] wrote:

Hi Dave,

No, these look like small roof nails, about 3/16 stem, about 3/8 head (guess) ; they fit into holes drilled in center of “thrust block” in middle of differential( see shop drawing in book); they make a bearing for the end of axle , when it pushes inwards (the two axles do not always turn same speed); when you adjust shim pack, you push axle against this nail head , through wheel bearing/shim , and thrust block ,(can move sideways) to other axle ; both axles can move side to side, I think it is .013 free play. Or else timkens are not opposed and set up right, supposed to be like front wheel bearing. . So you set this up from one side.

You pull an axle, the head of the nail momentarily sticks to end, pulls it out of its hole, as you move axle out away from block ,it then drops off . when you put back , you are missing maybe .100 of stuff, you cannot get lash out ; guys remove all the shims, find it still not right .Cannot be reduced enough to work to the .013, even with no shims at all. So if not aware of all this, they button it up with no shims, you are screwed very shortly. Axles loose side to side, will move up and down too.

You can see them if you shine a light down axle tube with axle out. If you see a small hole instead in a rectangular metal block they are gone ; some of them have I think holes in them (in the head) too, but you then see “head of nail” with hole in it (that tiny hole is how you can replace them on end of weld wire ,if patient and steady hand).

From: Dave Dumais [mailto:dave.dumais@xxxxxxxxx]
Sent: Tuesday, May 05, 2015 3:01 PM
To: jkg@xxxxxxxxxxxxxxxxx
Subject: RE: [Chrysler300] Rear Axle end play shims

John,

Are you referring to the keys located in the tapered end of axle, in the groove?

Dave and the 4spd K

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Posted by: RICK AND DEBBIE CLAPHAM <rixpac@xxxxxxx>

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