Re: [Chrysler300] Axle seals

["John Grady jkg@xxxxxxxxxxxxxxxxx [Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>]

I often wondered about this too as other designs use the axle gear lube for the wheel bearings by design . And every rear axle made has the same type timken tapered roller bearings supporting the pinion input and side carrier bearings ; so ought to be fine at wheels too . also heavy oil is better lube than any grease . Putting timkens at axle ends is a great design . ( anyone who has struggled with pressed on GM ball bearings knows) ; maybe they were worried axle oil would not get out there fast enough when new  ? I believe , from memory , when that inner seal fails —as designed now — it can get into brake shoes / drum somehow ( my experience ) .  Runs down backing plate ? 

Maybe they fail as you describe because in fact they have grease not the good oil as used in the diff timkens . 
Not sure we know the real why , but critical that the end clearance is correct and FSM followed -how to check - (  push on other side) . 

There is a section on 300 site about that center thrust pin (s) falling out on sure grips . Not uncommon , can’t set clearance then , too loose . Fooled the guy I bought an early F from ,left by him way loose,  resulted in disaster for me . 

Well known issue to early mopar mechanics in 50’s-60’s .  

Sent from my iPhone not by choice 

On 10 Sep 2020, at 10:53 am, Cox Scooter465@xxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:

You have to pack bearing

Prior to installation.

The inner seal is there to

Keep rear end oil from

Washing grease out of bearings. That was always

The weak point of the

83/4 rear. Inner seal would

Fail and rear end oil would

Wash grease out of bearing

And it would start making

Noise.

Bob Haag

On Sep 10, 2020, at 10:13 AM, Ronald Kurtz mark6268@xxxxxxxxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:

  

Hello, everyone:

I'm setting up parts to reinstall the rear axles on my '59 E. I noticed in the parts manual there are inner and outer seals. I remember cataloguing only the outer seal (CR-15200) when I pulled the axles a couple of years ago. Questions:

If the seal is placed behind the bearing, is the bearing packed with grease by hand before installing?

P/N is 1673-373. Is an after market replacement available?

CR-15200 is virtually non-existent. No luck on E-Bay or similar sites. I do have a couple of outer oil seals from a '64 (P/N 2070788) that have the same dimensions, matching them together, but the seals themselves are of different configurations. Any precautions?

Best,
Ron Kurtz
E #292

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Posted by: John Grady <jkg@xxxxxxxxxxxxxxxxx>

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