Author Topic: 518 OD trans OD bearing "upgrade"  (Read 709 times)

Offline tactransman

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518 OD trans OD bearing "upgrade"
« on: December 18, 2008 - 03:37:54 PM »
A couple of people had questions about the OD section bearing upgrade so I thought I would post the info again.

When the 518 came out in '90,it was a non lock up version till around '91 1/2. The early model version had a 100% failure rate to the OD section bearing due to lack of lube.

Chrysler added this hole to the intermediate shaft around '93/'94,it flows lube oil (fluid) right out to the bearing area that was failing. This hole and larger bearing upgrade should be done to ALL early A500 and A518's that have not had it done to. It usually takes a Cobalt or Titanium drill bit to drill into the shaft to add the hole.


This is the hole that was added.




This is the smaller original bearing



The upgrades larger diameter bearing/retainer.




Side by side comparison.






Terry-tactransman 
Torqueflite/Automatic Transmission Specialist
Union, Mo.
Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.




Offline ntstlgl1970

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Re: 518 OD trans OD bearing "upgrade"
« Reply #1 on: December 18, 2008 - 03:49:01 PM »
Thanks Terry! I'm going to be getting into rebuilding the OD section shortly and this info will be helpful.
70 Cuda, 7.0L Gen-III Hemi, Viper T56 w/9310 gearset, 3.91's, Megasquirt MS3x v3.57, Innovate wideband, Firm Feel upper arms, torsion bars, springs and strut rods, QA1 DA shocks. I did everything on this car except the fancy paint stuff and I drive it...and I can't seem to stop messing with it....

Offline duodec

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Re: 518 OD trans OD bearing "upgrade"
« Reply #2 on: December 18, 2008 - 11:18:56 PM »
I had (sigh) a 1990 W250 with the A518 transmission.  Maybe I was just lucky but the only problem I ever had with the transmission was a hard to seal transmission pan.