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Author Topic: REAR AXLE SEAL DILEMMA, 1978  (Read 1202 times)

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Offline 74WagonMeadowGreen

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REAR AXLE SEAL DILEMMA, 1978
« on: February 21, 2012, 03:33:14 PM »
When I first brought my 52000 mile original 1978 Pinto home I soon discovered the rear seals leaked, along with a few other rubber-related items failing. I went about replacing everything questionable with so-far good success. However, I replaced my rear seals with 3214 units. Months later, when replacing the master cylinder and booster, I noticed my NEW seals leaking all over. Since the time I had done that job I learned that although the number 3214 (National, Federal Mogul, etc.) seal is indicated to be the proper replacement, IT IS NOT!! According to dimensions, the inner diameter is listed around 1.3 inches... the true axle diameter at the contact point is 1.25 in. I also discovered that the CORRECT seal is number 3199, with a correct, 1.25 Inner diameter. Please do not make my mistake... use the 3199 if you do not like doing a reseal after only weeks!! This info has probably already been submitted, but I figured a reminder would not hurt!

Offline 74WagonMeadowGreen

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Re: REAR AXLE SEAL DILEMMA, 1978
« Reply #1 on: February 22, 2012, 01:34:53 PM »
One addition... Does anyone know what the difference between a 3199 and a 3199S is? Is there any? According to the Timken book, the physical dimensions are identical... is the "S" a different material?

Offline FB71

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Re: REAR AXLE SEAL DILEMMA, 1978
« Reply #2 on: February 22, 2012, 02:32:07 PM »
most likely a different material. Perhaps silicon instead of nitrile rubber.
Jim

Offline 74WagonMeadowGreen

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Re: REAR AXLE SEAL DILEMMA, 1978
« Reply #3 on: February 23, 2012, 02:47:51 PM »
That makes sense... I figured it might also be Timken's way of leading you to think it was something special just to charge more... S = Sucker !!