Dana 20 seals

Missing that critical piece to your build or resto?
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trei75bronco
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Dana 20 seals

Post by trei75bronco »

Looking for a Dana 30 front output seal for the yoke and the bearing retainer and input seals.

Trei

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ZOSO
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Re: Dana 20 seals

Post by ZOSO »

I've checked all the parts places and you cant get em. Only place would be BH or other venders.
Rob

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Viperwolf1
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Re: Dana 20 seals

Post by Viperwolf1 »

Seals:
Input shaft seal (double lip)-CR #517383,Napa #NOS 18676, CR #18676 (good seal) (Do not use Timken #473179)
Output shaft seals-Timken #450185
Shift rail seals-CR #6204, Timken #471466
Yoke o-ring-1-1/4"OD x 1-1/8"ID x 1/16". Danco happened to be the brand at the hardware store and it is their #29.
Speedi-sleeve for yokes-SKF99155

Bearings:
Input- SKF #307NRJ
Rear output-Timken #25877 (inner), Timken #15117 (outer)
Front output, J shift-Timken #14116
Front output, T shift-Timken #14131

Cups:
Rear output-Timken #25821 (inner), Timken #15245 (outer)
Front output-Timken #14276 (both T and J)

Shims: 1.20" ID, 1.50" OD

Yoke nuts: 3/4", 16 tpi, top lock


When setting the rear output endplay use a Timken #15118 in the rear position. It is the same size as the #15117 except the inner bore is a couple thousandths larger. This allows you to assemble and disassemble the output shaft without needing a press. Only use it as a setup bearing. Once the correct endplay is set, drop in the #15117 bearing, put the seal on and assemble the shaft.
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trei75bronco
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Re: Dana 20 seals

Post by trei75bronco »

Phil there was a small leak at the front output and I was getting a leak between the tcase and tranny. What would I need and are they at Napa?
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Viperwolf1
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Re: Dana 20 seals

Post by Viperwolf1 »

trei75bronco wrote:Phil there was a small leak at the front output and I was getting a leak between the tcase and tranny. What would I need and are they at Napa?


4 places it could leak near the front output, seal around yoke, gasket under retainer, o-ring under washer in yoke, or bolt threads. Napa should have the seal but probably not the gasket.

Between tcase and adapter or adapter and trans could be gasket or bolt threads. I'd try to reseal the threads before taking anything out.
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trei75bronco
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Re: Dana 20 seals

Post by trei75bronco »

I never put a rubber washer on when the front yoke got bent. Guess I will start there i
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