HOrnbrod Posted February 24, 2011 Share Posted February 24, 2011 Going to replace the pinion yoke and leaking seal with the u-bolt style yoke, and just want to be sure on the seal placement. Is the correct orientation side A (with the stampings) to the outside or side B? This seal looks a bit different than the one on the axle now. Pretty sure it's side A to the outside. Am I correct? Image Not Found Image Not Found Image Not Found Link to comment Share on other sites More sharing options...
jimoshel Posted February 24, 2011 Share Posted February 24, 2011 A good rule of thumb on seals is the lip always faces the fluid source. This gives a wiping action on the shaft. Couldn't really tell by the pics but A to the outside looks like it would be correct. Link to comment Share on other sites More sharing options...
jeepdoggydogB Posted February 24, 2011 Share Posted February 24, 2011 Hello Don, From my recollection you are correct, but I couldn't recognize side A as much as I remember side B in the pics. :ack: Link to comment Share on other sites More sharing options...
HOrnbrod Posted February 24, 2011 Author Share Posted February 24, 2011 This is a National seal p/n 39118-2; came from Randy's with the new u-bolt pinion yoke. I also have a Timkin seal for the same application that looks different. Same dimensions though. Link to comment Share on other sites More sharing options...
mule13 Posted February 24, 2011 Share Posted February 24, 2011 whichever side the little spring wraps around the seal on goes inward or toward the oil source look for a little spring thing on the lip of the seal Link to comment Share on other sites More sharing options...
HOrnbrod Posted February 24, 2011 Author Share Posted February 24, 2011 Okay - looked a little closer with a magnifying glass and the National seal has the spring on the lip; the Timkin seal doesn't. I'll use the National seal then. And the leaking seal on the pinion shaft has no spring either. :dunno: Link to comment Share on other sites More sharing options...
jeepdoggydogB Posted February 24, 2011 Share Posted February 24, 2011 Hello Don,From my recollection you are correct, but I couldn't recognize side A as much as I remember side B in the pics. :ack: Don,I used the Timken seal, if it means anything after all the B.S. I went through (as you have) with seal leaks and bent axles, this was the last seal or anything else for that matter I had to replace on my Dana 44. :banana: Link to comment Share on other sites More sharing options...
HOrnbrod Posted February 24, 2011 Author Share Posted February 24, 2011 ]Don, I used the Timken seal, if it means anything after all the B.S. I went through (as you have) with seal leaks and bent axles, this was the last seal or anything else for that matter I had to replace on my Dana 44. :banana: Joe, which pinion yoke are you using? The OEM one with the u-joint straps or the HD one that uses ubolts instead of the straps? The OEM yoke that came with the axle I bought had some slight grooves around the seal surface (that's why it's leaking I'm sure), so since I have to replace it I went with the stronger ubolt pinion yoke. AAARG. Should have done it the first time. Link to comment Share on other sites More sharing options...
Automan2164 Posted February 24, 2011 Share Posted February 24, 2011 Side A 100% Rob L. Link to comment Share on other sites More sharing options...
jeepdoggydogB Posted February 24, 2011 Share Posted February 24, 2011 ]Don, I used the Timken seal, if it means anything after all the B.S. I went through (as you have) with seal leaks and bent axles, this was the last seal or anything else for that matter I had to replace on my Dana 44. :banana: Joe, which pinion yoke are you using? The OEM one with the u-joint straps or the HD one that uses ubolts instead of the straps? The OEM yoke that came with the axle I bought had some slight grooves around the seal surface (that's why it's leaking I'm sure), so since I have to replace it I went with the stronger ubolt pinion yoke. AAARG. Should have done it the first time. Don, You are correct, went with the HD that bolts as I had to replace the driveshaft as well when I went SYE on the front. Haven't had any issues since then, but this axle did cost me way more money than I wanted to pay. :ack: Link to comment Share on other sites More sharing options...
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