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Thread: Prorock 44 leak(s) Need Help

  1. #11
    Caught the Bug
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    Thanks Exodus! I greatly appreciate this. I am waiting on Dynatrack to see if they will help. They have been a good company so I am optimistic. I do have a good local shop owner who is also in my corner now so I am hoping it is done soon. I need to have some Jeep therapy. Thanks again my friend!!

  2. #12
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    Ok the oil on top of the pumpkin was grease that melted when it got hot. The axles seals from RCV were as my mechanic buddy said were not the best for this application, he replaced both with a double lip design as opposed to the single lip that was shot. Dynatrac is Awesome. Very responsive company and in the end none of this was a Dynatrac issue. I am really at ease knowing that they are very concerned for their customers and have a solid product. So I am back on the trail/road again and the world is right! Happy 4th all.

  3. #13
    Meme King WJCO's Avatar
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    Quote Originally Posted by Captain Ed View Post
    Ok the oil on top of the pumpkin was grease that melted when it got hot. The axles seals from RCV were as my mechanic buddy said were not the best for this application, he replaced both with a double lip design as opposed to the single lip that was shot. Dynatrac is Awesome. Very responsive company and in the end none of this was a Dynatrac issue. I am really at ease knowing that they are very concerned for their customers and have a solid product. So I am back on the trail/road again and the world is right! Happy 4th all.
    That's great to hear and thanks for reporting back to us with the solution.
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  4. #14
    Knows a Thing or Two A.J.'s Avatar
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    Awesome! Good to go!


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  5. #15
    Been Around the Block doubletapdaddy's Avatar
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    Glad to hear things worked out well for you.
    Last edited by doubletapdaddy; 07-03-2019 at 03:30 PM.

  6. #16
    Caught the Bug 17xJKU's Avatar
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    I know this post is a few months old, but I recently got the 35 pline deal leak after only 1.5 years and maybe 12k miles. So.. here's what I found from research. Some people say the Dana 60 seal, Spicer 36487, but what I pulled out of mine was a National # 473517. Now, the problem I have is the seals actually wore grooved into my RCV shafts. I was told by RCV and a machine shop to not weld in the grooves and machine them down since they are heat treated shafts. Now RCV said I could machine them down until the grooves are gone, and find another seal that will work.. way too much work in my opinion, but also very pricey to replace the shafts. Okay... now the point of my reply is what I'm considering doing and seeing what everyone thinks. My prorock will not accept a Dana 60 seal due to and adapter that's pressed in to fit that smaller National seal. Not sure why some have it, some dont? The 60 seal has more rubber, more room for flex and deflection. I read on another forum that adapter can be pounded out to fit the 60 seal, but Dynatrac told me they dont recommend it and to put the same seal back in. But I see that seal obviously did not last either, however... there is enough room to fit 2 of them seals back to back if I grind and smooth a small lip on that adapter to meet up with the back stop for the seals. Would anyone recommend that? I will try to add pics to show what I'm talking about. I would think double seal would work great, but I'm no expert, just trying to find a fix for everyone.
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  7. #17
    Knows a Thing or Two Edwrds's Avatar
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    I wouldn’t I’d replace the seal with a new one and just clean up around the grove with very fine sand paper. Or take the seal to a bearing/ seal store and see if they can get you one that will be a little smaller Diameter. Wish I could be more help.


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  8. #18
    Meme King WJCO's Avatar
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    Quote Originally Posted by 17xJKU View Post
    I know this post is a few months old, but I recently got the 35 pline deal leak after only 1.5 years and maybe 12k miles. So.. here's what I found from research. Some people say the Dana 60 seal, Spicer 36487, but what I pulled out of mine was a National # 473517. Now, the problem I have is the seals actually wore grooved into my RCV shafts. I was told by RCV and a machine shop to not weld in the grooves and machine them down since they are heat treated shafts. Now RCV said I could machine them down until the grooves are gone, and find another seal that will work.. way too much work in my opinion, but also very pricey to replace the shafts. Okay... now the point of my reply is what I'm considering doing and seeing what everyone thinks. My prorock will not accept a Dana 60 seal due to and adapter that's pressed in to fit that smaller National seal. Not sure why some have it, some dont? The 60 seal has more rubber, more room for flex and deflection. I read on another forum that adapter can be pounded out to fit the 60 seal, but Dynatrac told me they dont recommend it and to put the same seal back in. But I see that seal obviously did not last either, however... there is enough room to fit 2 of them seals back to back if I grind and smooth a small lip on that adapter to meet up with the back stop for the seals. Would anyone recommend that? I will try to add pics to show what I'm talking about. I would think double seal would work great, but I'm no expert, just trying to find a fix for everyone.
    When I used to work on cars in the shop and a seal would grind into a crankshaft, there were thin metal sleeves that you could get to put over the damaged sealing surface and the seal would ride on that new sleeve. Not sure if you could get something like that. I think it would be hard on that end of the axle though to keep it in place.

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  9. #19
    Caught the Bug 17xJKU's Avatar
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    Quote Originally Posted by Edwrds View Post
    I wouldn’t I’d replace the seal with a new one and just clean up around the grove with very fine sand paper. Or take the seal to a bearing/ seal store and see if they can get you one that will be a little smaller Diameter. Wish I could be more help.


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    There is nothing around this area where I live like that. I may go to the parts store and see if they make a seal that size, but maybe have a double lip. I know these 35 spline shafts are prone to leaking, which I didn't find out until after building it, and I'm just trying to find a fix.

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  10. #20
    Caught the Bug 17xJKU's Avatar
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    Quote Originally Posted by WJCO View Post
    When I used to work on cars in the shop and a seal would grind into a crankshaft, there were thin metal sleeves that you could get to put over the damaged sealing surface and the seal would ride on that new sleeve. Not sure if you could get something like that. I think it would be hard on that end of the axle though to keep it in place.

    IMG_20191005_082952_470.jpg
    Yeah, I would be a little worried if that thing moved inside the housing or off to the smaller diameter of the shaft and cause a huge leak. I put JB Weld in the grooves, and I'm going to sand it down and polish it smooth. I also contacted Dynatrac to see what they recommend, either pound out the after to fit the Dana 60 seal, or grind away that small lip to fit 2 seals. I think the 2 seals bank to bank would be great. Like the OP said, his mechanic put I double lip seal in his. Unless I can find a better seal and not have to grind and double them up.

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