D2Denny Posted July 26, 2022 Share Posted July 26, 2022 Started replacing the Drive axle wheel seals in my G with a RADL 515 axle. When I pulled down the right side, I was surprised to find 2 seals in the hub. One in the normal position and one in the center of the hub separating the inner and outer bearing chambers. It appears that the inner wheel bearing is sealed off from any oil supply other than what is placed in the hub when installing the entire assembly. Is this correct? The seals are Trostel #'s T55173 and T55068. My old school NAPA dealer searched through all his old catalogs and couldn't cross these over to a current part number. Anybody happen to have current seal part numbers for these? If not, I'll be off to my local bearing supplier. Also, the days are long gone when I could hump on and off a hub and drum assembly by myself. Thought about it the night before and came up with the idea of using my homemade mechanic's seat. I Screwed a couple of plywood slats the seat, ginned up 2 "clips" to bolt the hub to the slats, and used a bottle jack under the axle housing to match the height exactly. The hub and drum assembly slid off easily and safely. Will be able to reinstall easily without damaging the seals. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/70175-wheel-seal-part-numbers/ Share on other sites More sharing options...
terry Posted July 26, 2022 Share Posted July 26, 2022 Yeah years ago the inner bearing was packed with grease with a seal in the middle of the hub, the outer was oil fed from the rear end, most guys just elimidated that middle seal and fed both bearings with rearend oil, can't help with the proper seal number if you go that route. terry Quote Link to comment https://www.bigmacktrucks.com/topic/70175-wheel-seal-part-numbers/#findComment-504322 Share on other sites More sharing options...
Joey Mack Posted July 26, 2022 Share Posted July 26, 2022 as far as the inner seal goes... A year and a half ago I re-sealed a B-61's drive axles.. I did not install new center seals. I cleaned the axle end of the hubs really good, and just put inner seals in, and I used Mack Gray RTV for the axle caps, and so far no leaks on either side.. Oil is now getting to the outer bearing.. This truck was a working dump truck for 1 year after I did this repair.. now its a museum piece... LOL jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70175-wheel-seal-part-numbers/#findComment-504323 Share on other sites More sharing options...
h67st Posted July 26, 2022 Share Posted July 26, 2022 To find my wheel seals, I went online and you can look at an SKF (CR) wheel seal catalog, they have dimensions in there so you can measure your old seal and match it up. Once you get the SKF number you can cross it over to whatever brand you want. Quote Link to comment https://www.bigmacktrucks.com/topic/70175-wheel-seal-part-numbers/#findComment-504374 Share on other sites More sharing options...
Popular Post Joey Mack Posted July 26, 2022 Popular Post Share Posted July 26, 2022 If your luck is anything like mine,, where ever you pry with the seal puller, the part number on the back side of the seal will be damaged by the puller.. even when I pry in only 1 spot,, 🤔 1 3 Quote Link to comment https://www.bigmacktrucks.com/topic/70175-wheel-seal-part-numbers/#findComment-504379 Share on other sites More sharing options...
D2Denny Posted July 27, 2022 Author Share Posted July 27, 2022 Wow, lots of tribal knowledge here. Just the info I needed. Thanks Terry and Joey. I'll ditch the inner seal and I think I have zeroed in on a CR seal that will work. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/70175-wheel-seal-part-numbers/#findComment-504456 Share on other sites More sharing options...
6368 Posted July 30, 2022 Share Posted July 30, 2022 Should be your info under #52 Quote Link to comment https://www.bigmacktrucks.com/topic/70175-wheel-seal-part-numbers/#findComment-504834 Share on other sites More sharing options...
D2Denny Posted August 1, 2022 Author Share Posted August 1, 2022 6368 thanks for taking the time to look this up. However, the SKF seal listed fits a 4.375 shaft and my axle has a 4.875 shaft. The seal I got is a SKF 48769 Quote Link to comment https://www.bigmacktrucks.com/topic/70175-wheel-seal-part-numbers/#findComment-505088 Share on other sites More sharing options...
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