Mike Sick Posted 22 hours ago Share Posted 22 hours ago Hello everyone , new to the forum. I have a 1984 rs688lst day cab with budd wheels and i cannot seem to match any bearings or find any info on swapping to hub pilot. If anyone has any good info to share it would be greatly appreciated!! Quote Link to comment https://www.bigmacktrucks.com/topic/76496-r-model-hub-swap-budd-to-hub-pilot/ Share on other sites More sharing options...
Geoff Weeks Posted 21 hours ago Share Posted 21 hours ago Info that is going to be helpful is inner cone # outer cone # seal number, brake size. Axle capacity if you know it. That is all I used when changing from stud pilot to spoke. Quote Link to comment https://www.bigmacktrucks.com/topic/76496-r-model-hub-swap-budd-to-hub-pilot/#findComment-593173 Share on other sites More sharing options...
Mike Sick Posted 21 hours ago Author Share Posted 21 hours ago Geoff, i took all of those numbers to mack dealer here in NY and even fleetpride and some other sources and nobody could come up with anything to match so i could go to hub pilot, im unsure of what else im able to do at this point Quote Link to comment https://www.bigmacktrucks.com/topic/76496-r-model-hub-swap-budd-to-hub-pilot/#findComment-593174 Share on other sites More sharing options...
Geoff Weeks Posted 20 hours ago Share Posted 20 hours ago Well, I took that info and went to a junkyard when I was doing my swap. Eaton and Rockwell (Meritor) used common wheel end parts so the bearing and seals as well as bearing spacing were the same. I know Spicer (IHC) use different bearings and spacing on their 12K steers. I have no idea what Mack uses. A junkyard is likely a better place to go than the dealer and new parts. They often know interchange info. In my case hubs off a Ford would work if I changed the outer bearing. In my case the rear axle were common 40K Eaton and IHC's which all take the same stuff as Rockwells also at the 40K level.  What rears do you have? What front (steer axle) do you have. Hub Pilot came into being ten years after your truck was made, if the axle models were still in use in the 1990's then you have a good chance that the hubs are available. Many of the Mack's I worked on had heavy front axles, so 5x 16.5 or larger brakes, and heavier bearings than the 12K axles on my tractors. Quote Link to comment https://www.bigmacktrucks.com/topic/76496-r-model-hub-swap-budd-to-hub-pilot/#findComment-593179 Share on other sites More sharing options...
Mike Sick Posted 6 hours ago Author Share Posted 6 hours ago Thank you for that info, i was trying to stay with mack but now that you mentioned that it makes alot more sense to me and i believe i have the perfect place to go searching. I do need to do more research on what exact axles i have but i believe the rears are 38k on neway air and i do not know about the front. Thank you for giving me that advice, im going back to my shop tomorrow so i will let you know what i find. Quote Link to comment https://www.bigmacktrucks.com/topic/76496-r-model-hub-swap-budd-to-hub-pilot/#findComment-593203 Share on other sites More sharing options...
Geoff Weeks Posted 5 hours ago Share Posted 5 hours ago Are the rears Mack (Top loaders, center section bolt in from the top, or front loaders, bolt in from the front)? Quote Link to comment https://www.bigmacktrucks.com/topic/76496-r-model-hub-swap-budd-to-hub-pilot/#findComment-593205 Share on other sites More sharing options...
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