Hello everyone. My boss and I are looking to swap out the Eaton 15040s in his 1984 GMC 6000, for a Eaton 22221 2speed out of a 1983 GMC 7000. Both have disc brakes but I have not seen the 2 speed yet, and i know nothing about them haha. Our dump truck has 10 lug/ 20 inch wheels. Will these axles swap, besides going from single to 2 speed, or will we need to change hubs? We would like to keep our wheels if the other axle is different. Thanks in advance!
I did one of these swaps in a gravel truck back in the 80's. Only snag was the 2 speed axle had larger diameter tubes so I had to get new U-bolts and plates to match. As far as I remember I re-used the brakes, drums, and Dayton wheels. 2-speed was electric shift, just added a single wire running back, no big deal. I don't think there was a problem with driveshaft yokes either, but that's something to check.
Thank you. I wouldn't have thought of the axle tube difference. Our truck doesn't have Daytons on it, but i just found out that the 22221 he wants to buy has 10 hole buds on it. So they should be the same lug pattern as our 10 hole 20s?
Yes, all 10 hole buds are the same pattern. Good luck
Good deal. Thanks again!