41chevy Posted January 27, 2018 Share Posted January 27, 2018 Just bought a TRDXT722 trans/ transfer unit for my B. Can't find any specs or general info on the transfer box on the unit. Any ideas who or where might be? None in WIKI in fact zero on the unit any where so far. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/ Share on other sites More sharing options...
terry Posted January 27, 2018 Share Posted January 27, 2018 Almost have to be a mack I would think,Any mack part no's on any part of it, I think there were some front wheel drive B models. Also could have come out of a real early Dm or R with front wheel drive. terry Quote Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390633 Share on other sites More sharing options...
41chevy Posted January 28, 2018 Author Share Posted January 28, 2018 The entire unit is MACK and I have numbers to ID it, Just can't find any manual or even a parts break down. I'd like to look in it and do anything it may need before I put it in my B mixer. It is the correct unit for my B and I've gotten the driven steer axle and spring kits for the conversion of my mixer to AWD. I'm probably going to have to hit the vintage military vehicle dealers for a DOD tech manual. Paul Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390675 Share on other sites More sharing options...
j hancock Posted January 28, 2018 Share Posted January 28, 2018 Thought I had some info but all I can find is the later series transfer case. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390695 Share on other sites More sharing options...
41chevy Posted January 28, 2018 Author Share Posted January 28, 2018 (edited) 5 minutes ago, j hancock said: Thought I had some info but all I can find is the later series transfer case. Seems the military applications are going to be my best shot for a part list. exploded view. Edited January 28, 2018 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390696 Share on other sites More sharing options...
terry Posted January 28, 2018 Share Posted January 28, 2018 (edited) Is it a supposedly rebuilt or a DuPont overhaul? looks spotless. is there oil in it? Pull front top cover and take a look. terry I'll bet a military version would be the same. Edited January 28, 2018 by terry Quote Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390697 Share on other sites More sharing options...
41chevy Posted January 28, 2018 Author Share Posted January 28, 2018 (edited) Before I bought it the shop pulled the covers off in front of me and the gears and shifter forks and rods are good, had the oil tested and no issues aside from normal usage.Turned to by hand through the gears and no feeling of bearing issues. I want the spec sheet and parts list on the transfer case "just in case". The rest is a standard duplex. I don't like to have something that I have no info on if needs work or adjustment. Plus it's correct for my mixer to be made AWD. Edited January 28, 2018 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390700 Share on other sites More sharing options...
terry Posted January 28, 2018 Share Posted January 28, 2018 (edited) 9 minutes ago, 41chevy said: Before I bought it the shop pulled the covers off in front of me and the gears and shifter forks and rods are good, had the oil tested and no issues aside from normal usage.Turned to by hand through the gears and no feeling of bearing issues. I want the spec sheet and parts list on the transfer case "just in case". The rest is a standard duplex. I don't like to have something that I have no info on if needs work or adjustment. Plus it's correct for my mixer to be made AWD. got to be a rare back box, hope it works for you! terry What would a B model designation be? I believe a front wheel drive in a DM was a DMM. Edited January 28, 2018 by terry Quote Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390703 Share on other sites More sharing options...
j hancock Posted January 28, 2018 Share Posted January 28, 2018 A B-424 is single rear axle "four wheel drive". A B-426 is a tandem rear axle "four wheel drive". 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390706 Share on other sites More sharing options...
terry Posted January 28, 2018 Share Posted January 28, 2018 (edited) Is this trans. going in a diesel, a gas engine would be a smaller series trans? terry Might have spoke to quick, don't know if the big gas engines used the 72 series trans. Edited January 28, 2018 by terry Quote Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390714 Share on other sites More sharing options...
41chevy Posted January 30, 2018 Author Share Posted January 30, 2018 It's matched to a 237 , same as it was mated to in the yard. My mixer is a 1961 B-61 that was a dump converted to a mixer in 1963, when it was a year old by Roanoak Sand on Long Island. It was up dated in 1973 to a 237 with a TRD722L (aluminum case) in it since than.The 722 worked fine until it was retired in 1987. I'm making it a 6x6 so this trans is a direct install. The B 424 and 426 that John Hancock posted, I bid on for the drive trains. Iin fact the 424 has the 722 Duplex in it. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390785 Share on other sites More sharing options...
Freightrain Posted January 30, 2018 Share Posted January 30, 2018 Pretty cool project. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/52335-trdxt722-trans-info/#findComment-390802 Share on other sites More sharing options...
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