jdazimuth Posted June 24, 2009 Share Posted June 24, 2009 Looking to put a pto on my 77 MB, 237 with a TR720 5 speed. Single speed should be fine for a dump. Hoping to find original instead of going new muncie route. If anyone has part numbers, leads on purchasing and or tips to installing I would appreciate the help. Thanks and great forum.John Quote Link to comment https://www.bigmacktrucks.com/topic/9844-5-speed-pto/ Share on other sites More sharing options...
HK Trucking Posted June 24, 2009 Share Posted June 24, 2009 Looking to put a pto on my 77 MB, 237 with a TR720 5 speed. Single speed should be fine for a dump. Hoping to find original instead of going new muncie route. If anyone has part numbers, leads on purchasing and or tips to installing I would appreciate the help. Thanks and great forum.JohnA 77 MB with a 237 should have a TRL107 or TRL1076 or 1078 if it's a 5 speed.Pull the plate off the PTO opening in the side of the trans and make sure there is a PTO drive gear in there, I've seen some that didn't have a PTO drive gear from the factory.Not a big deal if there isn't one, you can install a PTO drive gear without removing & disassembling the trans. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/9844-5-speed-pto/#findComment-37136 Share on other sites More sharing options...
David Posted June 24, 2009 Share Posted June 24, 2009 I've seen some that didn't have a PTO drive gear from the factory.Tanker companies would spec this gear deleted just to save 2 pounds. Quote Link to comment https://www.bigmacktrucks.com/topic/9844-5-speed-pto/#findComment-37139 Share on other sites More sharing options...
Superdog Posted June 24, 2009 Share Posted June 24, 2009 I have a PTO off a 77 MB685 garbage truck.It had a TRL1076 5 speed 1 Quote Link to comment https://www.bigmacktrucks.com/topic/9844-5-speed-pto/#findComment-37141 Share on other sites More sharing options...
jdazimuth Posted June 24, 2009 Author Share Posted June 24, 2009 Thanks all. It is a TR722. Don't know why. This is the same problem I am having with local yards, they are insisting that it is a 107. It is a single shaft, cast iron, and has 722 stamped right above the tetroid gear logo right behind and above the left side pto opening.John Quote Link to comment https://www.bigmacktrucks.com/topic/9844-5-speed-pto/#findComment-37157 Share on other sites More sharing options...
HK Trucking Posted June 24, 2009 Share Posted June 24, 2009 Thanks all. It is a TR722. Don't know why. This is the same problem I am having with local yards, they are insisting that it is a 107. It is a single shaft, cast iron, and has 722 stamped right above the tetroid gear logo right behind and above the left side pto opening.JohnGlider kit, put together with a little of this and a little of that?That 722 would never be installed behind a 237 from the factory.Is the truck a MB685, or is it a MB611 or 609 or 607?If it's a 611, 609 or 607, then it would have originally had a thermodyne engine, which would account for the TR722 transmission, then maybe someone transplanted the 237 Maxidyne engine into it at some point.An MB685 would be factory equipped with a ENDT675, 237 hp Maxidyne, and would have the 107 series transmission.Or, if it is indeed a MB685, maybe it originally had an Allison automatic, and the Allison took a dump (as they usually do), and someone converted it to manual by putting that TR722 in it. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/9844-5-speed-pto/#findComment-37172 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.