JoeH Posted July 1, 2019 Share Posted July 1, 2019 I always assumed the 2 stick Mack trans was the only multi reverse speed trans, apart from Lolo/low/high. What other Mack transmissions can you shift gears in reverse? How recent have these transmissions been produced? I run a concrete delivery company and multispeed reverse is King. My 8LL is junk, hangs up in gear for a second sometimes even when shifter is in neutral. 8ll is good 95% of shifts, other 5% it hangs up going in or out. Quote Link to comment Share on other sites More sharing options...
Rob Posted July 1, 2019 Share Posted July 1, 2019 Even the air shifted single stick six speed Mack transmission can be shifted in reverse. TRDL-107A which is a very good transmission also. I'm going to be pulling a TRDL-1071 from my R-795 pretty shortly. Nothing wrong with it but it needs to go to someone that can use it. 23:1 reduction in low gear. It is two stick. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
jkruss82 Posted July 1, 2019 Share Posted July 1, 2019 Mack has always offered a shiftable multispeed reverse. Below sales specs are the latest models from about 2000-present. Pre-2000 models were T200s with similar 'M' to designate multi-speed revers. T-310M 1361311 9-29-05.pdf T-310MLR 1361313 9-26-05.pdf TM-308M 1361324.pdf TM-309M 1361325 9-26-05.pdf 1 Quote Link to comment Share on other sites More sharing options...
JoeH Posted July 1, 2019 Author Share Posted July 1, 2019 My mechanical e7-350 needs more than 6 gears, it's a dog at 40k-73,280 lbs on most of the hills here even with an 8LL. I'll keep the 8LL til it blows up, but we'll be building another truck in the next few years. Nice to know what options to look for. Quote Link to comment Share on other sites More sharing options...
JoeH Posted July 1, 2019 Author Share Posted July 1, 2019 I want that T310M. Matches my 8LL in overdrive. Quote Link to comment Share on other sites More sharing options...
j hancock Posted July 1, 2019 Share Posted July 1, 2019 Have a Mack 107A. Nice to have extra reverse gears. 1st reverse is pretty slow. Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
JoeH Posted July 1, 2019 Author Share Posted July 1, 2019 That's basically just a 2 stick with an airshift instead of the 2nd stick. Great trans for an old maxidyne, not great for an e7. 2 stick I learned on is a killer transmission though. Can't break it. Quote Link to comment Share on other sites More sharing options...
j hancock Posted July 2, 2019 Share Posted July 2, 2019 Yeah, it is old school. Just agreeing that multiple reverse gears is nice to have. Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
41chevy Posted July 2, 2019 Share Posted July 2, 2019 15 minutes ago, j hancock said: Yeah, it is old school. Just agreeing that multiple reverse gears is nice to have. Plus it is good to see the PAACAR crowd look at you funny when you shift a few times backing up. 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 Share on other sites More sharing options...
JoeH Posted July 2, 2019 Author Share Posted July 2, 2019 14 minutes ago, 41chevy said: Plus it is good to see the PAACAR crowd look at you funny when you shift a few times backing up. Lol someday soon modern trucker crowds gonna look at you funny for shifting gears period! 2 Quote Link to comment Share on other sites More sharing options...
Rob Posted July 2, 2019 Share Posted July 2, 2019 7 minutes ago, JoeH said: Lol someday soon modern trucker crowds gonna look at you funny for shifting gears period! Whole new perspective on the term "Road Ranger" eh? Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
Brian L Blaylock Posted July 3, 2019 Share Posted July 3, 2019 The 12 speed Mack transmission has 6 speeds in reverse Quote Link to comment Share on other sites More sharing options...
JoeH Posted July 3, 2019 Author Share Posted July 3, 2019 So of the transmissions mentioned here what is the best one (or your favorite) for local triaxle dump truck type work? The T310M looks like it matches an 8LL except for multiple reverses. Quote Link to comment Share on other sites More sharing options...
tjc transport Posted July 3, 2019 Share Posted July 3, 2019 triaxle needs an 18 speed. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
JoeH Posted July 3, 2019 Author Share Posted July 3, 2019 1 hour ago, tjc transport said: triaxle needs an 18 speed. Whhaaaaat?? Not around my town. I run a 15 mile (20-25 max) radius in central Bucks County in Pennsylvania. There's only a handful of roads in the area with 55mph speed limits, and I'm never on the PA turnpike. PA triaxles gross at 73280 unless you're pulling a trailer then you're at 80k. I was more so thinking site work dump trucking not highway paving... Quote Link to comment Share on other sites More sharing options...
tjc transport Posted July 3, 2019 Share Posted July 3, 2019 yea, site work you can get away with a 5 speed. buy if you try hitting the road you need a 13 minimum or better an 18 for the hills. nothing worse than catching a red light on the bottom of a hill and trying to get 80k moving up it and end up taking a mile to hit 35 mph. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
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