Mackman87 Posted June 16 Share Posted June 16 Guys I’m looking at rebuilding my 6 speed in my single axle r model but I’m concerned about the output shaft. Every other truck I’ve had with an Eaton trans always just has a yoke off the out put shaft that the drive shaft bolts to. This speed has like a tube style that has a bolted flange on the out put shaft. Is this a homemade deal that I should replace with a yoke or is this a mack thing? Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/ Share on other sites More sharing options...
fjh Posted June 16 Share Posted June 16 The shaft has to come out the back side after the trans is split! sounds like you have a single disc clutch? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/#findComment-553820 Share on other sites More sharing options...
Joey Mack Posted June 17 Share Posted June 17 can you post pictures of the info stamped into the main case near the fill plug. is this a T 107 twin stick. ? Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/#findComment-553821 Share on other sites More sharing options...
Mackman87 Posted June 17 Author Share Posted June 17 (edited) 16 minutes ago, Joey Mack said: can you post pictures of the info stamped into the main case near the fill plug. is this a T 107 twin stick. ? I’ll have to get all the info but I do know it is a trxl 1071. It has the super low lo hole. Edited June 17 by Mackman87 Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/#findComment-553822 Share on other sites More sharing options...
mechohaulic Posted June 17 Share Posted June 17 I'd say some where in time the hand brake assembly with drum was eliminated. what year truck? is there/was there a hand brake ? Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/#findComment-553824 Share on other sites More sharing options...
Geoff Weeks Posted June 17 Share Posted June 17 1 hour ago, Mackman87 said: Guys I’m looking at rebuilding my 6 speed in my single axle r model but I’m concerned about the output shaft. Every other truck I’ve had with an Eaton trans always just has a yoke off the out put shaft that the drive shaft bolts to. This speed has like a tube style that has a bolted flange on the out put shaft. Is this a homemade deal that I should replace with a yoke or is this a mack thing? The round disk with the bolts is called a "companion flange" and is/ was a popular way to make the transition from trans main shaft to driveshaft. Not home made, but that one is a little odd having so much between the end of the flange and the rear of the transmission. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/#findComment-553825 Share on other sites More sharing options...
Mackman87 Posted June 17 Author Share Posted June 17 8 minutes ago, Geoff Weeks said: The round disk with the bolts is called a "companion flange" and is/ was a popular way to make the transition from trans main shaft to driveshaft. Not home made, but that one is a little odd having so much between the end of the flange and the rear of the transmission. Awesome info, good to know I don’t need to source a new yoke. Are these considered as strong as a non companion flange style mate? (Yoke off output shaft) Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/#findComment-553826 Share on other sites More sharing options...
Geoff Weeks Posted June 17 Share Posted June 17 3 minutes ago, Mackman87 said: Awesome info, good to know I don’t need to source a new yoke. Are these considered as strong as a non companion flange style mate? (Yoke off output shaft) Yes, they are every bit as strong, and a lot of off road equipment use this type, they just take a little longer to dis assemble. Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/#findComment-553827 Share on other sites More sharing options...
fjh Posted June 17 Share Posted June 17 12 hours ago, Mackman87 said: Awesome info, good to know I don’t need to source a new yoke. Are these considered as strong as a non companion flange style mate? (Yoke off output shaft) Actually The Volvo Trash people have gravitated back to a spline version of this setup as of late ! for what ever reason! Something that has mystified me is the use of the types of hard to service drive lines used these days on trucks that are likely to be towed at some point they have made it very hard to remove drivelines for the tow Guys! The flange thing is a good idea in that respect! To bad they that don't make a Zipper for drive lines tow guys would be in dream land!😅 Quote Link to comment https://www.bigmacktrucks.com/topic/74278-mack-twin-stick-6-speed-issues/#findComment-553857 Share on other sites More sharing options...
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