awstyn Posted March 22, 2023 Share Posted March 22, 2023 I have a Mack GU713 with a Maxitorque T309 and I need to remove the auxiliary housing (the housing that holds the three counter shafts). I hear that there is a special tool made by kent moore that holds the shafts in place so that you can remove the rear auxiliary housing with the transmission still in chassis. Does anyone know the part number for this tool or where to get it? Thanks!! Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/ Share on other sites More sharing options...
Joey Mack Posted March 23, 2023 Share Posted March 23, 2023 The tool numbers are printed in the Mack service manuals. Do you have a T-300 series book? Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527747 Share on other sites More sharing options...
Joey Mack Posted March 23, 2023 Share Posted March 23, 2023 Here is the tool list right from the horses mouth.. 2 copies to be sure you can read it.. T-300 tool list. you dont need all of them.. but if you plan to buy all of them.... a new tranny is cheaper.. Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527764 Share on other sites More sharing options...
terry Posted March 23, 2023 Share Posted March 23, 2023 Wow!! Terry Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527768 Share on other sites More sharing options...
Joey Mack Posted March 23, 2023 Share Posted March 23, 2023 What Terry???? got a question??? Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527769 Share on other sites More sharing options...
Joey Mack Posted March 23, 2023 Share Posted March 23, 2023 I may need to provide pictures of the tool's.. we'll see if he got what he needs.. Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527770 Share on other sites More sharing options...
Joey Mack Posted March 24, 2023 Share Posted March 24, 2023 I know he needs the part number for the plate that holds the counter shafts, so you can pull the rear cover in chassis.. he will also need 4,,. 'Z' brackets to hold the counter shafts so he can remove the main shaft and synchro assembly.. I will try to get pictures when I get home later.. Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527812 Share on other sites More sharing options...
terry Posted March 24, 2023 Share Posted March 24, 2023 16 hours ago, Joey Mack said: What Terry???? got a question??? No just the cost of all them "proper" tools!🤣 Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527831 Share on other sites More sharing options...
Popular Post Joey Mack Posted March 24, 2023 Popular Post Share Posted March 24, 2023 Yes sir.. I figured.. but he doesn't need them, I guess I was just trying to inform him.. at the risk of sounding like an ass.. when the question was asked about what tool is needed to be able to pull the back box, My first thought was.... This is too big of a job for someone who hasn't built one of these tranny's.. at least he has us to help him or deterre him from doing this... With respect,. jojo 3 Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527832 Share on other sites More sharing options...
Joey Mack Posted March 25, 2023 Share Posted March 25, 2023 I knew I had the Mack in-chassis synchro book.. Here are the special tools to do the job. the ''Z'' brackets can be home made, the holding plate costs more for a machine shop to make than it is to buy one.. Good luck,, Jojo Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527926 Share on other sites More sharing options...
mechohaulic Posted March 25, 2023 Share Posted March 25, 2023 is that a "sign" the synchros go that often a book/ manual had to be printed to show how ??? did a lot of rear synchros for RR's don't remember a manual printed. I know the maxi three-counter shaft set up is a rebuild challenge no matter how it's done. Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527929 Share on other sites More sharing options...
Joey Mack Posted March 25, 2023 Share Posted March 25, 2023 The book is 23 years old.. I got it after finishing Tranny school for Mack.. I have 4 sets of tranny and rear end books Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527931 Share on other sites More sharing options...
Joey Mack Posted March 25, 2023 Share Posted March 25, 2023 Im not really sure why a Mack 200 or 300 series synchro would go out early? a lot of the time, the o-rings for the range shifters are not replaced/lubed every few years.. Sometimes I think that drivers flip to 'lo' at too high of a road speed and over speed the rear tranny gears.. I have seen worn clutching teeth, which I relate too slow range shifters due to bad or dry orings.. anyway, I dont know if you have ever been inside a 200 or 300 series Mack tranny.. The synchro is large compared to Eaton or meritor.. I describe it as a 2 sides motorcycle clutch.. I believe there are 14 friction plates and 12 pressure plates, plus a thick thrust washer.. It really isnt hard to repair, but having a book for the first few times is very important.. too many steps, too just 'wing-it'... 🍻 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-527934 Share on other sites More sharing options...
Vladislav Posted April 2, 2023 Share Posted April 2, 2023 Joey, I'm out of likes for today but would like to give my respect to you for that extensive sharing of info and tips on the transmission tools and repair. I have a general T200 overhaul manual but gladly saved the pics you posted on my 'puter. And now I can understand the way people fit the compound with a tranny on a truck. I was told by one of former drivers of my SGT R-models that they removed and put back the compound housing a few times. And had plenty of headaches especially for the first time. Two things I know for sure. They had the job done and they didn't have any special installation tools definitely 1 Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-528380 Share on other sites More sharing options...
Popular Post Joey Mack Posted April 2, 2023 Popular Post Share Posted April 2, 2023 Thank you Vlad.. Back when it was cost effective to rebuild Mack tranny's and rear ends, I built many of them.. I was hoping to get a T-2130/2180 to rebuild last week, but it didnt pan out.. I do try to post accurate info, especially if I have the book.. If you ever have any questions about your T-200 tranny, or need more pictures from the book, please P.M. me.. I would be Honored to help you.. Jojo 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-528381 Share on other sites More sharing options...
Vladislav Posted April 6, 2023 Share Posted April 6, 2023 Joey, thank you for the offer. I have one interesting idea on how to modify T2090 on the ratios to better suit my needs. There seem some difficulties though. I need to play with shafts and gears a bit but that's not a deal of the day. I will make a post about that when able to get to the project. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-528636 Share on other sites More sharing options...
Joey Mack Posted April 6, 2023 Share Posted April 6, 2023 Vlad, I am curious about this idea you have. I have only ever re-built them to original specs.. Quote Link to comment https://www.bigmacktrucks.com/topic/72628-maxitorque-hilow-synchronizer/#findComment-528639 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.