Jeds Posted May 25, 2015 Share Posted May 25, 2015 Hi, Awesome site here, looks like a lot of information is held here. My first of many question to come. Just brought home a 1965 B 61 twin screew I has the 5 speed main but it seems like the aux is a 3 speed it will not shift over left and up. Could this be right? There is no shift pattern plate.ThanksJ Quote Link to comment Share on other sites More sharing options...
Freightrain Posted May 25, 2015 Share Posted May 25, 2015 Sounds like Triplex. Look at drivers side of transmission for model number. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Superdog Posted May 25, 2015 Share Posted May 25, 2015 if it's a Triplex,over left and back is lo,right and back is direct,right ahead is hi, 1 Quote Link to comment Share on other sites More sharing options...
Jeds Posted May 26, 2015 Author Share Posted May 26, 2015 Hi Thanks for the repys. I will see if I can find the numbers on the trans in the next day or so. I will post them when I find them.If it is a triplex is there any combination I should avoid using?My profile pic is a pic of the truck I am asking about.Thanks again for your help.Jim Quote Link to comment Share on other sites More sharing options...
Superdog Posted May 26, 2015 Share Posted May 26, 2015 That's the truck that was in Ottumwa,IA. Where are you located? Quote Link to comment Share on other sites More sharing options...
Jeds Posted May 26, 2015 Author Share Posted May 26, 2015 Yes it is. Just south of town Quote Link to comment Share on other sites More sharing options...
Superdog Posted May 26, 2015 Share Posted May 26, 2015 make sure you bring it to the truck show June 13th at the park Quote Link to comment Share on other sites More sharing options...
j hancock Posted May 26, 2015 Share Posted May 26, 2015 If it is a triplex is there any combination I should avoid using?The gear ratios are fairly progressive. Depending on which transmission number you have, there may be some overlap or redundant gear ratios.Check out this link. Open the pdf up, scroll down with your trans number and it will give the ratios in each gear.http://www.bigmacktrucks.com/index.php?/tutorials/article/37-b-model-transmission-data/ Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
Freightrain Posted May 26, 2015 Share Posted May 26, 2015 If a double OD version things are a bit different compared to single OD version. The model number will tell all.IE: TRT 722 is single over. TRT 7220 is double over. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Jeds Posted May 27, 2015 Author Share Posted May 27, 2015 Thanks for all the information. I will look for the numbers and let you know as soon as I can get them.Thanks again for the help.Jim Quote Link to comment Share on other sites More sharing options...
Jeds Posted May 27, 2015 Author Share Posted May 27, 2015 Superdog, i tried to send you a message about the June 13th show. I don't think it sent it. Quote Link to comment Share on other sites More sharing options...
Superdog Posted May 28, 2015 Share Posted May 28, 2015 Superdog, i tried to send you a message about the June 13th show. I don't think it sent it.I got it and sent a reply. PM's have been hit and miss lately so if you didn't get my response,let me know. Quote Link to comment Share on other sites More sharing options...
Jeds Posted June 30, 2015 Author Share Posted June 30, 2015 Hi Mike, I enjoyed visiting with you at the show in Ottumwa. Hope to see you again sometime. Quote Link to comment 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.