robert pinto Posted March 26, 2018 Share Posted March 26, 2018 im currently looking for a b model single axle for sale. i am looking at one for sale right now but it has an air clutch and air split shift. i heard these had alot of problems. gentleman that is selling it says theres no issues. should i stay away. can they be made to work well or clutch be easily replaced. Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/ Share on other sites More sharing options...
davehummell Posted March 27, 2018 Share Posted March 27, 2018 My white cabover had a air clutch and it was somewhat touchy. I never used it to shift gears just to take off and you wanted to use 1st gear bobtail or loaded good luck Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395267 Share on other sites More sharing options...
Freightrain Posted April 1, 2018 Share Posted April 1, 2018 (edited) Wonder why a B model would have air clutch? Something unique about the truck? Right hand drive? Edited April 1, 2018 by Freightrain Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395672 Share on other sites More sharing options...
wingman Posted April 2, 2018 Share Posted April 2, 2018 My B65 has an air-clutch and uni-shift 10sp. It was an old Mason-Dixon fleet tractor. All I can say is that it works! Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395688 Share on other sites More sharing options...
Rob Posted April 2, 2018 Share Posted April 2, 2018 5 minutes ago, wingman said: My B65 has an air-clutch and uni-shift 10sp. It was an old Mason-Dixon fleet tractor. All I can say is that it works! If you could post up a couple photos of the air clutch setup as I've never seen one. Thanks, Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395689 Share on other sites More sharing options...
wingman Posted April 2, 2018 Share Posted April 2, 2018 I'll try at some point here when I can. You can only see it from underneath. It is fairly complicated and looks not easy to repair if something goes wrong. It's one of my trucks waiting to be fixed-up and sitting in my barn, and is not on the top of my list to work on yet! Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395694 Share on other sites More sharing options...
Rob Posted April 2, 2018 Share Posted April 2, 2018 I understand fully. The way conventional B series clutch linkage runs I can't imagine how they would route an air cylinder unless there is additional linkage involved. Standard B series clutches, (push type) really don't take much effort so never realized air assist was an option. I see no reference to it in my 1965 TS-442 service manual either. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395698 Share on other sites More sharing options...
Quickfarms Posted April 2, 2018 Share Posted April 2, 2018 Is the air clutch, air actuated or air assist? Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395703 Share on other sites More sharing options...
davehummell Posted April 2, 2018 Share Posted April 2, 2018 On my white it had an air brake peddle on the floor and run a hose to a slave cylinder pushing on the clutch arm. It was 30 some years ago so i hope i remember it right. Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395707 Share on other sites More sharing options...
Freightrain Posted April 2, 2018 Share Posted April 2, 2018 Interesting. I agree, the clutch linkage on a B is simple enough, reliable and not heavy at all. Why would they want to put an air cylinder on it? I just assumed maybe for an Aussie RH drive or something with a real weird engine/trans combination. I know it is more common on early COE. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395711 Share on other sites More sharing options...
cooper 110 Posted April 3, 2018 Share Posted April 3, 2018 I have a 59 B61 single axle with a twin stick 9 speed. Minimal rust for 2500 Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395790 Share on other sites More sharing options...
Maddog13407 Posted April 4, 2018 Share Posted April 4, 2018 only air assist clutches i have ever seen on B models were on Monoshifts and unishifts and yes they were complicated looking. seen them on both 67 and 72 series transmissions Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-395845 Share on other sites More sharing options...
wingman Posted April 13, 2018 Share Posted April 13, 2018 It is an air-assist because you can still push the clutch in with no air built-up, but with more effort. It does have a unishift 10sp. When I get to restoring it, I will have to find another shift knob because the one on it doesn't work. I'm nor sure if I could just put a external air splitter on it like the eatons have. It will be awhile before I get to it because of other projects higher on the list. It runs buts has a bad piston(the guy I got it from was ether happy). I got the parts to fix it and another engine if need be. Quote Link to comment https://www.bigmacktrucks.com/topic/52934-b61-wanted/#findComment-396504 Share on other sites More sharing options...
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