Kingmechanic Posted October 8, 2012 Share Posted October 8, 2012 I have a Mack B-61 Thermodyne, will only click when the start button is pressed. I did find out where the solinoids are but i have never seen a set up like thishttps://mail.google.com/mail/ca/?ui=2&ik=626825f0ee&view=att&th=13a3d73a12c23a3f&attid=0.1&disp=thd&zwhttps://mail.google.com/mail/ca/?ui=2&ik=626825f0ee&view=att&th=13a3d69fb3a84f36&attid=0.1&disp=thd&zwhttps://mail.google.com/mail/ca/?ui=2&ik=626825f0ee&view=att&th=13a3d78a31633ecd&attid=0.1&disp=thd&zw Quote Link to comment https://www.bigmacktrucks.com/topic/27707-mack-b-61-thermodyne-starter-issues/ Share on other sites More sharing options...
b61fred Posted October 8, 2012 Share Posted October 8, 2012 is your truck a 24 volt series parallel switch, or 12 volt only. I would start with a good cleaning of the post of the battery. but I bet your parallel switch took a crap, thats not cheap. Quote 15 gears...no waiting! Link to comment https://www.bigmacktrucks.com/topic/27707-mack-b-61-thermodyne-starter-issues/#findComment-140843 Share on other sites More sharing options...
Kingmechanic Posted October 8, 2012 Author Share Posted October 8, 2012 I think its a 12volt had two 6volt battery's set up parallel to make 12volt. i put new interstate 12volt battery's in the truck one single on the drivers side and two on the passenger side. The one on the passenger side i hooked up as 24volts first, cranked over great but seemed to spin to fast so switched the battery's back to 12volt. worked great for a while then one day went out to start the truck and all i would get was a click from the big solenoid If i kept pushing the start button then both solenoids would kick in then the starter would shutter and try to turn the engine. But assuming i have a bad wire bad solenoid starter is good took it off and checked it. wondering how i can set this system up differently to by-pass this solenoid or where could i find parts. would also appreciate some explanation on how this set up works.Thanks'Jake Quote Link to comment https://www.bigmacktrucks.com/topic/27707-mack-b-61-thermodyne-starter-issues/#findComment-140844 Share on other sites More sharing options...
Superdog Posted October 8, 2012 Share Posted October 8, 2012 unscrew the end cap off your series parallel switch and hold the plunger in to see if it cranks. Quote Link to comment https://www.bigmacktrucks.com/topic/27707-mack-b-61-thermodyne-starter-issues/#findComment-140846 Share on other sites More sharing options...
Kingmechanic Posted October 8, 2012 Author Share Posted October 8, 2012 I unscrewed the cap actuated the solenoid manually worked just fine. where can i get my hands on a new one? Quote Link to comment https://www.bigmacktrucks.com/topic/27707-mack-b-61-thermodyne-starter-issues/#findComment-140852 Share on other sites More sharing options...
bluebonnet Posted October 8, 2012 Share Posted October 8, 2012 Watts, $150.00 Quote Link to comment https://www.bigmacktrucks.com/topic/27707-mack-b-61-thermodyne-starter-issues/#findComment-140886 Share on other sites More sharing options...
daveigou Posted October 8, 2012 Share Posted October 8, 2012 I still have one for salehttp://www.bigmacktrucks.com/index.php?/topic/23732-series-parallel-switch/ Quote See my Flickr photostream page http://www.flickr.com/photos/96692978@N05/ Link to comment https://www.bigmacktrucks.com/topic/27707-mack-b-61-thermodyne-starter-issues/#findComment-140889 Share on other sites More sharing options...
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