Merle Coggins Posted September 21, 2013 Report Share Posted September 21, 2013 When did they switch from the wide belt to a narrower belt? My truck has the wider belt. This afternoon I installed the generator that I got from Jeff and realized that it has the narrower pulley. Since I don't have my other genny here, it is still at the shop, I couldn't swap pulleys. The wide belt rides right at the top of the pulley groove but it still works for now. It's not right and I won't be putting a lot of miles on it this way, but it'll work for now until I can get my original generator back, or find a different pulley for this one. At least the truck is mobile again for the party. Thanks again Jeff. You're a good friend to have. Merle Quote Link to comment Share on other sites More sharing options...
Jerry Roberts Posted September 21, 2013 Report Share Posted September 21, 2013 I heard that you can use a narrow belt on a wide pulley , but I haven't tried it . Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted September 21, 2013 Report Share Posted September 21, 2013 Not sure when the change happened but my 53 Desoto has the skinny belt. Quote Link to comment Share on other sites More sharing options...
Scruffy49 Posted September 21, 2013 Report Share Posted September 21, 2013 Supposedly was done with the swap to 12v, whatever year that was, 54 or 55... Can't remember right off hand, pulled a 3pm to 10 pm shift yesterday, have a 7am to 1 pm shift today. Almost too tired to read the screen, let alone the Bunn book that has the info. Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted September 21, 2013 Report Share Posted September 21, 2013 not sure the year..not sure any one division of model made the change before another..I have found the marrow belt on 50 model Dodges..also on 52 model Plymouths and would pretty much guess 53 and up would have had the marrow belt..also being used..you never know what some owner may have retrofitted as he had access to a working wide belt generator. Quote Link to comment Share on other sites More sharing options...
Larry Leibhart Posted September 21, 2013 Report Share Posted September 21, 2013 According to Bunn the belt was switched in 1951 on the B-3 series to a "new narrow low-friction fan belt". Quote Link to comment Share on other sites More sharing options...
Jeff Balazs Posted September 21, 2013 Report Share Posted September 21, 2013 Merle; Sorry 'bout dat. We learn something new every day. I have never seen any of the wide belt stuff........but it explains why Quality Power sent my new alternator with a wider pulley even though I ordered it with a 3/8" one. When I called them about it he was confused but sent out the narrower pulley next day. Mystery solved! My 52 truck has a DT engine but it has a later casting date on the block. It is a T342 series, a 54-56 230 engine for what I believe was a heavier truck model than a 3/4 ton. I had assumed that all the bolt on stuff had been transfered straight across when whoever had done the swap. Hope it works OK and you all have a great time today. Jeff Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted September 21, 2013 Author Report Share Posted September 21, 2013 It's good for now Jeff. I think I may have a spare genny stashed somewhere. I'll have to dig it up and swap pulleys with that one. But that's a project for another day. Quote Link to comment Share on other sites More sharing options...
Scruffy49 Posted September 22, 2013 Report Share Posted September 22, 2013 I've got a core 6v with the wide pulley if you need it. Last time had it checked (2008 or so) it was working, now, no idea. Truck hasn't moved under its own power since 1994. Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted October 24, 2013 Author Report Share Posted October 24, 2013 The conclusion to the story... Last weekend I finally dug out my other spare generator only to find it also has the narrow pulley. It has "1951" written on it. I believe I got it with the drive train parts from Denise Tripp after she had a Dakota drive train put into her B3C, so that would make sense. So, now I have to genny's with narrow pulleys. Then today I happened to be passing by the shop where I took my failed generator, so I stopped in. He had it done a while ago but never called me. He said he had to replace the armature and charged me $55. That seemed pretty fair to me. So now I have my original genny back and will probably throw it back in this weekend. However, my regulator seems to have gone missing. I'm sure I left it with the genny when I dropped it off for repair, but he can't find it, and I know I don't have it anymore either, because I've looked for it. Oh well, the one I gor from Jeff works just fine. Thanks again Jeff. I think I'll bolt up the "other" spare first to see if it works. Then I'll install my original / repaired genny. If the other spare works I'll have 2 good spares with narrow pulleys. If anyone needs one just say the word. Merle 1 Quote Link to comment Share on other sites More sharing options...
MBF Posted October 24, 2013 Report Share Posted October 24, 2013 I've been running a narrow belt in my 1 ton since I converted it to 12v years ago-same with my 36 Plymouth. These don't see a ton of miles, but I haven't had a belt issue. Quote Link to comment Share on other sites More sharing options...
Jeff Balazs Posted October 24, 2013 Report Share Posted October 24, 2013 You are very welcome Merle. Happy to help another Pilothouse brother out. Jeff Quote Link to comment Share on other sites More sharing options...
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