Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
ehertzfeld

charging woes

Recommended Posts

ehertzfeld
On my diesel project, the alternator seems to be working properly, but the regulator is not. At idle is putting out 13 volts and a wide open throttle, it's jumps up to 40ish volts! Is it possible that I have the alt spinning too fast? The pulley on the alt is around a three inch and the engine is a four inch. Any thoughts?

Share this post


Link to post
Share on other sites
DMedal
spinning too fast wouldn't do this. I guess if you really spun it too fast the alternator would be damaged. I'm thinking you don't have this connected to a battery as the alternator couldn't possibly put out enough current to raise the battery voltage to 40V. (and you wouldn't want to be around if it did). Check grounds and repeat test with a battery on it. Happy hunting! -Don

Share this post


Link to post
Share on other sites
ehertzfeld
I had a battery installed, but did not hook up the wire that would go to it. I used my dvm to test it. Here is the set up. I guess I'll have to look for a new regulator.
[img]/club2/attach/ehertzfeld/alt1.jpg[/img]

Share this post


Link to post
Share on other sites
DMedal
Elon- Before you replace the regulator, try it with a battery hooked up. Problem is your alternator has no load at all. It probably isn't putting out a steady 40V either but is tricking your DVM with a very noisy signal. With the battery on things will settle down substantially. Should the regulator indeed be faulty the worst that will happen is it will blow the fuse. (there is a fuse on the regulator output, yes?) -Don

Share this post


Link to post
Share on other sites
UCD
If you are useing a one wire alt. with built in voltage reg. you need it connected to a Battery for it to work right. In reality with out it hooked to a Battery it was full fielding because there was no battery there to tell it how much charge it needed.

Share this post


Link to post
Share on other sites
ehertzfeld
Ok I hooked it up and it seems to be working. Battery voltage was at 13.6 at idle and 14.8 at full throttle. The battery is one of my wife puller that we changed out in Maine, so the higher voltage makes sense to me. I only have a few more things to tidy up and she will be put into service! If all goes well, she'll be on the trailer to Colchester!:D

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  

  • Who's Online (See full list)

    • Wilbur643
    • RickS
    • rokon2813
    • MDB
    • NandoG
  • Today's Birthdays

    No users celebrating today
  • Recent Status Updates

    • Paul M.Murphy

      Paul M.Murphy

      Hello glad I got on this site. I hope to upload a couple of photos of my Simplicity Broadmoor 
      Model 707 Tractor. I have replaced all the belts on it and installed a new ignition switch.
      Have a mower deck which was in poor shape , repaced a couple of bushings and welded the
      deck where there was some holes. The tractor and mower deck came from a friend and the 
      mower deck metal was getting pretty thin. Some new metal was put in it and we also undercoated the underside of the deck. This was done by my friend Greg Toulman.
      I have not put the mower deck on the tractor yet, waiting for Greg to come home and give me a hand. Can you please tell me if there is a manual for the mower deck and where I could get one.
      I would also like to get some moon wheel discs as well.
      I will try and down load some photos of the tractor when my wife shows me how to. 
      I really love driving this tractor and also how well it is made compare today's tractors, especially the flexible rear end and the rollers.
      Tell the next time 
      Paul
       
      · 8 replies
    • jbrooks

      jbrooks  »  Talntedmrgreen

      Josh
       
      folowing  this from a link at the downloads.  I just rescued an AC 920 with the lambodini diesel. I can' t download  yet .  Where did you find the PDF copy you posted. . I would like to figure out how to adjust the injection pump. 
      I assume it's a bosche, correct
      · 0 replies
  • Adverts

×