• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

alternator

  1. A

    ASV PT100 Tachometer not Working and Hour Meter Wiring

    I have a 2008 ASV PT100. Thankfully, I was able to find a wiring diagram on this site which has helped me a lot. Many thanks to whoever posted it! The unit has an "interesting" past and I've spent a lot of time diagnosing and fixing problems and past mistakes. The diagram shows the gray...
  2. A

    ASV PT100 Tach Not Working

    I have a 2008 ASV PT100. Thankfully, I was able to find a wiring diagram on this site which has helped me a lot. Many thanks to whoever posted it! The unit has an "interesting" past and I've spent a lot of time diagnosing and fixing problems and past mistakes. The diagram shows the gray...
  3. T

    2004 Cat 287b not charging

    After reading several posts on this topic, im still scratching my head. Ive replaced the battery and alternator, as this is a well used machine. With the key in the ON position, i have voltage on 2/3 pins on the back of the alternator. It is 1V lower than the battery. My hour meter has also...
  4. H

    CAT 259b3 Hour Meter Continues To Run When Key Removed

    Hi all, I've got a CAT 259b3 (serial number YYZ03203) with an hour meter that continues to run even with the key removed. Does anyone happen to have a wiring diagram? I've done some research, and it seems like it's going to be a wiring and/or alternator issue, but I haven't been able to find...
  5. J

    kubota kh new alternator overcharging

    Hello, I could use some help figuring out what's going on with a new alternator I put in my kubota kh70 excavator. The old alternator wasn't putting out any juice. I took it apart and the rotor showed open circuit between the slip rings. So I bought a new cheap one off amazon. Installed it, a...
  6. P

    JCB 407bzx dim charge and warning indicators...

    We are working with a 1999 JCB 407 that was purchased used. A few weeks ago, we replaced the alternator, starter and battery because we were having constant starting and charging issues. Measuring voltages at battery, never increased when running... if anything slowly decreased. Since...
  7. C

    1997 GMC bucket truck Kubota pony motor alternator bracket

    Hello. I bought a 1997 GMC C7500 bucket truck that is totally missing the alternator bracket for the 3 cylinder gas Kubota pony motor that can be used to run the hydraulics without running the GM 6.0 gas main engine. There is very little information on the internet and I've seen different...
  8. N

    555e Alternator Wiring

    Hey everyone I am looking for advice on wiring a ford/new holland 555e alternator. The OEM setup is for a 3 wire alternator and that is what is currently on it. When I bought the backhoe the alternator was not charging so I was manually charging the battery and not shutting it off when I ran it...
  9. A

    Bobcat 331 not charging

    New to the page. I have a 2004 bobcat 331 that I purchased and am starting to regret buying a used machine lol. The alternator is not charging on the machine. I checked all the fuses they are good. Checked belt tension and had alternator tested good. This alternator has 2 wires coming off the...
  10. W

    Volvo BL 70 wont charge and now not starting

    At first we had issue with the battery not charging so we ended up replacing the alternator at the recommendation of the shop we took it to have work on it. That did not solve the charging issue. We replaced the battery. I started better but still didn't charge. Any ideas where to start on...
  11. C

    CAT 287B Alternator is good, but isn't charging

    CAT 287b, unknown year (I think around 2010?) Serial number ZSA02652 Battery won't charge.. New battery, alternator tests at 14v output on the bench, but once it's in the machine it doesn't charge the battery. If I disconnect the alternator from everything while the machine is running, I only...
  12. D

    Cat 259d low voltage

    I keep getting a low voltage message on machine replaced the battery message went away for couple days than came back, tested the battery it was good so replaced the alternator and voltage went back up to around 14.2v for about 2 days now its dropping below 11v with the error message and wont...
  13. M

    Cat IT 28 Loader altenator help

    Hello all, Im having an issue with the charging system on Cat IT 28 loader. The operator ran it last week not noticing till the end of the day that the alternator light flashing on the dash an killed both batteries. The batteries and alternator have all been replaced but there is still a no...
Top