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Recent content by justsomedude

  1. J

    Cat 420eit Alternator charging problem?

    SOLVED - So after much fooling around I've found that the alternator that was supplied and part matched by number from a 3rd party company is either the wrong part or is not the correct design or faulty. The original alternator is externally excited however the part that was supplied, while it...
  2. J

    Cat 420eit Alternator charging problem?

    With key on engine off I went to the circuit board for the battery bulb. The input voltage for the bulb is the same as the battery through wire 133rh1 but where it outputs from the circuit board onto 309rh72 it’s only 2.8v. From what I understand I should be expecting 12 or somewhere around...
  3. J

    Cat 420eit Alternator charging problem?

    Ok that makes sense. I was definitely reading the flow of electricity wrong here. I will dig into that side console and see if one of the connectors is oxidized and causing voltage loss and a couple other tests now that I understand that circuit better.
  4. J

    Cat 420eit Alternator charging problem?

    Hi Edgephoto. I really appreciate the help here. 1. when the engine is running the charge bulb is lit up. Seems to flicker a little though. i did note that when i ran a wire from the battery to the exciter post and measured the output it seemed high 14.8 - 15v which maybe supports a bad...
  5. J

    Cat 420eit Alternator charging problem?

    Ya that’s what I’ve been looking for but it does not seem to exist on the machine itself. Should be a grey wire and a white wire going to a cylindrical endpoint.
  6. J

    Cat 420eit Alternator charging problem?

    Hi Nige! ya i was looking at the parts manual and was a little disappointed that there isn't a call out on that diagram that shows where that component lives. It must not fail very often i guess. I've been working off of the wiring schematic you directed me to previously when troubleshooting...
  7. J

    Cat 420eit Alternator charging problem?

    yep thats the part i have been looking for. I was expecting it to be close to the alternator but i cant seem to locate it. The area above the alternator just has wiring for coolant temp and the area below seems just to have wiring for the AC compressor and the horn. The wiring schematic seems...
  8. J

    Cat 420eit Alternator charging problem?

    So i have been looking into this and the only thing i can think to do is test the excitation resistor (238-9397) or check the connection in case its bad and causing voltage loss but i cant locate where it is. I've been digging around in the wiring for days now trying to find it with no luck at...
  9. J

    Cat 420eit Alternator charging problem?

    2010 Cat420Eit DAN00662 Charge light on / no tach / battery voltage only I replaced the alternator but it seems like its not charging / no tach. with the key on motor off the exciter post reads 2.6v. I touched a wire from the battery to this post with the motor running and the charge light...
  10. J

    On road question

    Ya i think a chain is a good idea. I don't think its likely that the large general purpose bucket will bounce out but it only takes an extra minute to put a chain on it and lots of crazy unexpected things happen every day.
  11. J

    On road question

    mine used to have a mirror but the fella that used to operate it removed it. I'll have to get another one. Freaks me out a bit to not be able to see when someone is going to try and pass me given how much the machine wants to be all over the lane.
  12. J

    On road question

    As a new guy its practically a guarantee that i will lol.
  13. J

    On road question

    Thanks for the reply to what probably seems like a dumb question.
  14. J

    On road question

    Hello everybody! This may seem like a stupid question but I'm pretty new to using a backhoe. So far I've spent far more time fixing them then using them. I have a cat 420Eit. I have 2 front buckets for it. The snow bucket is slightly wider then the general purpose bucket and its possible to...
  15. J

    Stabilizer auto up detent doesn't hold control

    Hi HarleyHappy. Thanks for taking the time to post your thoughts. I did end up finding this relay. It was tie strapped in place just below and to the right of the fuse panel. Found it by touching the controls and feeling for which one was clicking. Attached is a snip of the parts manual with...
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