Chinese Mini Excavator: Alternator and Charging System Diagnosis and Repair

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  • เผยแพร่เมื่อ 9 ก.พ. 2025

ความคิดเห็น • 45

  • @1cor15_1-4
    @1cor15_1-4 3 หลายเดือนก่อน +3

    I know youre currently deployed but these videos are so helpful- a good wealth of knowledge on the machines. God bless you and return you whole.

  • @kevinhorsley8372
    @kevinhorsley8372 ปีที่แล้ว +7

    Another great video, man. You are quickly becoming the TH-cam authority on these machines. Keep it up.

  • @rustyharrison1717
    @rustyharrison1717 ปีที่แล้ว +3

    Excellent work and information. Your videos regarding this machine, I have the identical model, have helped me begin to understand my machine on a whole new level. Today I’m going to look into how I lube the ring gear and check that the small gear is on there tight. I bought two grease guns so I’m able to grease the two styles. In the process I had a fitting on the arm that shot off when I applied grease. I suspect it’s not been tapped, or it’s improperly tapped. Your oil change vid is another good idea. Waiting for Amazon to deliver. The drain plug sits right over that cross member, so when draining, it runs all over it. Please keep them coming as they will be our proper manuals.

  • @blue68chevelle
    @blue68chevelle ปีที่แล้ว +4

    I’ve been looking at one of these excavators, but I have not yet purchased one. If I do come across one that doesn’t have the cooling fans I plan on installing them but hooking them up through a relay that is actuated by a thermostat control. That way they can cycle on and off and not be a constant load on the battery/alternator.

  • @pigthehotroddog7442
    @pigthehotroddog7442 ปีที่แล้ว +2

    Another great video! Thank you Cam.

  • @evanscc70
    @evanscc70 4 หลายเดือนก่อน

    Thanks a lot Cam. Recently installed the fans you did and the have run the unit hard for two days. I didn't notice but today late in the day it wouldn't turn over and noticed that the battery was reading 9V. Fortunately these have a pull start redundancy so I am not worried to much and it is still on the job site. Once it is back I believe I will run the same alternator solder check you did and of course verify the rectifier.

  • @smca7271
    @smca7271 7 หลายเดือนก่อน +2

    Its a good question,I added a fan and cooler,then found my alternator was only 1,.5amps, oops,had to add solar panel..never thought of changing the stator,thanks for the info

  • @charleswallace2937
    @charleswallace2937 6 หลายเดือนก่อน +2

    Would the rata engine be about the same?

  • @headpainter1
    @headpainter1 ปีที่แล้ว +1

    So you didn't either know that you're charging circuit was dead because you haven't had a dead battery or, the charging system was working sporadically sending intermittent voltage to the regulator in surges and was keeping the battery charged enough. If that's the case I'm surprised it didn't fry the rectifier from the surges. Great video. For a second I thought I was going to be shocked with a hidden China charging system. I knew the Briggs engine probably had one on it, but I didn't know if China added their own. Cool.

    • @thegarageconnection
      @thegarageconnection  ปีที่แล้ว +2

      I didn’t get any charge when I was testing the amperage draw of the fans

    • @headpainter1
      @headpainter1 ปีที่แล้ว +1

      @@thegarageconnection no I mean in the days or weeks prior. If it wasn't working all together you would have had a dead battery at some point I would think. Makes me think that it was sporadically charging well that faulty solder joint.
      Funny if it just quit that day.

  • @georgecraft007
    @georgecraft007 5 หลายเดือนก่อน +2

    The 7 inch cooling fans from Amazon are marked 12V 80W (but this is not true)
    They are 40W fans that draw only 3.34 amps as measured with my ammeter.
    The 10A alternator, has enough power for the fan, the LED flood light
    and charging the battery simultaneously.

  • @stevejones5303
    @stevejones5303 5 หลายเดือนก่อน

    Awesome job Kevin ! Thanks for sharing

  • @TheFatPeguinBand
    @TheFatPeguinBand 2 หลายเดือนก่อน

    Is there any upgrade you can bolt in to give more juice? Wanted to add on a couple more accessories but don’t want to over do it and or drain the battery running multiple lights, 2 cooling fans, oil cooler fan, pilot fan, back up siren, phone charger etc… lol any thoughts?

  • @Badd55
    @Badd55 ปีที่แล้ว

    Great video! Thanks for sharing.

  • @thegxpguy
    @thegxpguy 8 หลายเดือนก่อน

    do you recall a part number for this alternator?

  • @dfk8881
    @dfk8881 ปีที่แล้ว

    Good video. And that B&S graphic from their website is very useful. Someone linked it on a TractorByNet
    thread about Chinese mini-excavators..
    Now you know why I was concerned about your 2 80-Watt fans. Are you going to take a charge
    measurement now that you fixed the stator? If you have a DC clamp-on meter, it is really easy.

  • @hackish1
    @hackish1 ปีที่แล้ว +1

    Always a good day when you can fix a broken part for $0. For those people who went wild and installed hundreds of watts of cooling fans, I wonder if they could install one of the higher current coils, or if they are physically larger? I've already done some logging of temperatures inside the house and determined that 40-60w of fan is enough to keep the temperature within 1 degree of ambient if that helps anyone else.

    • @thegarageconnection
      @thegarageconnection  ปีที่แล้ว +2

      I’m looking at getting a 20amp alternator and seeing if it fits in the flywheel

    • @richardbrookins5406
      @richardbrookins5406 8 หลายเดือนก่อน

      @@thegarageconnection So how did this pan out?

  • @zoart9335
    @zoart9335 11 หลายเดือนก่อน

    Thank you for your videos

  • @ronnieduff4124
    @ronnieduff4124 ปีที่แล้ว

    Again, thanks for the videos. I have a dumb question for you😊. I have an oil cooler coming, but I’m really tight for space. If I remove the flywheel nut, and remove the starter cup permanently, do you see any issues with it? Thanks

    • @thegarageconnection
      @thegarageconnection  ปีที่แล้ว +1

      Not having the pull start may come to bite you in the long run, but I don’t see an issue with safety or anything like that

  • @torkelsenhus
    @torkelsenhus ปีที่แล้ว

    Hey, I have a 1-ton mini called Nuoman e10. When the engine gets warm the voltmeter shows 18v and above. Any idea what could be causing this?

    • @thegarageconnection
      @thegarageconnection  ปีที่แล้ว +1

      Seems like your voltage regulator is malfunctioning

    • @torkelsenhus
      @torkelsenhus ปีที่แล้ว

      Ok, thanks. I'll check up on it@@thegarageconnection

  • @Skiponline
    @Skiponline ปีที่แล้ว

    Great video's! I would apreciate your thoughts on this problem: I have the same machine except for the engine (Koop KD192f). I recently couldn't get it to start while motor was warm, the starter seems to turn too slow. What we checked so far:
    1-the battery is ok (12,70 volts).
    2-Diesel is inside the tank and motor(we see some fumes coming out the exaust while trying to start)
    3-We tried to start with starter fluid, no luck
    4-There is no air in the fuel pipes (loosend the nut, fuel was seeping out)
    5-Air filter and oil is clean
    The machine has only 9 hours (!)
    Tomorrow I will remove the whole back and side pannels to have a better look at everything.
    Do you have an idea what the cause could be please?
    Keep up the video's and thanx!

    • @thegarageconnection
      @thegarageconnection  ปีที่แล้ว

      Diesels should have a compression release while starting.

    • @2012DIY
      @2012DIY ปีที่แล้ว

      Hi there,
      I had the same issue, and you can fix it by try another battery (at least 70 amps (used for a diesle car). It should be work for you. Good luck

    • @Skiponline
      @Skiponline ปีที่แล้ว

      @@2012DIY Thanx for your help, I apreciate it. Will try it

    • @Skiponline
      @Skiponline ปีที่แล้ว

      @@2012DIY the information on the battery is :
      'Cold cranking amps.(sae) 400
      Cold cranking amps. (en) 360
      Amp hours (@20hr rate) 45'
      Could you help me with decifering this? Cheers

    • @2012DIY
      @2012DIY ปีที่แล้ว +1

      @Skiponline sorry for the late as I have not seen it, but anyway, the mine is:
      Cold cranking amps is : 550
      Cranking amps is : 660
      Amp hours @20 hr rate is : 70
      And this battery make my excavator work.
      Good luck

  • @billharris2556
    @billharris2556 ปีที่แล้ว

    Cam, do you have the model and link for the manual of the Briggs 13.5 engine? I am pretty sure it's the XR series, but wasn't sure.

    • @thegarageconnection
      @thegarageconnection  ปีที่แล้ว

      You are correct it is an XR2100 that’s what they call it.

    • @skeller0160
      @skeller0160 6 หลายเดือนก่อน

      ​​​@@thegarageconnectionWhat about the RATO engine model? Mine shows 15 horse power and 420cc for the AGT QH12R 2024 model.

    • @SCDeerAddict
      @SCDeerAddict 2 หลายเดือนก่อน

      ​@skeller0160 it's not 15hp but there is a manual , just Google Rato 420D

  • @jtsokiehobbyandadventures6666
    @jtsokiehobbyandadventures6666 ปีที่แล้ว +1

    The motor at full speed should be 3600

    • @scottwilbanks9888
      @scottwilbanks9888 ปีที่แล้ว

      Mine was only 2300 I just upped it to 2600.

    • @SCDeerAddict
      @SCDeerAddict 2 หลายเดือนก่อน

      ​@@scottwilbanks9888how do I check mine?