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electrical diagnostics

  1. G

    Deere 750J Cooling Fan/ TCU

    I've got a Deere 750J that the fan runs wide open by default. The guys who had it before me somehow got the wires caught in the fan and tore them up. I spliced all the wires back to how they should be and checked for bare wires to prevent a short circuit. There was no voltage going to the...
    • Grant Eckard
    • Thread
    • cooling fan deere dozer electrical diagnostics tcu
    • Replies: 7
    • Forum: Dozers
  2. C

    Cat 303.5E CR Start motor and electric problems

    Hi everyone ! A few days ago wir tried to startup our Cat 303.5E but it won´t crank. We just got a clicking sound from the start motor. After we replaced it with a new we had still the same problem. We checked all fuses,relais and ground connection. Everthing seems fine. We even replaced the...
    • Cat303
    • Thread
    • 303.5e cr caterpillar electrical diagnostics start problems
    • Replies: 5
    • Forum: Compact Excavators
  3. F

    Starter motor smoked up and doesn't crank anymore

    Hi all, sorry for the long post! What happened: so I recently had quite a bit of smoke going on in my old Sumitomo S160. At first it started fast and normal even though it was out in the rain for 3 weeks since the way to my machine was flooded. Then ca. 4-5 minutes after starting while I was...
    • float
    • Thread
    • electrical diagnostics fire solenoid starter problem
    • Replies: 0
    • Forum: Excavators
  4. T

    CAT 262D skid steer AC

    Hey, I have a CAT 262D skid steer and the ac compressor is not kicking on. I checked power to the compressor and wasnt getting anything so i checked the relay and still wasnt getting anything. I checked continuity between the relay and the other end of the harness and had continuity. After...
  5. M

    09 279c electrical issues.

    I was mowing with my skid steer today. It ran great and everything went as planned. After I was done and it sat for a number of hours I needed to move the machine. It started just fine but when I turned on the light switch it died. Now when I turn the key I have no power to anything. The dash...
  6. A

    Cat ET and Windows version

    What version of windows should i be running with cat et version 2021A
  7. J

    John Deere 244j air condition not working

    I have a John Deere 244j and the air conditioning isn’t engaging. Compressor clutch isn’t turning on. Tested all the fuses to find them all good. Tested the relay to find that there are 5 pins on this relay. The top two larger pins, switched side, doesn’t ever have power, the other larger pin...
    • JeremyH
    • Thread
    • air conditioning electrical diagnostics electrical problems john deere john deere 244j loader wiring diagram
    • Replies: 5
    • Forum: Tractor/Loader/Backhoes
  8. K

    Electrical issue

    Hello, My LB75b will still try to turn over even when my battery is completely disconnected. There is not quite enough juice and it just clicks the solenoid. How is that? Is there some capacitor somewhere? I discovered this while disconnecting everything in an attempt to diagnosis my rapid...
  9. kancutter

    Auxiliary Hydraulic problems Cat 287b

    Hi All I am new here and would like to ask your advice on a problem with my 287b s#zsa02159 About a week ago I found when I entered the machine that the battery was drained to a point I had to jumpstart. After a couple days of looking I raised the cab to find the magnetic solenoid that operates...
  10. S

    1985 Champion 720A Motor Grader

    Problem: 1985 Champion 720A motor grader when I turn on the isolation switch, the control/gear box lights up on the display and it won’t start. Before I started working on it, the grader kept stalling when in operation giving me error codes 2.7 (No power to solenoid circuits) and 4.2 (Neutral...
    • Steve365
    • Thread
    • champion champion 720a electical electric problems electrical diagnostics electrical system motor grader
    • Replies: 0
    • Forum: Motor Graders
  11. J

    Clark Electric: Where is this voltage coming from?

    We have a Clark electric forklift which has blown two fuses. The battery has been removed from the frame to diagnose where the short is but I am getting an unexpected voltage reading of 0.6 to 0.4v between the frame and the ground. It makes resistance testing described in the maintenance/repair...
  12. J

    GPS TRACKING SETUP HELP

    This may be common knowledge but I'm looking at installing bought GPS units into my CAT machines. Does anyone know how to install GPS units into CAT machines or know how its done? Broadly speaking? Any information will be helpful.
    • jesse546
    • Thread
    • electrical diagnostics gps gps systems gps tracking
    • Replies: 1
    • Forum: GPS Systems
  13. D

    Daewoo Solar 220LC-III engine wont shut off! what could be the cause?

    Daewoo Solar 220LC-III engine wont shut off with key off! what could be the cause? I believe that my machine has a D1146N engine and is of the 1996 or 1997 year if that helps. Anyone encountered such a problem before on the same machine or something similar? and what was the cause or repair...
  14. S

    ZF4WG-180 transmission problem

    Short time lurker first time posting. We have a Dae Woo Mega 250 with a ZF transmission and about a week ago the guys were using it to load snow and parked it the next day when started up it wouldn't move. I've narrowed it down to an electrical issue the TCM has good power and ground inputs and...
    • ScottM1A
    • Thread
    • electrical diagnostics wheel loader transmisssion zf4wg 180
    • Replies: 5
    • Forum: Wheel Loaders
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