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  1. coalrulz

    Need help with Komatsu Bucket and implement information

    US=Ultra Short - designation given to reduced tail swing machines LC= Long Undercarriage - most Komatsu excavators available in North America are of the longer undercarriage variety. Usually one extra track roller vs the non-LC.
  2. coalrulz

    Need help with Komatsu Bucket and implement information

    Attached has dimensions for a PC308USLC-3E0. Serial number would help determine if it a -3 or -3E0.
  3. coalrulz

    Komatsu Pc200-8 weak arm/stick out

    Which specific functions when operated cause the stick to jerk?
  4. coalrulz

    Komatsu Pc200-8 weak arm/stick out

    Not sure that I have seen a 200LC-8 with a boom quick return valve. Are you sure issue is not in arm quick return valve?
  5. coalrulz

    D37ex-21a Komatsu electrical problems.

    Change pin 21 from my last post to 22. Wasn't very good at coloring within the lines as a kid.
  6. coalrulz

    D37ex-21a Komatsu electrical problems.

    On CN-ST3 40 pin connector at HST controller do you have 24v at pins 1, 2, 11, 12, and 21? With key on should also have 24v at pins 24 and 14?
  7. coalrulz

    D37ex-21a Komatsu electrical problems.

    Do you have 24v on 20 pin connector on back of monitor? Pins 1,2 and 5,6.
  8. coalrulz

    Komatsu D57S-1 Head gasket seep

    I was taught, if you can catch the ridge with your fingernail three choices: - Drive the seal in a little more or little less to give seal new area to ride on. If possible - Sleeve the crank surface where seal rides - Weld and regrind affected area
  9. coalrulz

    Komatsu WA30-3 loader very slow at moving

    Pepe, Have you tried giving the Technical Service of Komatsu New Zealand a call? Bet they have access to a Shop Manual. Below is from the Komatsu New Zealand website. Do you have a technical issue with your Komatsu equipment? Our 24/7 technical support hotline is a one-stop shop for all...
  10. coalrulz

    Komatsu WA30-3 loader very slow at moving

    I am not sure I have ever seen a little WA30 let alone a -3, looks like a cute little loader. I was only able to locate a parts manual for the WA30-3, it show that machine has a torque converter with 2 speed packs and forward and reverse packs. From what I can see Komatsu went hydrostat on the...
  11. coalrulz

    Pc75uu2 final drive issue

    Image below is from the PC75UU-3 manual, roughly showing the hose routing to what appears to be the left track travel motor. Case drain is shown as #2, hose #3 would be the two speed travel hose, which I am assuming you do not have. Are the motor ports identified with letters and numbers that...
  12. coalrulz

    Pc75uu2 final drive issue

    I am wondering if the final drive motor that you recently purchased is a two-speed motor. From everything I can find the PC75UU-2 was equipped with single speed hydraulic travel motors. If the motor you purchased is two speed, for PC75UU-3, and you hooked up the case drain hose to the motor port...
  13. coalrulz

    Pc75uu2 final drive issue

    Did the new final Drive have 1 additional hydraulic port compared to the original?
  14. coalrulz

    wheeled loader shift issue

    Any active faults on monitor, E01,E02 or E03? When below dial is turned to 3rd or 4th the monitor panel still shows 2 for 2nd gear? Seen instances where mud or debris builds up under brake pedals and will not the pedal(s) return all the way. When viewing machine from the rear when someone...
  15. coalrulz

    wheeled loader shift issue

    If the speed sensor in the transfer drive fails it can cause the machine to not go above second speed. Does the speedometer on the dash indicate speed when moving?
  16. coalrulz

    Torque spec on Komatsu PC130 travel motor bolts

    Your welcome. As you suspected not much difference.
  17. coalrulz

    Torque spec on Komatsu PC130 travel motor bolts

    What dash is your PC130? The attached is for a PC130-11.
  18. coalrulz

    Komatsu D41a-3 Brake pedals

    Description from D41A-3 Operation & Maintenance Manual
  19. coalrulz

    D37E-5

    According to parts manual left indicator is #9 Alternator/Charge light.
  20. coalrulz

    Pc 400-7

    Sent you a pm with details
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