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  1. J

    Mulching Heads for Skid Steer

    The ideal style head really depends on the specific material being cut. Heavy wood use for example would be high load on the cutting tools and would benefit from the control of depth of bite. If you were in light brush applications you wouldn't particularly need the bite limit since the load on...
  2. J

    Pump rebuild kit

    I don't know about rebuild kits for you pump most glass bowl stuff is few and far between now, but see if you have a maxiforce dealer they offer a lot of replacement fuel pumps, engine rebuild parts etc for the early deere equipment. I know they offer an updated fuel pump.
  3. J

    Mulching Heads for Skid Steer

    Being able to control the depth of cut in most wood processing applications keeps your rotor working at greater efficiency an at a more stable torque load. If you consider the raker on a chainsaw tooth it is very easy to file down the raker to achieve a more aggressive cut until the chainsaw...
  4. J

    1997 western star won't build air past 40 psi, at times.

    Next time you don't build pressure reach under the bottom of the drier and see if the purge valve is bypassing air. The purge valve orings fail and will prevent complete sealing. We see it all the time when it starts to get colder out.
  5. J

    3412e injector driver failure

    Got it thanks will let you know
  6. J

    3412e injector driver failure

    I see you sent the timing retrieval instructions. The tech seemed uncertain as how properly install the original software from my serial number hence his corrupted file comment. He felt comfortable just exchanging the software out of the old ecm. My concern now that you brought it up is If all...
  7. J

    3412e injector driver failure

    Thank you for all your effort I feel very fortunate to have found such a knowledgeable group of people like yourself willing to share their expertise to help each other move forward.. I hope now that I have become a member I can learn how to contribute effectively.
  8. J

    3412e injector driver failure

    How should I advise the Cat tech. His plan was to simply reinstall what was on the failed ECM the 950 HP software instead of what should have been there the 990 version. He claimed the 990 file on sis was corrupted somehow. Could he have used a disimilar configuration when he went to install the...
  9. J

    3412e injector driver failure

    The tech at the dealership mentioned I may have a yellow light on when I go to use the machine in which case they may have to do a timing calibration on the machine. Does that sound correct? If that's the case will the machine be running sweated until recalibrated?
  10. J

    3412e injector driver failure

    My mistake number was 2219314. Cat dealership had several issues with proper et connection and format to retrieve stored software and configuration information. Than the original software file didn't download correctly. Now they are getting another ECM and starting over.
  11. J

    3412e injector driver failure

    Nige I am on the road I tried to respond prior but I think it failed to send. I purchased a new ECM and as you found the OEM software number for the 990 go version is what cat had listed for that part #. The failed ECM had program 2214319 installed is this different specs from what it is...
  12. J

    3412e injector driver failure

    I will say the timing and fuel curve program differences are amazing though. The difference in the motors tone and response on the 990 hp engine vs the 750 hp is immediately noticeable. The 990 has always been crisp and rapid to accelerate compared to the 750 and 860 hp versions on my other...
  13. J

    3412e injector driver failure

    The failed ecm is the reman and it does not have the 4 bolt cover. The 750 hp ecm may have the cover it is the original ecm from new I think. I will check for certain in the morning. I think I know where you were going though possibly just swapping the software eprom? The failed reman unit...
  14. J

    3412e injector driver failure

    Any other insight would be appreciated. If there are any sources of CAT ET's available for sale or a suitable option for these industrial engines I am interested in purchasing one. I have been borrowing one randomly and I hate doing that but we have several of these units now and I think it is...
  15. J

    3412e injector driver failure

    The ECM is off a similar application but at a significantly lower horsepower setting. The engine serial number for the donor ecm is 4cr01105. AR128-2326. The original unit is a 990 hp platform and the donor is a 750 horsepower platform. I wasn't planning to try and utilize the donor for anything...
  16. J

    3412e injector driver failure

    I apologize for typos above
  17. J

    3412e injector driver failure

    Thanks for you input here's some more info ESN 4cr01048 Arrangement #131-4016 I checked for harness issues continuity in the wrong places etc. found nothing . Problem according to staff that has been operating machine stated all was fine until start up at beginning of the day . No obvious...
  18. J

    3412e injector driver failure

    Thanks for the response I will provide an engine serial number tomorrow. The problem is either in the harness or the ecm I think. The voltage is 105 on all wires when disconnected directly from the injectors. the two affected injectors share the same actuator harness . Middle two cylinders right...
  19. J

    Looking name on a part

    I agree with Gregs . The fill should have an oring or rubber washer where the plain washer appears to be. I had several hough loaders over the years and Komatsu dealer was the hough parts supplier for any remaining oem stuff. In your case a good a hydraulic supply should have some sort of...
  20. J

    3412e injector driver failure

    I have a 3412e in a wood grinder that has a puzzling issue. It has one pair of cylinders laboring and misfiring when plugged in . The motor will labor and smoke until the pair are disconnected and then the remaining 10 cylinders operate and accelerate normally. I appear to have 105volts to all...
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