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Recent content by MHDim

  1. MHDim

    The Caterpillar Clicker Box Video

    :) I've gotten so used to working with it on the M, N, R-series (etc) dozers, that nowadays, 99% of the time I don't even bother to unpack / connect the communications adapter and hook up the laptop. Calibrations work like a dream, and somewhere in my phone (which is most of the time in my...
  2. MHDim

    CAT 320C low hydraulic power, engine stalling

    Again, I've been very busy and I also had some (minor!) health problems yesterday... and right now again, I only have a few minutes of time on hand. Sorry for my inconsistent presence / feedback. Here are some thoughts, hope tomorrow I can be back and discuss in more detail: - From what I see...
  3. MHDim

    CAT D4H WON'T MOVE

    Personally, I never heard of any system designed to do that on any Cat dozer. Now in theory, if the transmission oil level gets low enough, at some point I guess the brakes should start dragging and then lock up, from sheer lack of pressure. But since oil for the brakes comes from the main power...
  4. MHDim

    CAT D4H WON'T MOVE

    Try to do what Mark250 said - remove the drive axles and test again. If it performs exactly the same... IMHO, I'm afraid it looks/sounds like a mechanical failure somewhere inside the transmission :(
  5. MHDim

    CAT 320C low hydraulic power, engine stalling

    First, let's clarify in more detail how pump regulation via PS pressure works (according to my knowledge). Sorry if it will get a bit long. Suppose a cylinder is somewhere along its travel (NOT at the ends). Initially, PS pressure is high in order to keep the pumps at low flow (this is also...
  6. MHDim

    CAT D4H WON'T MOVE

    This is what I don't like, especially the underlined part. With the engine running and the transmission in neutral, shouldn't the driveshaft be turning, regardless of any problem further downstream - in the bevel gear, final drives, brakes etc...? From what I know, under those conditions...
  7. MHDim

    cat d6r slow steering

    From my experience, if you try a calibration using ET, it notifies you directly of an active code (as in, you see a pop-up message on-screen) only if the respective error should negatively impact the result of the calibration you're performing. If it's an unrelated service code, it does not show...
  8. MHDim

    Cat 322L Hydraulic oil showing up in coolant

    This might sound silly, but as we say over here, it doesn't cost anything to ask :) - are you / is the owner SURE that there's OIL in the coolant, and not FUEL...? The 3116 engine on the 322 has unit fuel injector pumps, which are pressed in some brass sleeves in the cylinder head. Those sleeves...
  9. MHDim

    Take me to school.......

    I've been extremely busy lately, so I haven't checked in here for a couple of weeks. Sorry about that. Did you get the info elsewhere / visit the machine? I had time to have a VERY brief look in SIS today, and from what I see, things are a bit different on the D6T as compared to the D6R's which...
  10. MHDim

    CAT 320C low hydraulic power, engine stalling

    When you say STICK EXTEND, do you mean extending the stick OUT? Or extending the stick CYLINDER (which RETRACTS the stick IN)...? Normally, the movements of BOOM UP and STICK IN are using the output from both pumps, and can therefore exert maximum hydraulic load on the engine. As far as I know...
  11. MHDim

    Take me to school.......

    I would operate the machine until the problem appears, and then I would measure the pressures at the brake control valve (located under the operator's seat), AND at the transmission main relief valve (pressure tap should be available outside, at the upper rear of the transmission case). LATER...
  12. MHDim

    Cat 315 CL pump noise/vibration

    From my experience, I've seen numerous Cat Reman double pumps on excavators working for thousands of hours after install. IMHO, the chance that your reman pump is faulty, is minimal. The problem should most probably be somewhere else in the system, and more likely on the inlet side of the pump...
  13. MHDim

    cat d6r slow steering

    The way you're saying it, I suppose the play is axial (the gears+bearings move along the direction of the shaft). Is it so? And how large is the play? I don't know of any shims over there; according to the assembly procedure, the correct bearing preload is achieved by pressing the shaft until...
  14. MHDim

    Cat 315 CL pump noise/vibration

    The metal particles you had in your system prior to changing the pump were steel or bronze? Normally, if the previous pump contaminated the circuits after it failed, all the system should have been cleaned / decontaminated as thoroughly as possible (while IMHO it's practically impossible to...
  15. MHDim

    D8N Procedure to Bleed the brakes

    Yes, that is correct, and I was wrong on thinking the right track should turn in case of a problem with the left brake. I was very tired Friday evening when I posted about trying to suspend the machine, and I was under the recent impression from a D6R brake control valve which I just cleaned...
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