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  1. Z

    Cat 320D weird issue with machine

    One thing I have seen many times on D series excavators is that inside the pump controller there is two spools threaded together, If they come loose then it can cause this issue because the pump will not destroke. The hydraulic tank will need to be drained or pull a vacuum in it to remove the...
  2. Z

    Caterpillar 980M fault codes

    The autolubes on these are very susceptible to air locks when run low on grease. Almost every E890 I have seen just needs a grease topup then the system to be run in continuous test mode (accessible in the monitor) until the E890 goes away. Try that see how it goes
  3. Z

    CAT 308C Boom, Stick, aux inop

    If you loosen the locknut on the end of the solenoid and wind in the screw it will manually open the valve as if there is power to it I've done this on a Japanese "shovel crane" Cat 320D that had the wrong Implement ECM or something like that but that only had 3 solenoids in the bank (boom up...
  4. Z

    My serial number 25X02672

    Looks like a good number to me? 1984 D5B Regulator (as Cat calls it) is 7N-0208 Gasket for regulator is 7N-0944
  5. Z

    Aux hyd. On 247b won’t stay running

    I have had a customer with a 247B also that could not engage the continuous flow, turns out they just weren't releasing the thumb wheel fast enough, if you hold it for a split second too long after tapping the continuous flow it won''t engage.
  6. Z

    CAT 330D L Hydraulic pump loading up and lifting boom causing no start

    Just a bit of a conclusion to this thread Pulled out all sorts of spools, checks and reliefs on the side of the valve bank with the issue. Found plenty of contamination and wear all over but nothing conclusive I ended up winding off the main relief fully which allowed me to start the machine...
  7. Z

    CAT 330D L Hydraulic pump loading up and lifting boom causing no start

    Good thinking, It's drifting quite slowly, the ram seals look very poor so I was assuming it was in ram. I'll have a listen Yeah it only appears to be Boom 1 spool which is on the affected side of the valve bank Thanks Has anyone ever had a negative flow relief valve get stuck closed? I've...
  8. Z

    CAT 330D L Hydraulic pump loading up and lifting boom causing no start

    Hey guys any thoughts on the following issue. Working on a 330D L Japan Market machine RDA, the equivelant SN is NBD The fault started with the boom lifting on its on at all times while the engine was running, the operator was able to still lower the boom using the controls. This happened in...
  9. Z

    CAT 320GC TIER 3 MACHINES???

    We currently have a 336 GC and a 345 GC parked right next to each other, they actually appear to share undercarriage and track frame so I'd say it's not a true 345D alternative. The 320GCs in my experience are built a little lighter and have less power with less features, they haven't been very...
  10. Z

    CAT315CLC Leaking Oil Pan

    The Cat procedure for this job says it can be done with the engine in. I personally have done the oil pan in a 315D, rather similar, without removing the engine. Do they agree it's oil pan leaking or are they thinking crank seal or something?
  11. Z

    How to park the excavator?

    I often drive past a scrap yard after hours and all 3 of their machines are parked with grapple hanging up in the air, seems dangerous.
  12. Z

    Operator states: track adjuster leaking down, have to pump up all the time

    Not so sure about that. Anyone seen one this bad?
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