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Recent content by aws32

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    2004 CAT 268B aux hydraulic (thumb wheel) issues

    Yes I swapped the harness for the secondary aux circuit (I think c1/c2, the official cat docs call everything c+/c-) to the primary and using the push buttons on the right joystick the solenoids open and fluid flows. I’ve contacted the seller hopefully they can send me a new ECM. Is there any...
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    2004 CAT 268B aux hydraulic (thumb wheel) issues

    Sourced it from an Amazon seller that we have successfully used in the past for equipment ECMs. Maybe they flashed the incorrect file… maybe the voltage regulator is shot… are the signal voltages too high? Shouldn’t I be seeing some type of response from the machine? Looks like the wiring and...
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    2004 CAT 268B aux hydraulic (thumb wheel) issues

    Hi Nige - I replaced the ECM and now am getting the following readings. 1. 10.64v 2. Same 3. 5v 4. 2.42v 5. 8v I still cannot get the auxiliary hydraulics to work. Relays seem good, however the diodes in the fuse box do not give me a reading in either direction on my meter? Maybe I’m not...
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    2004 CAT 268B aux hydraulic (thumb wheel) issues

    Thanks again Nige, I was on vacation last week and finally got back to diagnosing - I did not get ~8v after unpinning. I've ordered a replacement reman ECM and they are programming it to my serial #, hopefully it works as CAT dealer want's about 5k for a reman! Should be here in about a week...
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    2004 CAT 268B aux hydraulic (thumb wheel) issues

    Thanks! I will overnight a depinning tool and let you know my findings. Can you de-pin without a tool? On another note - is it possible to disable the aux hydraulics via programming the ECMs with ET? Wondering if maybe it was reflashed when the aux circuit was damaged to prevent accidental...
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    2004 CAT 268B aux hydraulic (thumb wheel) issues

    1. 174mV 2. Same as 1 3. 7.54v 4. Same as 3 5. Same as 3
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    2004 CAT 268B aux hydraulic (thumb wheel) issues

    My apologies, here is the serial *CAT0268BJLBA00354* Will reply to your troubleshooting steps later today. Thanks again.
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    2004 CAT 268B aux hydraulic (thumb wheel) issues

    Hi guys I’m a new owner of an 1000hr cat 268B. It’s an older machine but it runs great. Has XPS aux hydraulics. Here is my issue the secondary hydraulic circuit works fine with the buttons on the right joystick, however the primary (hi flow and standard flow) with the thumb wheel do not...
    • aws32
    • Thread
    • aux hydraulics cat thumb switch thumb wheel switch
    • Replies: 14
    • Forum: Skid Steers
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