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  1. #1
    Join Date
    Apr 2011
    Posts
    17

    Default BOBCAT 225 speed soleniod testing?

    Hi, New to the discusions...Have a Bobcat225 that won't idel down in RUN IDLE setting. How would I test the soleniod on it? I have a volt meter available. Thanks

  2. #2
    Join Date
    Aug 2008
    Location
    Orange, TX
    Posts
    1,167

    Default

    If your meter has an Ohm setting, use it to check the solenoid coil for being open (bad) or for continuity (good). If no ohm meter, use a 12V battery and test leads to check to see if the solenoid will energize (pull in).
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  3. #3
    Join Date
    May 2008
    Location
    Mpls, MN
    Posts
    464

    Default

    If it will not idle down unplug one of the wires. If it idles down move on to the control board (i assume). If it does not idle down you have some thing stuck in the solenoid.
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  4. #4
    Join Date
    Apr 2011
    Posts
    17

    Default

    Thanks guys, will try that. Geo.

  5. #5
    Join Date
    Aug 2008
    Location
    Orange, TX
    Posts
    1,167

    Default

    On the Bobcat 225, the solenoid energizes to bring the unit to low idle speed and de-energizes to increase to weld/power speed.

    If the solenoid coil proves good with the continuity check and it pulls in on the battery test, make sure there is 0 volts AC between idler control module terminals G and E with the unit running and no weld/power load on the unit.

    Confirm there is battery voltage between idler module terminals B and E with STOP/RUN/START switch in RUN/IDLE position.

    If the above checks out and there is no battery (+) voltage at idler module terminal C after 15-20 seconds with switch in RUN/IDLE position after a weld/power load is removed or after unit is first started, the idler module is bad.
    MM200 w/spot controller and Spoolmatic 1
    Syncrowave 180 SD
    Bobcat 225G Plus LPG/NG w/14-pin*
    *Homemade Suitcase Wire Feeder
    *HF-251D-1
    *WC-1S & Spoolmatic 1
    PakMaster 100XL
    Marquette "Star Jet" 21-110

  6. #6
    Join Date
    May 2009
    Location
    Muskogee Oklahoma
    Posts
    245

    Default

    Also check to make sure that the plunger rod isn't bottomed out inside the solenoid. Sometimes the vibration on the engine will cause the bolts holding the solenoid to come loose and first time it tries to kick down, the solenoid will pull toward the plunger instead of the opposite.

  7. #7
    Join Date
    Apr 2011
    Posts
    17

    Smile

    Thanks gents! By the way the soleniod checks out good. Reads 2.51 ohms. both ways. Where is the idler modual located? Is it the same as the idle run switch? And if possible where are the circut boards located? Thanks Newby here...

  8. #8
    Join Date
    May 2009
    Location
    Muskogee Oklahoma
    Posts
    245

    Default

    Idle control module is under the cowling on the back of the control panel. It's a red box with spade terminals on it.

  9. #9
    Join Date
    Aug 2008
    Location
    Orange, TX
    Posts
    1,167

    Default

    Depending on the unit's year of manufacture, the idle control module may be here. . .
    Bobcat 225G Plus 004a.jpg

    . . . or here.
    IMG_3760a.jpg
    MM200 w/spot controller and Spoolmatic 1
    Syncrowave 180 SD
    Bobcat 225G Plus LPG/NG w/14-pin*
    *Homemade Suitcase Wire Feeder
    *HF-251D-1
    *WC-1S & Spoolmatic 1
    PakMaster 100XL
    Marquette "Star Jet" 21-110

  10. #10
    Join Date
    Apr 2011
    Posts
    17

    Default

    Yup, It turned out to be a bad soleniod. Purrs like a Kitten now! Thankyou Geo.

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