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Caterpillar 262D New Grapple won't operate

Discussion in 'Compact Wheel Loaders' started by Clinton Parker, Nov 25, 2020.

  1. Clinton Parker

    Clinton Parker Member

    Joined:
    Sep 3, 2020
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    Location:
    Indiana
    I just obtained a used grapple for my Cat 262D. The grapple worked fine when I tested it on another skid steer. However when I got home with it, I connected it to my Cat and it would not open. The unit raises up and down tilts back and forth. But for some reason I cannot get the grapple to open and close. It makes no sound at all. I am wondering if I am doing something wrong. This is the first Cat I have owned. I used Bobcats with grapples and have no problems. But this is puzzling me. I turn on the aux hydraulics but the control button does nothing. Please help. Serial # TDTB01086
     
  2. heymccall

    heymccall Senior Member

    Joined:
    Feb 20, 2007
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    2,611
    Location:
    White Oak, Pa
    Disconnect grapple.
    Start machine.
    Depress park brake button to release park brake.
    Rock thumbwheel forward on right joystick. You should hear a change in the hydraulics.
    Rock thumbwheel backwards and you should here the same change in hydraulics.
    You should not have to press any other sequence to operate the auxiliary hydraulics. Since no attachment is connected, the oil will bypass back to tank. If you hear no difference when rocking the thumbwheel, there is a problem in the machine.
     
    512high likes this.
  3. Clinton Parker

    Clinton Parker Member

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    I will try that on Friday. How long should I hold the thumbwheel? Thanks for the reply.
     
  4. heymccall

    heymccall Senior Member

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    The moment it is rocked fully, either way, the hydraulics will go to relief, resulting in a change of sound in both the hydraulics and the engine.
    There is no need to hold it on for more than 3 seconds.
     
  5. Clinton Parker

    Clinton Parker Member

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    Thanks for the information.
     
  6. Clinton Parker

    Clinton Parker Member

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    Went to shop today. Start the machine and released the brake. No change either way when moving the thumb wheel. I believe I need a new joystick. Everything else works fine.
     
  7. Mark13

    Mark13 Well-Known Member

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    Feb 28, 2013
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    IL
    I'd check fuses or anything else before springing for a joystick. It wouldn't surprise me if the Cat house wanted $1250+ for the joystick. You can probably take it apart and switch out the thumb wheel if you were really determined to do so. A buddy does it with the aux switches in the joystick on his Komatsu loaders since they get used hundreds of times a day (high tip buckets) and a new joystick is something like $1400 and the switch is about $7.
     
  8. Clinton Parker

    Clinton Parker Member

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    Location:
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    I did check the fuses all were fine. I know its the thumb wheel. I plan to tear it apart. A new cover with the thumb wheel from Cat is $487. It is not the entire joystick, just the cover with the thumb wheel. So if I could find a used joy stick for a fair price I will go that route. I can fix most of these items so Cat won't see me unless it is down to the last straw. Thanks for the information. Will let you know how it comes out.
     
    Mark13 likes this.
  9. Clinton Parker

    Clinton Parker Member

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    Took the joystick off the controller and put the multimeter to it. I got continuity in the trigger button, but the thumbwheel nothing, so as I suspected it is the thumbwheel. So the search begins.
     
    Mark13 and Tarhe Driver like this.
  10. Mark250

    Mark250 Senior Member

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    Occupation:
    heavy equipment technician
    Location:
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    the thumb wheel switch is not resistive it is a PWM sensor. generally you need to check duty cycle at the signal wire
     
  11. Clinton Parker

    Clinton Parker Member

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    Yes, I checked all the wires. I opened the thumbwheel and the springs inside were completely rusted from top to bottom. So I am sure that the corrosion goes into the wiring circuit causing an open circuit.
     
  12. Clinton Parker

    Clinton Parker Member

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    I received a new joystick today. I installed the unit and fire the machine up. The auxiliary switches work with fluid going through. So the it was the joystick after all. Thanks for the information.
     
    512high and Tarhe Driver like this.