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auxillary hydraulics

  1. S

    Using aux hydraulic port to feed EH valve bank for multi function attachments

    Good morning, I have a 2005 cat 420D with aux hydraulics on the hoe end. I currently have the electric foot switch to turn the flow on or off for a hoe-pack or breaker, and 2 lines on the boom. I would like to install a grapple with rotation on it, it has a small electric over hydraulic...
  2. Clinton Parker

    Caterpillar 262D New Grapple won't operate

    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...
  3. J

    (2015) CAT (257)d Aux Hydraulic Electrical Pin Out

    Hi all, I'm trying to find the pin out for the d series and I can't find a conclusive list. I have the following from various sources. I'm specifically trying to confirm which one is the high flow trigger that gets jumped to B to trigger high flow without an electrical connection for a brush...
  4. T

    Case1845C auxiliary hydraulic

    I have a case 1845c. All my bucket functions are good and strong. But when I use the auxiliary (foot pedal) for attachments, (backhoe, trencher, tree shear) things are a weak. Is there a bypass valve just for the auxiliary located on the auxiliary body? Or main control valve body? Any advice...
  5. J

    Cat 257b aux hydraulics barely 2

    So I am new on here so I am sure someone has come across this. My aux hydraulics are standard flow at just under 16. However when running an attachment it barely flows. I know that it isn't an attachment issue due to I have another machine with the exact same flow and they work great. Trying to...
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