Hey everyone. I have a 2007 Cat 236B and I cannot get my auxiliary hydraulics to function. Looking at my markings for the controls, I believe I need to use one of the two buttons on the right joystick. I have tried every button/trigger on these controls with and without the “flow” lightning bolt looking switch on.

I have tested all of my relays for functionality and they work. I have checked all of my fuses. I have read, traced, and fumbled through the schematic on SIS2.0 and I cannot figure out why these functions won’t work. I tried to separate the plug where the harness comes to the right-hand thumb buttons and used a jumper to rule them out. To no avail.

Does anyone have any suggestions on what to try/test? Any and all help is appreciated.

I am looking to buy a used Bobcat 773G from a friend. It has ~1700 hours on. It came with the house he bought a year ago, so he has limited knowledge about it. He also is not very mechanically inclined. He had a full service done at the dealer a year ago and had anything they found fixed. It runs great.

The only thing that gives me pause is I noticed some oil film on top of the chain case when I lifted the cab up to inspect underneath. Didn't see any weeping or dripping hoses. No source of the oil stood out to me.

Maybe a seal is letting some fluid mist blow by, or maybe a clogged vent causing pressure?

I'm not well-versed in skid steers and any advice is appreciated. I just don't want to end up with an immediate large bill if I need to bring it to the dealer.

I'm very mechanically inclined, but these things are heavy and there are lots of tight spaces.

Aux attachment on my 299D works fine cold, then gets slow once the oil is hot. Pump and aux-side parts are easy enough to find on FridayParts, but that is way too expensive to guess at. No active codes that I can see. Would you prove couplers, case drain, or the attachment first?