I have a 2018 high flow xhp machine. No hydraulic attachments will work. The hoses don’t even pressure up. I had a previous issue when an operator (no longer employed) put a jug of def into the hyd tank. Didn’t crank it, but at the time didn’t know where the tank drain hose was so we cyphoned it out of tank, filled tank, cyphoned again, then cranked it. Called local Cat before cranking and they said we should be fine. Fast forward about 1000hrs…def jellied in tank, and screen, also got into a valve coil screen that controls arm and bucket functions. Fixed all that, removing tank, cleaning, new coil, new oil 3 times. Now the currrent issue is neither my hm415c mulching head or my Cat grapple rake will even try to work. Could it be another coil screen stopped up? I have taken 4 out and cleaned the best we could. Looking for recommendations or another direction to try. Machine is very powerful and responsive in travel and arm and bucket, it’s just the work tools that won’t work. thanks
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