1992 diesel. Fourth owner 4K hrs. Go to purchase running fine. Lifts turns backwards towards everything it should. Pay for it 5K. Load it up get it home pull of trailer. Leave it idle for 10 minutes to park trailer lift bucket up half way and she stops all hydraulics. No control at the sticks no controls at the pedals. No up no down no back and forth. Engine sounds fine. Shut it off to see if boom will leak down, nothing. Go to start it total zero. No crank no starter noise no nothing. Turn key to start, Hyd Charge light, alt light, engine oil press light come on and constant buzzer. Engine oil low, hydraulic oil low and milky white. Remove drain plug from reservoir (nice mess) drain everything I can, hydraulic hoses where I can. Remove suction screen completely clogged. Soak in kerosene clean up nicely soak and clean breathers. New filters, 22 gallons new hydraulic fluid, new oil and diesel filters. Fill hydraulic filters before installing. Buy new bigger wrenches. Get operator and service manuals. Get in go to start same thing. Three lights no turn over steady buzzer. Do I need to prime something, is there a sensor stuck giving a false reading. Why can't I find anything about that buzzer. Does the seat switch have some control over the starting ability. I'm leaning towards electrical, but why did I loose all hydraulics. Got plenty of milky white fluid at screen filter in standpipe when I removed cap. Not sure how much fluid I got out, definatly 10-15 gallons. It doesn't look abused shows some neglect. Low fluids.
New holland l785 no go no star no fun
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