I was mowing my neighbor's pasture with my NH TC30 and brush hog the
other weekend when my hydraulics went away. I figured I had a leak
somewhere and took the tractor home and parked it and checked the
hydraulic fluid, and yep, it was off the bottom of the dipstick. I
didn't see an obvious leak, and had stuff to do the last few weekends so
today I finally got to it. I added a couple of gallons of Quicklift
(which was way too much, but at least I knew I had enough) and cycled
the loader and 3 point a couple of times. The hydraulic pump was very
noisy and the loader and 3 point went up very slowly and jerky. Great,
I've probably wiped out the hydraulic pump.
I went on line and found that a new hydraulic pump retails for $550 from
New Holland, although imagine I could probably find one cheaper with a
little digging. I then surfed through a couple of tractor forums and
found one or two people with the same problem; they said there's a
rubber coupling on the pump suction line (probably for vibration
isolation) that can get knocked off and cause the problem. I climbed
under the tractor and found the coupling/hose and sure enough the
coupling was pushed back and kinked and the hydraulic pump wasn't
getting good suction. I put the coupling back in place and re-tightened
the hose clamps, and everything works fine. Then I drained about a
gallon or so of Quicklift out of the sump and got the level back where
it needed to be.
I remember while mowing one section of the field I was turning around at
the end of a row and got the tractor stuck. Turns out it was high
centered on a log round that the neighbor's idiot son had probably
dragged out into the pasture for who knows what. That's probably what
knocked the coupling loose.
I guess I'll have to finish mowing the pasture this weekend.
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