180- Loss of all hydraulics in cold weather

Jmoeller1998

New User
I have a 180 that while moving snow a couple years ago I lost all hydraulics for my loader as well as steering and the PD. It was low on fluid so I filled it up and still nothing. I ended up rebuilding the pump and changing the filter and everything started working great except the pump would cavitate occasionally. Everything works great in warm weather. Now it is 35 degrees and I started it up to move snow and once again I have no hydraulics and wont move. Fluid is full this time but has turned cloudy like it has water in it. I thought maybe the pump lost prime because I have a small leak on a fitting and it has been sitting for a couple months so I tried repriming the pump but no luck. Could water be causing all these issues? Is there a strainer or screen on the suction piping to the pump that could be gummed up?
 
If memory serves me correctly, there's a cast housing which bolts cross ways under the belly of the tractor, which has a pipe coming out of each end. I believe there's a screen in/on that housing.

You need to get that milky oil out of there and get some good hyd/trans fluid in there.
 
Yes, water in the oil will freeze at the bottom suction and cause loss of flow to the pump.. especially since you say it is milky........ and what weight of oil are you using ... ?
 
Thanks I was able to find a parts view in my manual that shows where the screen is. I got the fluid drained and I will tear it apart this weekend to clean it all out.
 

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