Hydraulic issue New Holland 1920

LUDDY

New User
I am having an issue with the hydraulics on my New Holland 1920. Had water in the
Hydraulic oil, Drained the system and put new oil in. Loader functions sporadically,
pull lever, nothing then pump kind of wines and bucket will move slightly? If
the tractor was outside for the winter before with water in the system could something
have frozen and cause an air leak in the system? Or is it likely the pump is shot?
Tractor only has 650 hrs and is used mostly around house and some construction sites for
clean up.
 


If you had problems with water (and possibly other contamination) in the hydraulic system you should probably consider draining it out again and cleaning the suction screen. If your hydraulic filter base and piping look like what's in the above diagram then item #43 is probably pretty well covered over. Quite likely hasn't been cleaned in years. That will easily cause the symptoms you described.
 


If you had problems with water (and possibly other contamination) in the hydraulic system you should probably consider draining it out again and cleaning the suction screen. If your hydraulic filter base and piping look like what's in the above diagram then item #43 is probably pretty well covered over. Quite likely hasn't been cleaned in years. That will easily cause the symptoms you described.
Thanks I will give that a try.
 


If you had problems with water (and possibly other contamination) in the hydraulic system you should probably consider draining it out again and cleaning the suction screen. If your hydraulic filter base and piping look like what's in the above diagram then item #43 is probably pretty well covered over. Quite likely hasn't been cleaned in years. That will easily cause the symptoms you described.
Different configuration on my 1920 no suction screen. any other thoughts?
 
I guess my next step would be to remove the return line from the loader valve (assuming it has a loader valve) run the line into a clean bucket, start the engine and examine the oil coming out for air, foam, sputtering, etc. If you find that then revisit all the suction line joints for possible air leaks. Also consider the hydraulic filter might be too restrictive causing low oil flow.
 
I guess my next step would be to remove the return line from the loader valve (assuming it has a loader valve) run the line into a clean bucket, start the engine and examine the oil coming out for air, foam, sputtering, etc. If you find that then revisit all the suction line joints for possible air leaks. Also consider the hydraulic filter might be too restrictive causing low oil flow.
Thank you for the reply!
 
I took the filter off and oil was very milky, Got a replacement filter but I am going to drain the oil once again.
How can I insure I get all the contaminated oil out completely before I refill?
 
You can't. With loader tractors you can drain/fill, drain/fill a dozen times and still not get it all out. One trick I use on occasion is to put the loader valve return line into a bucket so the return flow doesn't go back into the tractor. Fill the hydraulics over full. Start the tractor and cycle the loader functions back and forth, up and down continuously all the while catching all the fluid in the bucket. When the pump starts to sputter, stop and refill the tractor. Then do it all again and repeat that until the fluid coming out starts to look more like what you'd want it to. It takes a lot of oil.
 

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