JD 300B Hydraulics

/ JD 300B Hydraulics #1  

malexism

New member
Joined
Dec 29, 2012
Messages
3
Location
Winston Salem
Tractor
JD 300B
Have a jd 300b backhoe,and my problem is,hydraulics come and goes, sometimes when using the front loader, I loose all hydraulic power until I shift to neutral an pull clutch out. Please help, this is upsetting.Hydraulic oil gets milky white.
 
/ JD 300B Hydraulics #2  
You need to determine if the "milky white" Hydraulic oil is from air mixing in or water contamination . Draw a sample and let it set. If it's air it will settle as the air disapates. Water may settle to the bottom or may not if the oil will keep it suspended. Heat something metal (old spoon will work) and drop a sample on it. Nothing or smoke = no water. Sizzles = water.

Once this is determined you can proceed.
 
/ JD 300B Hydraulics
  • Thread Starter
#3  
Thanks for the input Zebrafive, I will try that and let you know of the results.Thanks again
 
/ JD 300B Hydraulics
  • Thread Starter
#4  
I'm new in Winston Salem NC, and I'm looking for a place to get parts, like control valves rebuilt kits for a 300b jd backhoe, among other parts.
Somebody please!!!
 
/ JD 300B Hydraulics #6  
I have a JD 301a which is very similar, have you checked the screen and filter? Also while the tractor is running open the fill cap and look in the tank with a flashlight. If there is a mist a line or seal gave out. It could also be 1 of the pumps has gone out if it is air. Hopefully it is something cheap and simple though.
 

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