Air in hydraulic reservoir : John Deere Review  -- John Deere Tractors Discussion Forum and Review Air in hydraulic reservoir : John Deere Review -- John Deere Tractors Discussion Forum

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 05-12-2015, 19:41 Post: 192764
Woodytnr



Join Date: May 2015
Location: United States
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Posts: 2
 Air in hydraulic reservoir

My 4100 is about 10 yrs old with about 500 hours on it. Light duty. my loader is not responsive on start up but works better as it warms up. At its best it is not close to what is used to be. I have changed filters, cleaned the intake screen, etc. I was using it yesterday and decided to add some hyd fluid (JD spec) and found air was blowing out of the fill opening for the hyd fluid. I added fluid and put the cap back on but the tractor would not move, the bucket would not move and steering was hard. I checked the fill cap and it was not tight and air was blowing out around the cap. I tightened the cap and all started working again but slow as before. Whats going on here? Any suggestions?






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 05-13-2015, 16:38 Post: 192771
kthompson



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Location: South Carolina
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 Air in hydraulic reservoir

Based upon limited experience it sounds like you have air being sucked into your hyd system. Only have had limited experience with this and the tractor it was on the fluid would foam up as run as the air was mixed in it but it had more hyd power upon start up compared to after running for the air I guess floated out of the oil.

Look for a sign of leak on the hyd system.






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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