Air in hydraulic system

BAP

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Dec 31, 2012
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You should not need to bleed air out of the system after an oil and filter change. If you have no hydraulics then you have something more seriously wrong. Was it a routine service you did? Or were you changing because you were having problems?
 

TheOldHokie

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Apr 6, 2021
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How do you get air out of the system I changed fluid and filters and now I can’t get anything to work it’s a 96 M5400
Its not air in the system. Sounds like your pump isnt pumping. Let it run for a few minutes and cycle the hydraulic controls. If its still not working check the filter.

Dan
 

JimDeL

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Different model, but my shop manual says to let the tractor run for 10~15 minutes at a high idle after a fluid change before trying to use it. YMMV
 

Michiganpat

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96 M5400
Aug 3, 2025
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Michigan
You should not need to bleed air out of the system after an oil and filter change. If you have no hydraulics then you have something more seriously wrong. Was it a routine service you did? Or were you changing because you were having problems?
Just routine change everything worked before
 

TheOldHokie

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Just routine change everything worked before
Read my earlier post. My guess is your pump is not priming for some reason. I would look hard at the new filter. Believe it or not but people have installed them with some of the pkastic stoll stuck to the end... If the pump is working the filter will be full of oil.

Dan
 

Michiganpat

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96 M5400
Aug 3, 2025
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0
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Michigan
Read my earlier post. My guess is your pump is not priming for some reason. I would look hard at the new filter. Believe it or not but people have installed them with some of the pkastic stoll stuck to the end... If the pump is working the filter will be full of oil.

Dan
Ok I’ll check it out