5103 hydraulics

   / 5103 hydraulics #1  

redkar

New member
Joined
Oct 3, 2025
Messages
4
Tractor
JD5103, JD5403
Haven't been here in a long time. Had to re-register. I replaced a 5 inch piece of hydraulic hose that connects two lines under the hood because it was leaking. This is a 2007 tractor. Now the lift arms are extremely slow to lower. I'm assuming air got into in the hydraulic system when I removed the old piece of hose. Is that the problem. How to fix it? Thanks for any help.
 
   / 5103 hydraulics #2  
Haven't been here in a long time. Had to re-register. I replaced a 5 inch piece of hydraulic hose that connects two lines under the hood because it was leaking. This is a 2007 tractor. Now the lift arms are extremely slow to lower.

Is this the 3 point hitch arms or front end loader? I suspect 3 point but not sure since replaced hose under the hood.
I'm assuming air got into in the hydraulic system when I removed the old piece of hose. Is that the problem. How to fix it? Thanks for any help.
If 3 point did you move the rate drop control when replacing the hose?
 
   / 5103 hydraulics
  • Thread Starter
#3  
It's 3 point. No, did not move the rate drop control. It seems to be stuck, and I haven't tried to force it.
 
   / 5103 hydraulics #4  
I'm not sure what five inch rubber hose would be on a 5103 other than the suction adapter to the hydraulic pump. If that's not secured properly or the clamps aren't tight enough some air ingestion is possible. Not sure how that would affect three point lowering speed though.
 
   / 5103 hydraulics
  • Thread Starter
#5  
The location is under the hood, a 4"x4" metal junction box on the right side of the firewall, four metal lines coming in/out of it. The rubber hose I assume is for vibration absorption.
 
   / 5103 hydraulics
  • Thread Starter
#7  
Yes, that's it.
Is this the 3 point hitch arms or front end loader? I suspect 3 point but not sure since replaced hose under the hood.

If 3 point did you move the rate drop control when replacing the hose?
I worked with the drop rate valve stem this morning and got it freed up then backed it off couple of turns and that fixed the problem. The links are working correctly now. Thanks guys for the replies. Can always count on TBN.
 
   / 5103 hydraulics #8  
The location is under the hood, a 4"x4" metal junction box on the right side of the firewall, four metal lines coming in/out of it. The rubber hose I assume is for vibration absorption.
The 3 point return oil would typically dump directly into the transmission final drive housing so a hose up under the hood should have no effect on the 3 point lowering.
 
   / 5103 hydraulics #9  
Yes, that's it.

I worked with the drop rate valve stem this morning and got it freed up then backed it off couple of turns and that fixed the problem. The links are working correctly now. Thanks guys for the replies. Can always count on TBN.
Thanks for letting us know the fix and glad was something that simple
 

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