1st post: Hydraulic direction problem

   / 1st post: Hydraulic direction problem #1  

Shaun M

New member
Joined
May 16, 2018
Messages
6
Tractor
Kubota L3901
I have a new Kubota L3901, 50 hours so far, and I had the dealer put top and tilt on the rear. Sometimes when I press the hydraulic control lever for either cylinder it goes in the opposite direction than it should. The dealers mechanic said this is normal because valves leak inside if theyæ±*e not å��ully engaged? Sometimes if I stop and restart the cylinder it will go the correct direction, other times the cylinder has to fully extend before it goes the correct direction. Along with being annoying, it could easily become a safety issue. Any ideas of whatç—´ going on?
 
   / 1st post: Hydraulic direction problem #2  
Welcome to the forum...
...Your issue query is one I don't recall seeing mentioned before...it is extremely odd IMO...I have had T&T for many years and I have never experienced this issue...changing the hoses/remotes will make the valve work opposite but I have never seen a cylinder move like you've described...

Will be interesting to see how this works out...Good Luck...

Just an off the wall thought that there is something that is not right with the plumbing of the remotes and or the valve...??
 
   / 1st post: Hydraulic direction problem #3  
Are the valves spring centered or do they have a detented float position.
 
   / 1st post: Hydraulic direction problem
  • Thread Starter
#4  
Are the valves spring centered or do they have a detented float position.

I don稚 really know. How do I determine that?
 
   / 1st post: Hydraulic direction problem #5  
To answer your question...when you activate one of the levers of the control valve...does it spring back to center and stop the activity...or...are you pushing the lever into a detent that holds it in a forward or backward position?

I have detents w/wo float on my T&T valve but again it has never acted in the way you've described...
 
   / 1st post: Hydraulic direction problem
  • Thread Starter
#6  
To answer your question...when you activate one of the levers of the control valve...does it spring back to center and stop the activity...or...are you pushing the lever into a detent that holds it in a forward or backward position?

I have detents w/wo float on my T&T valve but again it has never acted in the way you've described...

Mine spring back and stops the cylinders motion.
 
   / 1st post: Hydraulic direction problem #7  
Shaun
Does this happen to both functions or just one?
Does this happen in both directions.
Does this happen when there is no load on the 3 point?
 
   / 1st post: Hydraulic direction problem
  • Thread Starter
#8  
Shaun
Does this happen to both functions or just one?
Does this happen in both directions.
Does this happen when there is no load on the 3 point?

Good questions.
It happens to both functions.
I’m almost positive it happens in both directions.
I don’t think it happens unless I have a load on the 3pt.
 
   / 1st post: Hydraulic direction problem #9  
Shaun
Does this happen to both functions or just one?
Does this happen in both directions.
Does this happen when there is no load on the 3 point?

How are any of these significant??

What would they be indicative of???
 
   / 1st post: Hydraulic direction problem #10  
/pine
Reason for the questions was to try and determine if a failing load check could cause this.

If a load is trying to retract the cylinder and you move the lever to try and extend the cylinder slowly the leaking load check would allow the cylinder to retract.

Shaun
Did you ever use either one of these valves for different function or were they installed for the tnt functions.

Getting late and my mind is foggy but trying to picture how the valves would operate if pressure & power beyond lines were switched.

Did Kubota provide a schematic for the additional valves?
 

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