Kubota KX033-4 Thumb will not retract

   / Kubota KX033-4 Thumb will not retract #1  

m7040

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Kubota M7040, MF 203 industrial, ZD331, RTV 1100 , Kubota Minix excavator, Unimog 404
The thumb will clamp down but will not retract. Wondering if someone could help with best way to trouble shoot?
 
   / Kubota KX033-4 Thumb will not retract #2  

groundcover

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southwest NH
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Do you have a splitter valve for the thumb that could have gotten bumped ?
 
   / Kubota KX033-4 Thumb will not retract
  • Thread Starter
#3  
OP
m7040

m7040

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Kubota M7040, MF 203 industrial, ZD331, RTV 1100 , Kubota Minix excavator, Unimog 404
On excavators it is not done with splitter valves
 
   / Kubota KX033-4 Thumb will not retract #4  

Seven Gables

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If that machine has both 1 way and 2 way flow to the auxiliary lines make sure you’ve got 2 way selected. If it inadvertently got 1 way flow selected theirs your issue
 
   / Kubota KX033-4 Thumb will not retract #5  

setxjeff

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Newton County, Texas
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Reverse the lines ,this will check if it’s fittings or valve or cylinder
 
   / Kubota KX033-4 Thumb will not retract #6  

hayden

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VT
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Kubota L5740 cab + FEL, KX121, KX080
If that machine has both 1 way and 2 way flow to the auxiliary lines make sure you’ve got 2 way selected. If it inadvertently got 1 way flow selected theirs your issue
This is the first thing I'd check too.
 
   / Kubota KX033-4 Thumb will not retract
  • Thread Starter
#7  
OP
m7040

m7040

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