Hydraulic testing

OlFerguson

Member

Equipment
4440, 1120D
Jun 1, 2017
192
11
18
Canada
Anyone have any tips and tricks for testing the relief valve on the kubota tractor with open LCS. Thanks for your time.
 

TheOldHokie

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L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
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windyridgefarm.us
Anyone have any tips and tricks for testing the relief valve on the kubota tractor with open LCS. Thanks for your time.
What specific model? In general you connect a pressure gsuge to the neutral circuit and then deadhead the circuit. Where and how to connect varies by model.

Dan
 
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OlFerguson

Member

Equipment
4440, 1120D
Jun 1, 2017
192
11
18
Canada
Those machines are a black box for me. I am not even sure they are open center. Do you have a loader on it?

Dan
yeah I have a m46 loader on it made by Alo (quicke) . I know with Kubota they seem to make different machines for different countries but im in Canada . Looking at the diagrams its an open centre, which I’m going to assume changes the way you test things.
 

TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
8,928
4,669
113
Myersville, MD
windyridgefarm.us
yeah I have a m46 loader on it made by Alo (quicke) . I know with Kubota they seem to make different machines for different countries but im in Canada . Looking at the diagrams its an open centre, which I’m going to assume changes the way you test things.
A simple way to check relief pressure is to use the loader. Plug a pressure gauge into one of the cylinder ports on the loader valve and operate the loader valve to send oil that port and hold it there to get a pressure reading. Do not operate any other ports at the same time.

Dan
 
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