Water separator warning light

w.reiche

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Kubota MX5400
Nov 21, 2022
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Ottawa
I have a 2020 MX54000 with 65 hours on it. Starting last weekend, about every 4 hours, the water separator warning light comes on for about 10 seconds and it beeps three times. Then the light goes out. When I look at the separator, the red ring is at the bottom. Any ideas? Anyone have experience with a faulty sensor for this? Am I looking at the wrong thing for this warning light? Draining the water separator is supposed to be 400hr service.

IMG_3609_small.JPG
 

MOOTS

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My 6000 does the same thing. I’ve even replaced the bowl and sensor under warranty, same symptoms. I have found it only does it at lower rpm, when backing up to implements. I let it beep and go on about what I’m doing.
 
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mcmxi

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I haven't experienced this on either of the MX6000s. I had the open station from new and put ~110 hours on it before selling. I have ~130 hours or so on the cab version but also without issue.

There must be something in the water! I was at a friend's for dinner yesterday and his L4060 is out of commission with what he thinks is a water in fuel issue. He didn't have a light or buzzer come on, but he had 2" of water in the bottom of the separator. Even after draining the fuel he couldn't get the engine to stay running. :unsure:
 

North Idaho Wolfman

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Take the bowl off and clean and dry the bowl then spray some WD40 on the sensor.
Then reinstall.
 
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Heehaw

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MX5400hst Kubota Z726X
Oct 4, 2022
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Michigan
I have developed the same problem on my year old MX5400 with about 68 hours but it only happened once earlier this week.
I read somewhere that there was a service bulletin issued for the problem.
Anyone know anything about it.
 

MOOTS

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I have developed the same problem on my year old MX5400 with about 68 hours but it only happened once earlier this week.
I read somewhere that there was a service bulletin issued for the problem.
Anyone know anything about it.
Don’t know of the service bulletin, but I told my dealer what was going on and they gave me a new bowl/sensor to install. It is still acting up after sensor replacement.
 

n4khq

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M6040, M7040, L39 Backhoe, M8560, MX5800HST, MX6000
Nov 10, 2018
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My MX6000 is doing the same. No water in the bowl, 65 hrs on tractor. not often but has been doing it for several months. Seems to be worse on startups.
 

freudianfloyd

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Kubota MX6000, Massey Ferguson 150, Long 2460, John Deere 410J TC
Sep 30, 2024
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13
Ohio
My 2 day old MX6000 just did this on me. Any updates on a fix? Obviously I woukd call the dealer about it when they open.
 

MOOTS

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My 2 day old MX6000 just did this on me. Any updates on a fix? Obviously I woukd call the dealer about it when they open.
See my replies above. Maybe do like Wolfman said.

Just bump the idle up and deal with the beeps like I have been doing.
 

freudianfloyd

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Kubota MX6000, Massey Ferguson 150, Long 2460, John Deere 410J TC
Sep 30, 2024
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Ohio
See my replies above. Maybe do like Wolfman said.

Just bump the idle up and deal with the beeps like I have been doing.
It went away after I revved it up a bit and even after puttering around the yard at low rpm, it didn't come back. Hopefully it won't be an issue.
 
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mcmxi

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It went away after I revved it up a bit and even after puttering around the yard at low rpm, it didn't come back. Hopefully it won't be an issue.
Still weird. I posted back in May of last year that I haven't had that issue despite owning two MX6000s. Now with 200 hours or so on my second MX6000 I still haven't had this issue. For what it's worth, I treat all diesel with Stanadyne and have for years, decades actually. Is this significant? I have no idea.
 

MOOTS

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It went away after I revved it up a bit and even after puttering around the yard at low rpm, it didn't come back. Hopefully it won't be an issue.
Don’t worry, it’ll come back. Lol.
Once mine beeps that day, it’s usually done, as I am working whatever implement I was backing up to when it started beeping.
 

freudianfloyd

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Kubota MX6000, Massey Ferguson 150, Long 2460, John Deere 410J TC
Sep 30, 2024
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Ohio
Don’t worry, it’ll come back. Lol.
Once mine beeps that day, it’s usually done, as I am working whatever implement I was backing up to when it started beeping.
It did today. Beeped once or twice when I first started bush hogging. Then it stopped and didn't come back.
 

whitetiger

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TSB-2024-018-E
FIX AS FAIL EXTENSION:
MX-Series; Water Separator Light False Readings on MX5400 and MX6000 Tractors


Models involved: MX5400DT, MX5400DTC, MX5400F, MX5400HST, MX5400HSTC, MX6000HST, MX6000HSTC

Issue: Machine vibrations may cause the water separator warning light to illuminate intermittently when the separator sensor is functioning properly, and no water is in the separator.

TC860-99910 STAY,KIT (SEPARATOR,C) CAB 1 required
TC860-99920 STAY,KIT (SEPARATOR,R) ROPS 1 if required

Kit and installation are covered by Kubota for 5 years from the retail date.
 
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mcmxi

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Awesome @whitetiger . Just called and spoke with service, rops part is on back order. But he will get me one on the way.
I haven't had this issue yet but will talk to the dealer near me and get one here too.
 

jyoutz

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MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
Jan 14, 2019
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Still weird. I posted back in May of last year that I haven't had that issue despite owning two MX6000s. Now with 200 hours or so on my second MX6000 I still haven't had this issue. For what it's worth, I treat all diesel with Stanadyne and have for years, decades actually. Is this significant? I have no idea.
I use Mr Funnel to fuel and have never encountered this issue.
 

mcmxi

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I use Mr Funnel to fuel and have never encountered this issue.
I haven't either, but given that the improved water separator bracket is only $55 or so, I ordered one this afternoon. There are three in stock in GA. Based on the TSB posted by @whitetiger it's a vibration issue. Why some would have the problem and others not remains a mystery. I would assume that Kubota did a running change and started using the improved bracket at some point, but maybe not.
 

MOOTS

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MX6000
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I haven't either, but given that the improved water separator bracket is only $55 or so, I ordered one this afternoon. There are three in stock in GA. Based on the TSB posted by @whitetiger it's a vibration issue. Why some would have the problem and others not remains a mystery. I would assume that Kubota did a running change and started using the improved bracket at some point, but maybe not.
I was told the rops one is like $800. Ridiculous. He had the same part number as the TSB states.
 

mcmxi

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***Current*** M6060HDC, MX6000HSTC & GL7000 ***Sold*** MX6000HST & BX25DLB
Feb 9, 2021
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