Mx5200 hydraulic overheatimg

   #1  

tgarber22

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Apr 23, 2021
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Kubota MX5200
1st time to the forum here. New to me tractor MX 5200 started overheating the hydraulics not long after I got it. Bucket would start to run slow After about 30 minutes of heavy operation, Even after radiators were blown out with air nozzle. Only 750 hours on the tractor and hydraulic filters were changed about hunderd hours ago By the seller. Where should I start with diagnosis I do all my own mechanic work. Also I don't have a workshop manual like I did for the last tractor what would you suggest
 
   #3  

5030

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Somewhere, but not there....
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Kubota M9000 HDCC3, Kubota M9000 HD, Kubota Sidekick UTE
You need to be more specific about your issues. Coolant or hydraulics and how hot and what are the symptoms?
 
   #4  

jonsstihl

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make sure you don't have a valve lever that has been bumped into the on position and dead headed that would heat up fluid fast.
 
   #5  

Doc G

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Feb 22, 2021
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Waco, Republic of TX
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Kubota L3200
This sounds like an interesting problem but I echo Michael in wondering how you know? Most machines don't have a hydraulic fluid temp gauge. (Does yours?) Which radiators are you talking about? Is it a HST or gear-drive machine?
 
   #6  

Smokeydog

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Kubota B26, M59, M5030DT
Also detail the brand of filters and hydraulic fluid. I only have bought used equipment and is the first thing I change so I known what I’ve got.
 
  
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#7  
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tgarber22

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Apr 23, 2021
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Kubota MX5200
Thanks for all the replies guys. Hydraulics work fine when the tractor is cold but after operation for 30 minutes with loader from hydraulics working super slow like hydraulic fluid bypassing. I've been told this is common when hydraulic fluid gets too hot. Last week when I pushed it a little farther after noticing bucket raising super slow My drive hydraulics ended up getting slow and I could feel it. I have remotes On the rear and front. No implements just the bucket. 750 hrs. New filters from first owner at 650. Putting new filters and super udt2 in today. Cleaned hyd fluid radiator
 
   #8  

Michael In Tennessee

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Mar 14, 2018
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Niota, TN
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Kubota MX4800HST
Are the front/rear remotes factory options? If not I'd be concerned they are undersized and contributing to problems. I have the same tractor with no issues. You could also have water in the fluid of other blockage type issues.
 
   #9  

Smokeydog

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Kubota B26, M59, M5030DT
You are doing the important steps first and hope you see an improvement. Much debris in hydraulic cooler or radiator? Fan belt tight? Also check filter bases the center pipe nipple is tight and clear from old filter gaskets. Air inleakage causes cavitation causes heat.

Check remotes and third function are working properly and not dead headed. I’ve not had that problem but could be. There was also a post sometime back where the 3pt lift was dead heading at the upper limit that required an adjustment.

The M59 has valves and connections that have to be changed and aligned properly for 3pt or backhoe operations. Not sure if yours has/had extra equipment.

Please share your solution.
 
  
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#10  
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tgarber22

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Apr 23, 2021
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Kubota MX5200
Man the super udt2 quieted things down. Not much metal on the hyd fluid magnet. 3pt can get that whine at the top end. Think I need to adjust that linkage. Need to find some info on that. Anyone have a wsm instruction on how to? I'm assuming till it stops whining but the instant I assume you know what happens
 
 
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