Yanmar FX22D and all radiators

   / Yanmar FX22D and all radiators #1  

YanmarFX22D

New member
Joined
Sep 5, 2018
Messages
1
Tractor
Yanmar FX22D
This has been discussed before but the post have a little information here and there, I hope I have gathered most of the data from my experience.

I have a Yanmar FX22D I purchased in 2006 and now 12 years later it is also starting to heat up and the gauge was moving closer and closer to hot and the other day boiled the water into the overflow. First I got two gallons of apple cider vinegar to flush/run in the system hoping the mild acid would help remove any deposits. I also ran prestone radiator flush for three hours and that got a lot of dark water deposits flushed out. But still I did not like the fact that when the tractor was cold and running it was pushing water through the pump and thermostat housing into the top hose and radiator; so something was wrong as the thermostat should have held the water / coolant in the engine until released. Here is what I found out: The radiator fins had an abundance of dirt restricting air flow. So blowing it out with compressed air often and also using a water hose rarely it did not get the dirt and crap out. I removed the radiator and used "Kaboom" bathroom cleaner and then forced it through with 125 psi compressed air. Then put it in my laundry room sink to soak the dirt out. Then I found out when this tractor was 'refurbished' the thermostat was not replaced (not a good idea). This should eliminate the cooling problem. Bottom line is I thought I had the dirt and trash out of the fins when I did maintenance, but I was wrong and it could not be seen from my view point. The dirt from the field and floating seeds and other very small debris got tucked away and could not be seen. I straighten out all the fins with a screwdriver as the new fin straightening tool was ok for the fins that were bent slightly. Tomorrow I hone the thermostat housing to remove burrs and install the new thermostat after I put it in a pot and bring the temperature up to 160 to see if it is functioning correctly. This should fix the over heating problems.
In summary refurbished tractors are just that, parts used and new are used to get it running, minor parts like thermostats are not necessary in this rebuilders mind. The tires were undersize but apparently all they had and I replaced with the correct size, and this made a difference in turning and using the loader and having a more level load when heavy.
 
   / Yanmar FX22D and all radiators #2  
Good post. You've just reminded me that I haven't cleaned my rad for some years. I'll get this done today.
 
   / Yanmar FX22D and all radiators #3  
I've been hearing this type of complaint a lot more in recent years. The radiators in tractors are made the same way as automotive radiators...high density fins to get the most cooling in the smallest available space.

The radiator fins on the Farmall C have about 3/32" spacing...even wild oat seeds will flow right through and you never lose cooling capacity.
 

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