Is there a block drain plug on the B7800?

   / Is there a block drain plug on the B7800? #1  

sixdogs

Super Star Member
Joined
Dec 8, 2007
Messages
13,705
Location
Ohio
Tractor
Kubota M7040, Kubota MX5100, Deere 790 TLB, Farmall Super C
In changing the anti-freeze in my B7800 I can't seem to find a block drain plug and the owner's manual has no mention of it. Just the radiator drain that doesn't seem to do a thorough job. That seems odd. Anyone know if there is a block drain plug on the B7800?
 
   / Is there a block drain plug on the B7800? #2  
I have changed the coolant 3 times now, every 2 years, and drained the system via the factory supplied drain valve. Once the radiator cap is off, I got the system completely drained, every time. Remember the drain valve is located lower than the lowest part of the engine cooling system... So this should work. I have not seen any other drain cock on the cylinder block, only the nylon one on the coolant hose.
Hope this helps you Sixdogs.
 
   / Is there a block drain plug on the B7800? #3  
On my m8540 the block drain is almost behind the water separator down below it. Mines just a bolt with a compression washer. it makes a **** of a mess if you pull it
 
   / Is there a block drain plug on the B7800?
  • Thread Starter
#4  
Thanks... Dan W has it right and as I think about it realize that the radiator plug is the lowest spot and will indeed drain if on level ground. I was on a slight slope of the barn pad but can fix that tomorrow.

And xring, I used to have a larger Kubota and was able to find a petcock with hose attachment that allowed me to drain the anti freeze without the huge mess it used to be.

Thank you.
 

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