Yanmar sitting outside in rain, exhaust uncovered!

   / Yanmar sitting outside in rain, exhaust uncovered! #1  

pretendfarmer

Gold Member
Joined
Jul 15, 2013
Messages
250
Location
WA
Tractor
John Deere 790
I am worried because my tractor is sitting outside in heavy rains, and the exhaust is not covered. I am out of state right now, and cannot get back to it for a week or so. It will ultimately be stored under cover, but the rains came early and heavy. There has been nearly 3 inches of rain. What can I expect has happened from the heavy rain, and what can I do to remedy it once I get back?
 
   / Yanmar sitting outside in rain, exhaust uncovered! #2  
I expect these things get dunked once in a while in the rice paddies - and that is why they have a compression release.

I would remove the exhaust manifold (4 bolts) and pour the water out of the exhaust. (Its gasket is usually re-usable). Then USE THE COMPRESSION RELEASE to spin it and blow any water out of the cylinders, before cranking it under compression - incompressible water can shatter a piston or bend a rod.

Then maybe change the oil if it looks milky.

I doubt you've hurt anything.
 
   / Yanmar sitting outside in rain, exhaust uncovered!
  • Thread Starter
#3  
The exhaust does have a 90 degree bend at the top, but rain doesn't always come straight down.
 

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