I got the corrosion (DF140)

[Auburn02]

Ooh, ouch, that would suck.

[macedonia]

I have the twin 2007 DF140s with approx. 875 hours ea. Just discovered the issue this week. A local machine shop was unwilling to try to remove the plug as they not have good success with this type of problem. A neighbor has a TIG welding machine so we will try to attach a bolt then remove the plug and replace with an aluminum one. I am concerned that there is internal engine holder corrosion. In looking at the attached image what do you think about this approach? Any suggestions? If it doesn't work, I'm thinking the only viable option is to replace the engine holder(s).

[jHydroman]

I applied heat and Kroil over a period of several days before I tried to remove the plugs on my pair of DF 140's. Once I detected any I liberally applied more Kroil and gently alternated 1/4 revolutions until the plugs came out. Both plugs had a significant on the plug threads that extended in the exhaust passage.


Jim