Ford Lehman 120 injector pump oil change

[Mobcat]

Hi All have a Lehman 120 and for the life of me cant find the drain plug to change oil in the injector pump, and it seems like such a critical service item relative to longevity of pump, by other photos provided by owners of lehman 120 my injector pump looks different mine has a hose going from the top of the oil filter to the injector pump which i suppose puts engine oil into the injector pump and making the need for oil changes redundant and unnecessary
Thanks in advance for any advice
Michael

 

[timb]

are you sure thats a lehman 120? looks like a 135 what is the ford number on the valve cover? i have a american diesel it looks like yours.

 

[timb]

if its a 135 you don't have to change the oil .see the line goes from the oil filter housing to the pump .

 

[psneeld]

I agree with the injector pump thinking it's a 135...but the chromed valve cover could be easily switched like mine...a 130 with shiny valve cover.

Best to get the block serial (at least according to American Diesel).

 

[timb]

mine is an american diesel 136 not a Lehman and doesn't have a chrome valve cover. it also has 120 type manifolds . if it's a american diesel it will have the oil cooler in the fresh water loop .