Ted
I eliminated the hex head oiler all together in my M38 engine. I felt that the oil coming from the oil filter was more than enough. My engine had a #4 rod bearing failure when I bought the MB. If I had known about the tech note, I would have put in the .015 holes. I have over 1000 miles on it since the rebuild with no problem. I am curious what the restrictor diameter is in the oil filter.
Dave Fillman
45 MB
---- you wrote:
>
> .....if this is any help.....
>
> I've a copy of the CJ-2A/CJ3A/B Jeep shop manual.
> This would pretty much covers the GPW/MB, M38 and
> M38A1 motors.
>
> Anyway...., a tech note states that the Hex Head oiler, just above
> the lower gear, was drilled with twin .040" holes. It stated that
> this item should be updated to the smaller, .015" twin holes.
> I brazed mine over and drilled new, smaller holes.
> I may not have the exact diameters right, but you get the point.
> My notes and TMs are elsewhere.
>
> This was done to prevent, #1 rod and possibly the first Main bearing,
> damage. The sprayer is right there near both those bearings.
>
> I've done this mod, and kept the original filter unit, and have
> not had any bearing problems after many long and hard miles
> on my M-38.
>
> Hmmm, not having this oiling problem, think I'll pull
> the filter unit off and measure the diameter of the restrictor in
> there for my notes. Anyone interested, when I determine that measurement
> I'll shoot it to yah, along with the OLD and NEW sprayer
> diameters.
>
> Ted.
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