My Willys 3A and 3B Community

3A, 3B, DJ Technical Knowledge Base => "Original"-- Technical Questions, Answers, Observations => Topic started by: stony on October 21, 2018, 01:23:17 AM

Title: Early CJ3A oil filters
Post by: stony on October 21, 2018, 01:23:17 AM

So, I ordered a oil filter from Kaiser  Willys that was supposed to fit a 3A.  The filter was OK, the right height, but the gasket that came with it was too small, about 4 1/4� and I needed one that was about 4 5/8�.  Seems that up to engine #40352 Willys used a Purolater canister (A-1230) and after that changed to a smaller diameter Purolater or Fram.  It looks like the canister is the same as the Military Junior, with the 4 piece straps spaced close together.  The only marking on the cover is P713.  According to Bob W�s book that would make it about October 1949 for the change.  What do you think Bob?  Here is a photo, yeah it is supposed to be black but I liked the orange ;).

Title: Re: Early CJ3A oil filters
Post by: mtnman37879 on October 21, 2018, 12:09:28 PM

My 1950 CJ3A has the filter with no straps and It takes the 4 1/4" gasket.

Title: Re: Early CJ3A oil filters
Post by: stony on October 21, 2018, 01:34:34 PM

Yeah, I am pretty sure that is the Fram filter.  The book lists four different filters.  The CJ3A parts book illustration shows yours and mine.