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Does anybody know a source for a NOS A-1234 spring on the cover bolt for the oil filter? Does anybody have a source and part number for an equivalent commercial substitute? In case I have to go hunting, could somebody measure one and provide the dimensions please? Any advice always appreciated. Thanks!

Are you sure which Fram filter you have? There are several civilian and the Army's military junior. They do not all use the same spring.

This is your photo of yours:



These are civilian filters:




I suggest you review the last 7 illustrations on this page of my photo album: http://www.willysmjeeps.com/v2/modules. ... php&page=1



And the last 10 on this page: http://www.willysmjeeps.com/v2/modules. ... php&page=2

Note the filter shown in the M38 ORD 9 does not use the A1234 spring but a different one. I have added the applicable pages of the ORD 9's for the MA, MB, GPW, M38, M38A1/M170. Note the A1234 spring is tapered from 13/16" to 17/32". The rest of the springs are mostly straight.

Midwest Military has some in stock.
John

After reading the pages Wes kindly pointed and looking at my filter again, I can't say for sure that I have a Fram filter (I mistakenly assumed all Juniors were Fram), but do believe I have a Military Junior filter. The cover is stamped "MILITARY STANDARD FILTER" and is 5-1/2 inches in diameter. I now see that the Junior was made by either Purolator, AC, or Fram, and a correct spring could be several different part numbers (straight or tapered) and any of them, including A1234, should be interchangeable and work just fine.

The Willys tapered spring A1234 seems to be the more common (less obscure) choice to work with. At least having the taper dimensions helps (having the overall length would also be helpful) if I have to go find one.

The question I now find myself asking is: "what would Wes do?"

I have MWM on my speed dial too.

Thank you gentlemen!

To sort out filter ID's here are some good links:

For the AC lineup:
http://www.stovebolt.com/techtips/engin ... 20filters/

For the Fram Units use the fram web site. C3 & C3P Element are for the civvy Fram and the C4P is for the Junior.

Jeep type club articles on filters:
http://www.thecj2apage.com/forums/what- ... 19963.html

Our web site forum oil filter discussions:
http://www.willysmjeeps.com/v2/modules. ... ic&p=35225
http://www.willysmjeeps.com/v2/modules. ... pic&t=9346
http://www.willysmjeeps.com/v2/modules. ... highlight=
http://www.willysmjeeps.com/v2/modules. ... 5224#55224

I think there's nothing quite like the feeling I got (and the silly smile on my face) when I open a package dated January 1952, wipe cosmoline off and snap a part into place for a perfect fit. It's just a spring, but it sure is motivating!

I'm thankful for this forum and what you do.

I measured it at 1-1/2 inches long.

What was the cross section diameter of the spring wire?



On that package the Ordnance stock number G509-0389511 represents a spring that was originally used on a G509 vehicle which would most likely have been a Diamond T 4T 6x6 WWII vintage.

The manufacturer's part number CC-1090713 is a Chrysler Corp Part Number and was used on WWII Dodges and the M37 Dodge 3/4T pickup. The M37 parts list, ORD 9 SNL G-741 Jan 54 lists this description under group 0106.23 Fram Oil Filter: Spring, compression. 0.082 diameter wire, 29/64" OD (one end), 25/32" OD (other end), 7 coils, 1 1/2" free length (cover screw).
Part & Stock numbers listed are: G509-0389511 (ord. Stk #), 11583 (Frame part #), 1090713 (Chrysler part #) & A308282 (ORD Part #).

This spring doesn't appear to be as cone shaped as the A1234 spring but it fits perfectly. I got the mike out and measured:

Wire cross-section diameter .08
Spring base diameter (wider part near end of bolt) .8 outside, .64 inside
Spring top diameter (narrower part near bolt head) .625 outside, .465 inside


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Thanks Wes!

Your copper washer looks one size too large?

Doggonnit Wes! It sure is! I picked up a box of ten NOS WO-A-1233 (box also marked G116-1593934, FM-GPW-18675A) for a buck a piece. I did recognize it as an MB part, but went ahead anyway and did that nasty "assuming" thing again when the ad said it fit M38. I thought it was a little sloppy on the bolt and I'm nowhere near saavy enough to know proper copper gasket fitment. Should've asked the seller for dimensions beforehand against the ORD9 before shelling out the geeters. Doggonnit!

I see ORD9 Group 0106.2, page 45 shows the correct gasket is 5308281 (WO-119982, FR-11581) and should be .75 OD, .54 ID, and .062 thick.

The wrong ten that I have are .875 OD, .64 ID, and .032 thick.

Thank you for pointing it out, very much appreciated. Could you kindly suggest a source for the right gasket? Coincidentally I also need some for the valve cover bolts.

I don't try to find the military replacement copper gaskets. For the flat washer type you have easier choices. The easiest are the auto brake system copper gaskets used on caliper ports and etc. Some are ribbed and some are smooth but either will work. So will an old standard AN901-C copper gasket AN901-6C.