I don't know anything about the military markings but as far as the "Jeep"
the 43 and 8 are the number of teeth on the ring and the pinion or 43/8 =
5.38:1, the axle ratio.
the 806279- is the engine casting number.
I believe that the "W" numbers, in your case W-12, are the numbers of the
mold for that particular casting but this only _my_ theory. There is no
factual basis for it and I am not aware of anyone who agrees with me, nor
am I aware of anyone who has information to the contrary but I think Willys
had to have multiple molds for each casting and would need to be able to
tell them apart for use in finding manufacturing defects, etc, As to the
other stray characters like D, GU or GR, I have no guess other than some
Willys internal coding. Of course, I could be wrong about the "W" number
and these are how they distinguish one molds from another.
Oh well, if you require any more "non"information, I be happy to provide
> From: Scott Strance <Strance@classic.msn.com>
> To: email@example.com
> Subject: [MV] Maint. Depot Codes and Other Assorted Questions...
> Date: Wednesday, October 15, 1997 10:42 AM
> As I continue on the restoration of my 53 M38A1, I have come across many
> "Overhauled At" metal triangular tags. Can anyone shed some light on
> these may have been done? The last known physical location of my jeep
> the Tulsa Oklahoma area with Civil Defense. The data plates indicated
> 55511 with a date of delivery of 08/53. The patent plate also indicated
> 55511" The jeep appears to be all intact as best I can tell, ie:blackout
> lights, 24V, dataplates, 16" rims, original springs, gauges etc.
> Voltage Regulator, "Overhauled At CSMG 06/72" Where is CSMG?
> Distributor, "Overhauled At OKLANG 12/68" Where is OKLANG?
> Fuel Pump, "Overhauled At CS S 4/66" Where is CS S?
> Under the hood at top center was stenciled "TI Dec 66". What does this
> Also, both front and rear axle housings had a tag with the numbers 43 and
> just under it. What's that mean?
> The block casting on the side indicates "806279-W-12-D-AR" with a "GU"
> "GR" to the far right. The number 12640 is stamped on the front of the
> just under the thermostat neck. And on the bottom is a 3"x4" plate that
> "CSMS 5/25/66, S/N 65832. Bore +40, Mains -010, Rods -020" Is this
> correct block? What may be the difference between the stamped s/n and
> on the rebuild plate?
> The carbureator doesn't have any ID markings other than "Rochester GM
> Carbureator, Patents Applied For" and the fuel mixture 'brown round
> next to it is stamped "GM-Lean/Rich" with arrows. Is this the correct
> a replacement as I think it is?
> The front bumper was stenciled "45BDEX 145G (bumper ctr)
> If anyone can respond about the Maintenance tags or other M38A1 owners
> the specifics, I'd appreciate it greatly.
> Scott - Austin Texas
> 53 M38A1 (in lots of parts, but getting better)
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