This article shows the correct G503 WWII Jeep tire pump with markings
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1. In WWII there were hundreds of thousands of Tire pumps produced and used throughout the war effort, not just for vehicles, or in particular jeeps. Lets review the time line on when tire pumps were introduced to jeeps. |
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2. Lets first look at the Tire Pump introduction to MB's. The first tire pumps were added to the bottom of the rear seat of MB's about May of 1942 and were the QMC grey color pumps. According to Nabholtz, the QMC pumps were continued on MB's until Sept 1942. These QMC pumps did not include the Air Chuck as part of the Parts list. Part is listed as WO-A7511. |
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3. These QMC pump pictures, sent from Robert Lukes ,shows the QMC tire pump having the knurled top of the tube. |
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4. On the bottom of the QMC foot pedal you should see the stamp 305592. |
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5. Nabholtz notes the change from QMC to ORD pump in Sept 1942. Here is a list of the possible pumps available with the ORD stamping. WALKER ORD - 305602 (OD color) ORD - 305602 (Forest Green color USMC?) ORD - 305682 (OD) DALTON FOUNDRIES ORD - (OD color) Circle N Stamped ORD - (OD color) |
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6. There are a couple of distinguishing features between pumps. Starting at the top of the tube. The type of cap is different among the manufactures. |
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7. At the base of the pump there are some differences in where the valve has been positioned. Each manufacturer decided on placing the valve at a different position. |
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8. The bottom foot pedals of the pumps are different as well. |
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9. Lastly, the air chuck nozzle, listed under part number WO-A-7511 or FM-GPW-17052 wasn't added until the early 1943 parts lists. Therefore, prior to that time, this air chuck would not be included on the air pump on the jeep. |
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10. The pump will fit snugly under the rear seat with the clamp on the handle, and the air chuck nozzle fitting through the lower bracket. |
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11. For additional details on Tire Pumps and checking documentation read this note by Jim Gilmore Click Here Hopefully with your restore, you won't have to use your WWII tire pump like this soldier. Which pump is he using? Because his jeep is a Ford (notice safety latch on dash), and the pump having a knurled top, it is probably a Walker pump. |
