Fuel Pump TM?

[ez8]

Does anyone have a TM number for rebuild of the GP21181 mechanical fuel pump?

Thanks.

[Elwood]

I've never found a TM that covers the specific fuel pump on the G-741 trucks. The closest I've found is TM 9-1828A Ordnance Maintenance Fuel Pumps, which was issued in 1945. The AC fuel pumps BK and BN covered in this manual are close to the fuel/vacuum pump in our trucks.

[ez8]

Darn. I've got the same TM and was thinking the same as you, Elwood. Seems like a knowledge gap in my nation's otherwise comprehensive manual base!

Was this fuel pump used in another MV? Perhaps we can cross reference with the TM for that vehicle. Is the fuel pump for the M38 the same?

[Elwood]

I'm not a Jeep guy, but I don't believe that the fuel pumps used in the M38 or M38A1 are the same as the M37. They're all two sided, i.e. with a fuel section and a vacuum section, but at a minimum the mounting bosses are different.

These pumps aren't especially complicated to disassemble and rebuild, even without a model-specific manual. Are you having an unusual problem with yours?

[ez8]

I bought a used on off the electronic bay and I like to collect the TM's for the various bits of machinery I find, that's all.

[Elwood]

The US Army seemed to have documentation for anything and everything, so my assumption (after reading TM 9-1828A and after being unable to find an update TM that includes the G-741 pumps) is that they simply continued to use TM 9-1828A. The BK and BN pumps are so close to our pumps (the rocker arm is different) that maybe they didn't need to issue a new TM.