Cummins Factory Parts Manual M939 Series ENGINE ONLY


The Person You Were Warned About As A Child
Super Moderator
Steel Soldiers Supporter
Monrovia, Ca.
I omitted the fuel pump and injector break down pages because I don't want anyone thinking they can buy the listed part and make a good working pump or injector. Leave that up to a professional. Some of the part numbers are old, this manual was printed in 1982. The number listed should get you a start that can be superceded to the latest p/n from Cummins, then NAPA, CR, etc.


I have one for the 809 series too, just need to scan it.


Last edited:
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website like our supporting vendors. Their ads help keep Steel Soldiers going. Please consider disabling your ad blockers for the site. Thanks!

I've Disabled AdBlock
No Thanks