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Supercharged Cummins NHRS W/Onan generator

Joined
Nov 24, 2020
Messages
7
Location
MT
Occupation
Diesel Tech
I have Been given the task of getting a large generator running. It has a cummins NHRS engine. Mid 50's I believe. I have acquired a parts manual for it but am in serious need of any service information possible. I apologize if I posted in the wrong category. Thank you very much for any help
 

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
17,248
Location
WWW.
Member that might have a spec manual--kshansen. I don't have anything complete that
goes back that far. But there is Barrington Diesel online source for older Cummins.
 

Junkyard

Senior Member
Joined
Jun 5, 2016
Messages
3,650
Location
Claremore, OK
Occupation
Field Mechanic
I have some old Cummins stuff, looks like it was printed shortly after the Declaration of Independence. I’ll see if there’s coverage for that old girl.
 

Birken Vogt

Charter Member
Joined
Nov 30, 2003
Messages
5,346
Location
Grass Valley, Ca
I have Been given the task of getting a large generator running. It has a cummins NHRS engine. Mid 50's I believe. I have acquired a parts manual for it but am in serious need of any service information possible. I apologize if I posted in the wrong category. Thank you very much for any help
Over on the web site smokstak.com we discuss antique generators and there is one or two antique Cummins guys on there who probably have specific knowledge of this unit.
 
Joined
Nov 24, 2020
Messages
7
Location
MT
Occupation
Diesel Tech
I will get some pictures when I get back out there. Thank you for your time
 

kshansen

Senior Member
Joined
Mar 11, 2012
Messages
11,213
Location
Central New York, USA
Occupation
Retired Mechanic in Stone Quarry
I do have a shop manual that includes the NHRS-6. It does not have anything about the fuel pump.

I'm guessing the first step I would take would be to see if it even turns over.
If you need spec's like valve setting I could scan some pages.
 
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