Cummins NH250

[jeepcato]

Hi, Does anyone know about a repair manual for this engine ? I need to replace 1 sylinder kit and 2 injectors...... i have the parts but need installation instructions an torques etc......
this engine is in my M-929 A1 dump truck

 

[M35A2-AZ]

I just rebuilt a NHC250 and have all the torques valves, if you let me know what you need I can send them to you. A repair manual is very hard to find, may try Ebay.

 

[jeepcato]

I just rebuilt a NHC250 and have all the torques valves, if you let me know what you need I can send them to you. A repair manual is very hard to find, may try Ebay.

Hello,

well i am replacing 1 cylinder liner kit.... new piston, so i need the torque for the cylinder heads and for the piston rod....... i also need instructions for valve and injectors clearence as im replacing 2 injectors

 

[Guyfang]

Updated TMs TBs MWOs for the M939

A couple of these may be repeats but I'll include them anyways in the interest of trying to make applicable TMs, TBs, LOs, and MWOs easier to find. There are only a couple missing and I'll notate those in hopes that someone else may have them and can link them as well. Please understand that...

www.steelsoldiers.com

Updated TMs TBs MWOs for the M939 (Cont'd)

Since the last post was being a real PITA and didn't like having so many links in it I had to break this into 2 posts. TM 9-2320-272-24P-1: PUB DATE 08/27/2012; REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL) FOR TRUCK, 5-TON, 6X6, M939A0/A1/A2 *SUPERSEDURE NOTICE - This manual supersedes TM...

www.steelsoldiers.com

These two links might help you a lot. Look in the Forum TM Forum.

 

[M35A2-AZ]

Here is what I have and used on my rebuild.
Oil Pan bolts 40 lb-ft
Intake 30 lb-ft
exhaust bolts 25 lb-ft
Rocker box covers 15 lb-ft
Rocker box bolts 65 lb-ft
Head blots 25 then 100 then 200 then 305 lb-ft
Rod bolts 75 then 150 loosen then 30 then 75 then 150 lb-ft
Crankshaft Main 140 then 300 Loosen then 140 then 300 lb-ft
Valve nuts 45 lb-ft
Injector 70 lb-in