2018年10月12日 · Hey, What are the recommended parts / Tips / Tricks when removing, cleaning, and re-installing the clogged fuel injectors on an NHC-250? Any guidance/Tips from those who have done it would be greatly appreciated! Thanks!! :beer:

2007年5月28日 · CONS -- parts availability, starts better than the NHC-250 in cold weather but still needs a sniff of ether I've had both NHC-250-powered trucks (M929A1, M928A1, M932) and 6CTA 8.3-powered trucks (M936A2, M932A2 and now two M925A2s). While I love the 6CTA 8.3 motor, I would suggest that anyone who is interested stick with the NHC-250-powered ...

2017年6月28日 · The NHC 250’s have become sort of infamous for cavitation caused liner failure. We saw some pitting damage in two motors but none on the third. Chasing cavitation issues was a red herring for us, it distracted me from what I was doing that was actually killing them.

2011年9月1日 · Now here's the deal: I've got an M818 that was running poorly, smoke, fuel in coolant, no power at all. So, I pulled the injectors and cylinder #2 had no tip left. I figured they are cheap enough I'll replace them all. After swapping the new ones in …

2012年6月4日 · NHC, no turbo, 240hp Physically, its about the same as an NTA (half way down page) Last edited: Jun 4, 2012.

2006年8月25日 · ive been told by cummins wrench turners, that to make a cummins 250 into a cummins 290 (addind turbo), you have to change the cam to the big cam, we have the little, do a major injector pump retune, change the basic timming, and a few other things to make this work. plus add cooling. i was going to do this on my m819, as a side note, found out that a jake set …

2011年5月22日 · I have M816 with the trusty 250 cummins. I have a few bad injector o-rings since I am getting fuel into the oil. I got the new o-rings but I need to know the torque specs for the injectors. I have the manuals on CD and all I can find is torque specs for the heads then the rocker arm "towers."...

2020年10月16日 · The NHC 250 does not have piston coolers, so you will not be able to run it hard. They did make small cams in the 400HP range though. You can step up to 290-300 injectors only if you turn up ur fuel pressure. you add more stress on the camshaft when you turn up the rail pressure.

2011年2月3日 · You're right, my bad. On Idaho Motor Pool's web site (where I have been shopping, cause it's close to my place) it says NHC 250 Cummins on all the 5-ton trucks (dump trucks, tractor rigs, and wreckers), all the listings for the M35A2's just say "turbo diesel".

2015年3月23日 · Recently purchased a '85 M936A1 Wrecker with a NHC 250. It had not run in over 2 years. I went through and replaced the fuel filter and oil filter and drained/replaced oil and fuel. The fuel primer pump works but only barely. Seems like the internal seals aren't sealing as well as they could.