CM870

[cummins379]

(01-01-2017 )JLDees Wrote:  Greetings all,

New to the site I am currently in the process of upgrading trucks, Looking at an 07 W900L with a CM870 with 750K on the clock, in the photos it looks like it has the factory egr cooler and the turbo looks like its been replaced. No history on the engine, salesman says "all original" Now what I have in my mind is I plan to replace the EGR Cooler, Belt Tensioners, Water Pump, Fan Hub (Unless feels smooth) and an EGR tuneup/cleanup. There are some differences in the videos of Rawze's cm871 Tuneup series on youtube, this one has the swelled down venture with the EGR hose in front of the compressor intake (worries me if its pumped soot in the air tanks) and the intake elbow looks like it has 2 sensors I'm assuming Delta T/P and IMAP but they look different than the later cm871s (Images attached). I plan on asking if they will do oil samples, but if its had a recent PM that might not show what I need to know, If not ill pull the valve cover in person to look at the cams, rollers rockers etc. and see how clean it is.

Option 2 is an 08 W900L similar spec same miles with a cm871 that has been "mandate'd" with the same miles that is being sold by the owner but I haven't got ahold of him yet. I am leaning towards the 07 for the specs, and closer to go get.

Application for the truck, It is replacing my 79 Extended Hood W900A with a late B model ATAAC 3406B which I hate to see go as it runs like a clock and has never let me down, The truck however at 38 years old the air and electrical systems are wearing my patience. I only turn 20-30k miles per year doing various things, I pull my demo end dump and belly dump for a local quarry, Heavy Haul (my own equipment for dirt work business) and my own products Log Home Kits, Rough Lumber etc. I Live at 9000ft elevation and make frequent pulls and descents on our 16 mile 6% grade along with several other hard pulls throughout Colorado and NM

Main questions are the sensors on the cm870 mentioned above and if anyone has a similar setup and if there is a pipe within the venture for the compressor to keep it from sucking soot. And what other sensors on the cm870 would I be smart to carry? Thanks in advance

Josh

so there is no imap sensor on it