Cummins NTA 370 question - AMT K-123 kit

[Goodwrench3]

I'm working on the AMT KW K-123 with the Cummins NTA 370. From the picture in this service manual, it doesn't look like the fuel filters are really supposed to attach to the side of the aftercooler like the instructions show ?

[Straightliner59]

It looks like the drawing isn't very specific, as to the correct mounting point. I would just move that part down to where the service manual shows it. Depending of course, on how far you want to go, with it. That would be the simplest solution.

[Muncie]

couple thoughts -

Is the shop manual KW or Cummins?

May want to check engine/fuel filter fit in the chassis.  KW may have had a specific engine spec with filters on the aftercooler to fit with something else.  The fuel filter location or plumbing in the shop manual location might interfere with the steering shaft or something else on the firewall.

[Goodwrench3]

Thanks for that --  it's actually from a Cummins service manual.

This is for the K-123 cabover, so I'm not sure what it may interfere with -- but yes, definitely something to check before moving it.  I was hoping someone who had built this kit could share what they had done.  I'll keep looking as well to see if I can locate a KW service manual.

[Muncie]

That shop manual is a good thing to have.  I'm not familiar with the kit.  Looking at the instructions, it appears that it is probably for clearance with the shift tube.

[Jim B]

The kit has the filter locations in the wrong location.  This might help: CM05 Jan 1991 Cummins NTA 370 & 855 album | Dutch Model Truck Club | Fotki.com, photo and video sharing made easy.

[Goodwrench3]

That's an interesting article -- it's yet another different arrangement for the fuel filters.  The article references a NTA 855 vs. a NTA 370.

It does look like the 370 and 855 engines have different fuel filter locations -- here's an 855.

[Straightliner59]

1 hour ago, Jim B said:

The kit has the filter locations in the wrong location.  This might help: CM05 Jan 1991 Cummins NTA 370 & 855 album | Dutch Model Truck Club | Fotki.com, photo and video sharing made easy.

Okay. That's the article I was using to build this one...

[Muncie]

That is very good looking engine detailing.

NTA is the engine model, 370 is the nominal horsepower, 855 (cubic inches) is the engine displacement (14 liters)

Cummins built these engines for decades for several applications - HD truck, marine, industrial equipment, generators... each will have their own specification with unique configuration and equipment.  Same for the manufacturers that installed the engines.

[DRIPTROIT 71]

If you will notice the dual fuel filter set up is just mounted to a plate that could be  mounted most anywhere, sometimes even the frame. Most of the old cabover KWs that I find reference pictures for don’t have any filters in this area, so most likely they were mounted low enough to be hidden by the frame.

You could always do like I did on the last two of these that I built and put a Detroit in it.😀

[Goodwrench3]

On 12/28/2021 at 8:16 PM, DRIPTROIT 71 said:

If you will notice the dual fuel filter set up is just mounted to a plate that could be  mounted most anywhere, sometimes even the frame. Most of the old cabover KWs that I find reference pictures for don’t have any filters in this area, so most likely they were mounted low enough to be hidden by the frame.

You could always do like I did on the last two of these that I built and put a Detroit in it.😀

Thanks for the info.

Yeah I haven't had much luck in finding pictures of 1:1 KW cabovers where you could see the left side of the engine clearly.

From everything I've been told, the one place the fuel filters would NOT be mounted is on the side of the aftercooler (as the AMT instructions show).

Thanks

 

[Goodwrench3]

Here is a picture of a KW cabover that I took at the ATHS show in Des Moines IA a few years ago.  Yeah -- that area of the block below the aftercooler is pretty busy.  You can see in this photo the fuel filters aren't there -- in this particular case.