What is this part on my m923a2

[6x6junkie]

Passenger-side front of air tank has wire and is threaded directly into tank cannot find part number on unit at all been through both of the manuals cannot find a part number to locate this unit any info would be greatly appreciated Have also looked on different trucks in the area six of them and they have a different set up mine does not have a winch or anything crazy just a standard cargo truck

 

[74M35A2]

Flux capacitor.

 

[gimpyrobb]

Looks like an air pressure sensor to me.

 

[Scar59]

DO NOT cut the red wire.....

 

[therooster2001]

My god, I searched for 45 min. I found it in the TM's, but it doesn't label it. My truck is 20 miles away, what's the other end connect to?

And what's the color in those Picts? It looks like it had an oil bath..

 

[juanprado]

looks like an automatic drain valve for moisture with the heated element but I was not aware that the A2's were equipped with one...?

 

[6x6junkie]

the thing that kills me is it is not in the parts book to get the part # to get a new one its letting air buypass it and not letting it build if I shut the valve it builds

 

[MidnightDuramax]

I would say it looks servicable. Remove the four allen head screws and clean it. Probably some debri stuck in it and won't let it seal off.

 

[juanprado]

the thing that kills me is it is not in the parts book to get the part # to get a new one its letting air buypass it and not letting it build if I shut the valve it builds

I was very curious myself and spent time in the newer series 3 part tm of parts and the 5 part -23 service/repair. I could not find it at all. All I found was in the newer -10 the same diagram the rooster2001 posted.

 

[Shirehorse]

http://www.eriksmilitarysurplus.com/airreaumoejv3.html

Looks pretty similar.

 

[tbar123]

To me it looks like a pressure regulator! What does the air line feed? Something also unusual? Or specific for certain trucks!

 

[Scar59]

looks like an automatic drain valve for moisture with the heated element but I was not aware that the A2's were equipped with one...?

Juan is spot on, might have to order one of those.

 

[tbar123]

I just looked at the ABS field update pdf and something in there seems like it might be a possibility!

 

[juanprado]

That sure looks like it.

The P2P software does not show it in the electrical diagram nor is it in the pneumatic.

It would be neat to add in.

6x6junkie; what is the routing of those air lines? Is one back to the drain tree? Other one? Could you post more pics?

Interesting that one hose looks like stratoflex fiber covered not the traditional hard nylon air brake tubing?

Pulling power and ground is easy. I would say you could Y off the heater in the drier as the closest.

 

[MyothersanM1]

the thing that kills me is it is not in the parts book to get the part # to get a new one its letting air buypass it and not letting it build if I shut the valve it builds

If you need one, I've got one with 1/4"NPT inlet. Installed briefly on my M818, but near new.

http://ddinstruments.com/expello-drain-valves/

 

[therooster2001]

So I checked mine out, nothing but a connector on the bottom of the tank, to the drain valves by the stairs. Maybe using the updated TM doesn't always help.

 

[MyothersanM1]

The line leading to the valve is the actuation line from the governor unloading port.