Service Your Air Dryer

[allie]

Gonna do it! Have one more issue I wish I could fix. Engine doesn’t shut Down with switches I have to pull the emergency shutoff then open hood and reset it so I can start it
Thank you.

 

[doghead]

See if the thumbwheel on the shut off solenoid has been screwed, to manually override the solenoid.

 

[allie]

Ok so I want it backed out ?

 

[porkysplace]

Ok so I want it backed out ?

[h=1]Bypass m923 fuel pump?[/h]TM9-2320-272-10.pdf
TM9-2320-272-10 Operations manual for the M939 series trucks. Sept 2004

 

[allie]

I’ll get to all this this weekend. I Thank you for your help!

 

[allie]

Ok thumb screw was all the way In. I backed it off all the way and truck wouldn’t start , wasn’t getting fuel. I then screwed it back in just not all the way and it now runs , shuts off and starts with the switches. Hope that screw doesn’t back out on its own from vibration.

The canister wasn’t leaking it’s leaking from above that and in an area I can’t figure out how to get to. I took a video and some pictures of it leaking. Gonna try to post them.

 

[porkysplace]

Ok thumb screw was all the way In. I backed it off all the way and truck wouldn’t start , wasn’t getting fuel. I then screwed it back in just not all the way and it now runs , shuts off and starts with the switches. Hope that screw doesn’t back out on its own from vibration.

The canister wasn’t leaking it’s leaking from above that and in an area I can’t figure out how to get to. I took a video and some pictures of it leaking. Gonna try to post them.

If it doesn't run with it all the way out you still have a issue that needs to be addressed . it sounds like the fuel solenoid is going bad .

https://www.eriksmilitarysurplus.com/fucova24vofo.html

 

[allie]

I need to find a parts manual for this engine. 6 cylinder Cummins 250

 

[allie]

awesome! thank you

 

[porkysplace]

I need to find a parts manual for this engine. 6 cylinder Cummins 250

http://www.bunkerofdoom.com/travel/s.../tm/nhc250.pdf

 

[allie]

you guys are a great help! thank you

 

[simp5782]

https://www.fleetequipmentmag.com/tech-tip-service-interval-air-dryer-cartridges-bendix/