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I have a M923A1 is it a 1986, NHC250. When I got it a couple months ago, the first thing I did was drain the fuel tank, reached in and dried it as much as possible and let it set open for the day, then added lucas fuel additive for diesels and put in 25 gallons of fuel. I changed all the...

Does anyone know about turning up the fuel and replacing injectors on a M923. NHC250 Would just like to get a little extra power. M923 is pretty slow taking off, and mine will run 62mph show the gauge, but a little more top end also would be nice.

I was driving my M923A1 about 2 miles from home, going about 50mph when I heard a loud PSST for about 5 seconds looked at my air gauge and it dropped to zero and the horn started blaring. Then I looked at my secondary tank gauge and it was dropping fast. Hit the brake pedal to see how the were...

does anyone know what rims these are. they are on my M923A1. I need to get another and don't know what they are. Thanks guys

Just got my M923A1 Titled, Registered and plated in Michigan. Needless to say they had no clue. The first person told me to come back when I get the title to the truck. I asked for a supervisor, but she had to get out their law book and read. When we got finished she had it registered as a...

I have a way to get a M923 that has just been completely overhauled by the military but I really like the super singles on the A1 like my other truck. Are there any differences other between the M923 and M923A1 besides the super singles, and how are the front differentials different to hold...

Can anyone send me the specks and exact drawing of the 5 ton tow bar. The one that sells for about $650. I have been told you cant make one for as cheap or as good. My race team builds nascar chassis for me to specks and I have a diving friend that owns a steel shop. I might be wrong but I...

I think the mods should tell everyone do not use help in your title unless you are broke down on the side of the road. Help is for an emergency's and someones oil pressure gauge not working is not an emergency. I scroll through new post's when I get on and when I see help I stop their first...

Looking for a current or former military mechanic that worked on the M923A1's that might be able to help me figure out this starter switch not starting the truck problem. I have read the TM's over and over. even got a blow up of the electrical system from the TM and I can't figure it out. I am...

Has anyone checked into if the red river army depot will work on trucks that civilians bought. Like doing front end work or complete paint jobs with camo patters. or electrical wiring. Just wondering if they just did military contract work.

Still can't get truck to start with switch. Have taken both switches out of my M923A1 and tested them then but when I turn the switch to run I get nothing. I can turn the switches on and it starts right away from jumping the solenoid, but I get no power at all to wire 74 going to the solenoid...

I have read that on a M923A1 the cummins engine will have about 15-20 lbs oil presure at idle. my guage shows 85 lbs all the time it's running, whether at idle or at 2000 RPM. Any ideas what this could be?

I ran across this add, but I don't understand what promulgated means and End use Army security services, tire specs are restricted. This is the exact print. 2 ea, Federal Specifications Promulated by General Services Administration, Vehicular Pneumatic Tire, 100 lbs per sq in, End Use: Army...

Attached is a picture of under my dash on my M923A1. I have put in the turn signal flasher and hooked it up. Also the light switch has been installed and plugs installed. But if you look right above the steering column you can see a black square area, it has a nut at the left end, and its...

Can anyone tell me where the wiring diagram is for the M923, not getting power from switch to starter solenoid. Have looked through TM's but have not found a diagram. When I turn the switch to start not getting power. I am getting power from the switch.

I started installing the alternator I have had such a time with , getting the right pully. Put the 2 bottom bolts in rolled it up into place and it fit perfect. Started to screw in the top bolt that holds tension, and did not even have it snug yet where it would hold it self in place and the top...

I have gotton 2 different alt pulleys from guys and both were wrong. the first I found was from a 465 multifuel. but the next should have been right, but no #'s on it. It went on good, but when I put the alt on the pulley was 3/4" behind the main pulley's it would have thrown then off. So I rook...

On the back of the fuel pump on a M923A1 there is a square box about 2"x2". It has 2 wires connected to a post by the bottom. What is the square box and where do those wires go. In TM9-2329-272-24-1 The TM says it is a fuel pump metering. Does anyone know what that is, what does it do? and...

Thank you for all the support and info on my need knowledge for the M923A1. Yesterday after hours of playtime outside. I took switches out, checked the neutral switch, checked voltage every where. (funny) I asked a guy at a parts house if he had a 24 volt light tester, He asked how many times I...

The otherday we put 2 week batteries in the truck/ we only saw the main power and ground not the small wires that are on each of them. we hooked the main and ground up and turned the power and start switches, nothing, no low air buzzer nothing. So we went to the starter and jumped it at the...