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You can hear the blown gaskets. It makes a loud ticking sound where the exhaust pulses are escaping at the flange. The biggest sign is a heavy amount of soot in the engine comapartment. Exhaust escaping around the gaskets will coat everything in black!

Also, Cummins specs 35 ft-lb. on the manifold bolts. They don't need to be gorilla tight! Tighten from the center two cylinders outwards progressively in a box pattern. Use plenty of anti-seize on the threads, and they shouldn't give you too much trouble in the future.

Hey everyone. Been a while since I have posted. I wanted to share this with anyone having similar problems. Long post with information. Due to level of grease and contamination, unfortunately no pictures of the process. Picture of the truck is all I have for now (4th of July). I have a...

FWIW, Almost three years on this pump, and I am still trucking right along (no pun intended). I have put almost 5K miles on it with no issues. Still fires on the first hit of the starter, hot or cold.

I just used a small piece of thick rubber that I cut a plug from using abhole saw. Cracked the air line going to the problem wheel, and put the plug between the fittings. Seems to work just fine. The plug needs to be 1" in diameter.

I'd start with getting it up to temp (240 on the gauge), then aim a digital temp gun at the thermostat housing.

Just as an update, I blocked off the line going to the wheel with the bad hub seal. The system pressurized all five remaining wheels to 50 psi in a matter of minutes! All appears back to normal I may re-install the computerized controller to see if that fixed the 5-light blink, too.

Pictures...

Ok, the squeal is undoubtedly a hub seal. I am going to try to block off the one wheel and see if that will get the other 5 wheels going.

Ok 5-tonners... 1991 M923A2. Factory CTIS was giving the 5-light blink, so I did the full manual controller conversion: https://www.steelsoldiers.com/showthread.php?161829-Manual-CTIS-control-how-to Once I got it installed, I ran air through it. The dump valves opened and tires were...

Just a quick update with some more recent photos. I am doing a "quasi" mil-themed paint scheme. The truck is going to be modeled after one in that would be found in the Black Mesa Research Facility from the video game Half-Life. I am taking some creative liberties, but it will be Black Mesa...

Did some electrical work. Wired in a 24-12v DC converter, good for 20 amps. Should handle the cell phone charger and a couple odds & ends no problem. Lights in the toolbox... The wires will get some split loom. I plan to add lights in the other toolbox as well. Also added some reverse lights...

Getting some paint on. I have a 24v to 12v converter to install when I find the time. Also, a short in the turn signal somewhere. Fried two civvy flashers so far. :evil:

Added clearance lights front and back.

When I brought my 923A2 home recently, it ran like a top. I got the thing parked, and it promptly died. I thought I ran it out of fuel, so I filled it using cans and reprimed the system. When I was priming, I noticed the fuel primer had some fuel weeping around the priming button. I decided...

Years ago, I bought a M35A2. It was rough around the edges, but it was mine, and it was a strong runner with air assist steering. I sold it to a Vietnam veteran here local to me when I grew bored with it and wanted to do something else for a while. I regretted it since watching my truck drive...

After a 5-year hiatus, I finally got back in a truck I have always wanted: an M923A2! I bought it from an individual outside of Atlanta, and after a once over, drove it 350 miles home with my buddy running chase car with my tools. We never had to fix the first thing! Of course, I got it home...

As one final update, she has gone on to a new owner.:(

A few vids:

Pulling a buddy's M105A2. That thing is clean. Titled as a '97 model; it still had the original packing slip pasted to the side of the trailer when he picked it up. The lug nuts were still painted and the tires had the little nipples on them!