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Sounds like a dumb design doesn't it? The Bendix unit is a "fail safe" design. Since the clutch is spring loaded to engage, loss of air pressure for any reason results in the fan being on. If air is required to engage the fan, loss of air pressure results in the fan being off which would...

If you replace any fittings, make sure they are DOT fittings. They are different than standard brass fittings. The nuts are longer to support the tube for vibration and the nut threads are different so that you can't interchange with standard brass fittings. Most likely have to go to a heavy...

Thanks. It locks up very quickly. Didn't start it up for 6 months and it locked up again even though we're in California with dry air so there should be minimal rust. Only good thing is it didn't cost anything to fix. Just be careful not to ruin the o-rings or damage the bearings.

I don't know the slightest thing about Cats, but my Cummins M916A1 had the same problem. I assume all the trucks use the same air clutch made by Bendix. How it works is there is a spring loaded cone clutch that presses against the inside of the fan pulley locking the fan hub to the fan pulley...

It still could be bad cables or dirty connections. A motor draws maximum amps on startup and draws less as the rpm goes up. The more amps, the more voltage drop at the motor so the slower it goes. As the motor starts to spin, the current drops so the voltage at the motor increases and the...

Can't run it in calif without re-engining it. Needs to be 2010 or later emissions engine along with cat converter. Go to carb(cal air resources board) website

Best to start at the beginning of the thread that my link points to. The link was my explanation of how the 5 ton transfer case works. What you are experiencing is the reverse sprag being engaged instead of the forward sprag while moving forward. The axles are winding up so tightly that they...

http://www.steelsoldiers.com/showthread.php?1093-Sprag-substitutes&p=843655&highlight=#post843655

Sounds like the sprags in the transfer case to me. There are air valves on the trans shifter that operate a 2 way air cylinder on the transfer case. The cylinder has to be fully in one position or the other to engage the forward or reverse sprag. When the trans is in neutral or forward gear...

Sounds like the best solution is a 3 axle straight ramp truck or a 3 axle roll back

No offense taken. As you know, California is in its own little universe and I didn't want OP to get into something without knowing the ins and outs. I had to learn the hard way.

Not trying to discourage anyone. OP asked for help and got good advise from everyone here who has experience with hauling a similar vehicle. Armor is not for the faint of heart and you'd better have a plan going in or things can get ugly quickly. OP is doing the right thing thinking it thru...

In regards to safety with the vehicle being chained down properly to the deck if its a straight truck, the issue is not the chains. The issue is that the deck/body is held onto the frame by a half dozen u-bolts pinching some wood slats between the body and frame and these will slide or give way...

The M818 in my avatar didn't have the power to pull the trailer. Had to switch to an M915A1. Like other guys say, it's a really nice tractor with tons of power. If you put a bed on a truck, you can get by with a Class B license. I thought about it but decided I didn't want 15,000# of...

Make sure you look for a truck/tractor that is at least 25 years old so you can get historical plates. If not, you will have to pay weight fees on top of registration. This would be more than $1k/yr for a loaded tractor trailer rig. Worst of all, if you registered it commercial, you would...

M915A1 tractor and M871 trailer. Calif rust free with low miles. $10K. Can be seen at TOWER PARK 4/18-4/20/13

To be safe, you need something like this along with a Class A license

Deuce is too underpowered to haul a halftrack. I tried an M818 and it was too underpowered also. Couldn't make it up to full speed on a level highway. If turned up IP and/or added turbo would probablly do ok. I ended up finally with an M915A1. Although the M818 looks better, the M915A1 is the...

Sorry for my terminology. You are correct about a restriction on your license as opposed to an endorsement. End result is the same-you must take a written and a driving test for your license if you are going to have air brakes.

In cal, anything over 6,000# with 3 axles needs a class B. There is no distinction between commercial and private use. Anything other than RVs that need a class B or higher is called a commercial vehicle regardless of it use. If you register it as a commercial vehicle, fees are $1-2K per...