Congrats on the 5 ton and welcome to the group! If you are allowed to drive it off there are a few things to look at are going to be the following. The truck may or may not start, and they may or may not give you a jump, keep that in mind! Lets say the truck will start, first BEFORE you do anything check to make sure its got oil in the engine at least enough to get it off post, if the oil is OK then get the truck running. After the engine starts and before it gets warm check the overflow tank for coolant, be prepared to add some, I would have at least a few gallons ready. After it starts keep an eye on the oil pressure, just make sure it has some, you should see good oil pressure within 30 seconds of the engine running, if not shut it down right away and find out why there is not pressure. If you have oil pressure then watch your air pressure, at around 50 PSI your brakes will release and it should build right up to 120 PSI, actuate the brakes while the truck is sitting there you should hear air dumping when you release the brakes. If that all checks out then move the truck a little and try the brakes, does the truck stop good? If so good, by now your should be seeing the engine temp starting to rise and your should be getting some voltage from the alternator, it should indicate in the green on the gauge. OK all this is good right, now here is another important part, have a CLOSE BY LOCATION to take the truck to when you get it off post to give it complete inspection prior to driving it any distance. By close I mean try to keep it under 5 miles, while your driving there keep an eye on all the gauges especially temp oil pressure and air pressure they should all be stabilized within a couple miles, if not you need to find out WHY. When your get the truck to your inspection location check ALL fluids and lubricants on the truck, yes this means transfer case, differentials, transmission, engine for both oil and coolant, power steering pump everything. Look for leaks of any form, if the truck has been sitting for a while these small leaks can turn ugly very fast. Make sure that you bring a bucket load of appropriate tools for this truck, make sure your at least up to date on most of the TMs. BE smart about this, they are great trucks but remember they are big and heavy they dont stop like any car made. Make sure that you have insurance on the truck while its being transported. Good luck and remember you represent ALL of us when your driving this unit!
KK