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It supposedly wasn't a known issue by CAT. I covered it in my write up a few years back in more detail but basically it happened fairly often but CAT denied it was happening until they gave in and acknowledged it was how the ECMs are flashed and changed how they did it. Now if an ECM battery...

The part number 206-2700-02 is correct and try to stay with it unless CAT can verify they've superseded it and the newer unit will work. Some of the issues the CAT tech told me were that newer ECMs were designed with emission in mind and getting a newer unit could cause the computer to generate...

Make sure it's the exact same model stamped on your ECM. If it differs by even a few numbers it could cause a ton of head aches from constant check engine lights, derates, etc etc..

Here's photos of that hybrid unit. I was told it has a Cat (3116/3126) that powered a generator which power 2 electric motors. It looks like it has a T-1138 (M939 series) transfer case in it as well. These are not my photos and some are hard to understand due to perspective but it's neat. Major...

Thank you. Any photos of this Tanker to 1086 conversion? I'm not surprised they did that as tehy were constantly behind on their delivery quotas. I've had a few people reach out to me on facebook about other FMTV oddballs but they've all been later "proof of concepts" with hybrid drives and one...

I think so too. They were literally sight unseen purchases. No it's just the air boot to the turbo. As for the suspension I see that there are springs very similar to it.

The M1088 is worth the save as well and is in a little better condition than the M1084 rust wise. Both trucks could be combined to make a solid truck or even use modern M series parts to get it running. With 150 original miles on it I can't see this truck having been chasing any fires off road...

The M1088 still has the dealer plate from 1985 and I'm digging to see if that was registered to S&S out of curiosity. Any work done in or to the bed I've assumed to not take to heart as it was modified for fire fight use. It's a simple design but effective. Who ever did the modifications...

The M1088's history is still be researched. It is indeed a M1088 tractor but was converted to a cargo for VFD use at some point. I have some sources saying it was redone before S&S donated it to VFD as a promotion but I'm still looking for documentation. This M1088 is closer to a "A0" truck in...

The truck included 2 remote controls (one for a M1089) and a cable as well. The cab cover has a built in hatch. There is a red toggle switch on the left side of the steering column assumed to be a remove battery disconnect like later A1 trucks but has yet to be proven. Overall the truck isn’t...

The alternator is an unknown Niehoff 14v/28v S/N 00052 with no NSN or other identifying info on it. It too was made in 1992 supporting the production date of the truck itself. The one large plug on the unit goes down and feeds directly into the box beside the battery tray. The electricals in the...

A unique feature is the addition of mudguards attached to the cab support assembly. It melds well with the black fenders and would explain why they went with that lipped style but begs the question of why they didn't make it to production. Cost cutting? Possible damage with the air ride cab? Who...

Now for the fun part..differences. S&S went with a spring cab suspension in place of the air ride. In fact there is no air assist system at all for the cab, suspension, spare tire assembly, etc. Each hydraulically driven system (excluding crane) is on a simple flow system that is isolated from...

**This thread may continue to develop as facts and documentation are discovered.** I had the fortune of unknowingly recovering 2 prototype MTVs this past week from a location not too far from the old Stewart & Stevenson plant in Sealy, Texas. I'm doing the due diligence of documenting the...

I've had 2 of those units (clones) and running ET 2019A and they never could connect. I had a DPA3 adapter from the military that worked and a DPA4+ that also worked with the software.

It's always been 12 months on these as far as I've seen. I have a few going on 5 years strong but I assume it's dependent on the truck they're in.

It sounds like you have multiple issues going on with the most serious being unable to connect to the ECM. I have a thread on this "crank, no start" issue and it was the ECM that failed internally due to faulty battery and wiped its memory. If your computer can't talk to the ECM do the...

24F from Wally-World. They're cheap, durable, and readily available if you're on the road and need one.

You linked something else but yes everything is from the APO there. EUC's still required. Everything is "OFF ROAD USE ONLY. NO EXCEPTIONS." Nothing too special since you can't drive it on the road imho.

That's quite a bit of white smoke, what does it smell like? It could be a stuck injector, low compression on one or more cylinders, or head/head gasket issues. I'd start with the basics and check coolant and oil for signs of contamination and track from there. You can run the engine with the...