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How is the inner gear retained on the spindle? The inner gear is normally held in place by the spider gears and held stationary by the splines on the spindle and it prevents the spindle nut from backing off by engaging the roll pins protruding from the face of the nut.

What does the data plate on your dash indicate? Do you have a serial number? Post pictures of the truck and any data plates you can find. We can tell a lot about it from how it's equipped. FMTV's including the M1078 were still in the prototype stages in 1989. Stewart and Stevenson wasn't even...

Nothing wrong with being curious. Having welded plenty of diffs as a young man with more 7018 and electricity than money for lockers I can tell you it will work till the welds break (throw some bolts or chunks of ready rod between the gear teeth and weld them in) - or maybe they won't break -...

That still wouldn't do it - the inner gear is free-floating on the splines. You can't weld it since that would make hub service impossible. And if you shave off the spiders where they contact the inner gear/nut retainer then nothing holds the inner gear into the nut. You need a way to delete the...

I will go through my manuals again and see if there is anything leaping out at me that's relevant but I am not locating a Caiman TM in my collection. I would suggest that you start with a few phone calls to either the DLA directly, or to your Ohio LESO state coordinators. Someone at some level...

Hhhhmmm - not experiencing that as a supporting member.

Exactly. Waste of time to even consider wrecking a bunch of parts by welding all over othem when a tested product is available to do it the right way. The hubs pay for themselves in ~3500 miles just in fuel savings. If you can't afford to do it the right way then these aren't the trucks for you...

I updated it with specs.

M1089A1P2 LTAS Wrecker weighs 40,050 lbs and has a towed load rating of 55,000 lbs. For a combined weight of 95,050 lbs. Engine is the 330/860 C7 and transmission is the Allison 3700SP. My M1079A1R Van weighs about 21,000 lbs by it's fat self. An unloaded M1082 weights about 8,500 lbs......

Well - the cab AC in the Caiman is the same as any other FMTV. If it's not blowing cold then it's just a standard AC system driven by a Sanden compressor off the CAT C7 engine. It has high pressure and low pressure switches to prevent the compressor from engaging if the system is too low on R134...

General convention would be to refer to the one's at the axle as the lower bushing, the one's at the bar as the upper bushing, and the one's at the body as the bracket bushing.

Those tapered ones are easy, I'm talking about the upper BAR bushings. These guys: https://www.ebay.ca/itm/283850855390

CTIS gets it speed signal from the ECM if you have a 3126b or C7 engine. You will still get HWY mode overspeed unless you reprogram the CTIS controller. ..... Not sure where CTIS gets its VSS from on an A0 but it is easy enough to reprogram the CTIS controller for the new PPM (pulse per mile)...

So wait - it overheated AND you lost "power" - what does that mean exactly? Full story please.

Your transmission is the Allison MD3070. The 3700SP wasn't introduced into the FMTV till about 2005 or so and always has the WTEC IV controller. All of the transmissions fall under several service bulletins about the C6 clutch thrust bearing failing and bearing parts ending up various places...

Military vehicles in general aren't really the best hobby if you haven't got money. Pick a cheaper hobby or maybe learning a marketable skill FIRST so you can have money for hobbies..... but IDK maybe I'm doing it all backwards. 🤷‍♂️ The Motorpool guys I've talked to complement the...

You're about 30 years off on your timeline. Obama took office in 2009. The FMTV prototype contract was awarded to S&S and Teledyne in 1988 for 15 prototypes each. S&S got the manufacturing contract in 1991 and the first FMTV's were fielded to the Army in 1996. If any "administration" was...

The military was definitely not interested in rolling coal. They went through that with previous generations and visible diesel exhaust gives away your position. But really the entire point of the FMTV concept in the late 80's and early 90's was to replace the M35, 800 series, and 900 series of...

They are likely nothing special. The military doesn't care about weight at that scale (for general use - special forces are a different subject) or fuel economy in general so I'm quite sure they were simply made of normal steel and just made ultra thick and heavy to meet the design specs. You...

The engine has not been swapped. CAT just sold Stewart and Stevenson an off-the-shelf truck engine. It met certain EPA emissions and had stickers to such effect because at the time it met the military requirements AND the EPA requirements without having anything the military objected to. 30...