Anyone ever work on brakes like these?
- Thread starter indestro
- Start date
tonydanzah
Well-known member
wtf is that on?
diesel research
Well-known member
Let's see. Appears to be a rear axle, single at that. Appears to have CTIS.
Is it an mrap?
diesel research
Well-known member
yah ,its a stewart stevenson 2.5 ton military truck , yes ctis ,hate it
Oh, coulda said LMTV.
I didn't remember dual wedge brakes, but anything is possible.
First thought lmtv but didn't see a 2nd rear axle so figured mrap or lmtv.
didnt say LMTV because i dont know whose military here but those are single and the 5 ton version are called FMTV or simply MTV with the LMTV being the light version. yes wedge brakes and CTIS too many circuit breakers, too many problems
diesel research
Well-known member
The deuce braking system was "better". Air over hydraulic, or double trouble.
Trust me on this, they are less problematic than other commercial trucks used in much less strenuous situations. Much more simplified as well. Granted, most have a simpler s-cam braking system, but atleast the 3116/3126 cats only "emissions equipment" consists basically of a turbocharger. Being a cab over makes things pretty damn gravy too. Especially if a later model with secondary ignition switch in the fenderwell.
Trust me on this, they are less problematic than other commercial trucks used in much less strenuous situations. Much more simplified as well. Granted, most have a simpler s-cam braking system, but atleast the 3116/3126 cats only "emissions equipment" consists basically of a turbocharger. Being a cab over makes things pretty damn gravy too. Especially if a later model with secondary ignition switch in the fenderwell.
That braking system looks like it was designed by a bunch of children with a box of crayons.
Looks highly field serviceable too!
Same as any other Stewart-Stevenson product, you should see the snowblower that we have at work that they designed...
I spent three and a half years working on a government contract where we worked on LMTV/FMTV's as well as HEMTT/PLS, HMMWV, 2k-80k generators, and a fair amount of other assorted military hardware.
justanengineer
Well-known member
Sounds like you need to work on a few civilian rigs, those trucks are ridiculously simple. Thanks to resettable circuit breakers and an open board PCM that has LEDs on every circuit telling you what is wrong, troubleshooting and electric repair is simple. The brakes are a fairly simple air system, and if washed regularly last a lifetime. Cat engine and Allison trans are virtually indestructible and other than oil and filters there is basically no work needed on those. My last unit had over 300 of those in my former shop alone, and they were the least problematic of our vehicles. Personally I think thats one of the best trucks the military ever bought.
The great part about being a mechanic in the military is that regardless of the rank of the vehicle's driver, you have the ultimate authority when it comes to that truck, meaning cleanliness and getting the work done before it needs it. If youre having issues with those, its usually lack of maintenance or operator abuse, for which there is no excuse.
The great part about being a mechanic in the military is that regardless of the rank of the vehicle's driver, you have the ultimate authority when it comes to that truck, meaning cleanliness and getting the work done before it needs it. If youre having issues with those, its usually lack of maintenance or operator abuse, for which there is no excuse.
wiz56
Banned
What kind of old machine tools do you collect or are you looking for?
justanengineer
Well-known member
wiz - I recently downsized my various collections pretty significantly because I moved from northern NY to the midwest, and am renting a house until I buy sometime next year, but still have a few toys. Currently for machine tools, back in NY Ive only got a Clausing 6300 series lathe (most accurate lathe Ive ever owned), and an Atlas shaper that Im about 90% done restoring. Ive also still got an early Buffalo camelback drill and a 36"? throat Powermatic wood bandsaw that I originally purchased to convert to cut metal, but since then owned and sold another metal machine, so I may or may not keep that (just havent had any offers on it yet). I had several other larger machines, but simply decided not to drag them cross country with me and Im personally glad I didnt - old iron can be had for less money here. A few weeks ago, I bought my first machine since the move here - a 1952 round ram J-head Bridgeport for $250, which I am slowly restoring. Being that Im working out of only a 2 car garage now, thats probably all the machine Im going to have here until I buy my own place. Ive got a good collection of regular garage/other tools as well back in NY, but until I get more space here, thats where they will remain. Eventually however, I will have some of the more large/obscure machine tools - gotta love planers, slotters, and boring mills.
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wiz56
Banned
Even if it is an old round ram J-head you stole it....................
Yes I have .... wedge brakes with spring chambers. Not very common these days. RTS buses have a bigger version but rely on a separate parking brake so they don't have the piggy back chambers.
Here is a slide from a class that I developed back when we still had some around....
Here is a slide from a class that I developed back when we still had some around....