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Emergency lmtv brake help

M

MRAP DREAM GIRL

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GeneralDisorder said:
There's a LOT of water, and enough oil to make milkshake......

I'm not (yet) an LMTV expert, but one thing I DO KNOW is compressor and compressed air systems. I spent several years working for Roger's Machinery both assembling compressors from parts for the rental fleet and rebuilding recip (piston) air compressors. To this day I'm a compressor snob - my personal garage unit being a Quincy QR-325 on an 80 gallon vertical tank. Completely custom build.... would probably run about $6,000 retail to recreate it.

The compressor could probably use new rings. How many miles are on this unit? Clearly someone swapped the drier..... must have been reasons for that.

That drier cartridge is SIGNIFICANTLY nastier than mine was (no milkshake in mine - just SOAKED in water) - and mine destroyed the compressor. It caused backpressure and it overheated the top end of the compressor - the springs in the disc valves lost their temper and broke into multiple pieces. This led to the compressor building air slowly and really only at high engine rpm like cruising at 50 mph..... and making a lot more heat than it should - one of the discs split into multiple pieces, a chunk of which slipped into the cylinder and punched a hole through a piston. This was THE END for the compressor which not only didn't make any air at that point, if you revved the engine enough it was pushing air through the piston and into the engine crankcase and it pushed a couple quarts of oil out of the engine breather.

My truck has 5800 miles on it. The compressor was not worn out. It was damaged from that drier. I'm concerned because that's a ton of water and also there's oil mixed in with it.

I would recommend a top-end rebuild of the compressor. At the very least get a head gasket for it and pull the head for a complete disc-valve inspection.

Haldex has a part number listing for a reman cylinder head assembly. Might not be a bad idea. Easy and quick.

If you want to pull the compressor for a full rebuild PLEASE send it to the good people at Brake Systems Inc. They are local to me and went above and beyond to find me a core (in Texas), ship it in, and they had it rebuild the same day it arrived at their shop. And it works flawlessly. Can't say enough good things about these guys. Old fashioned customer service:

Brake Systems Inc. - Manufacturers of Blue Ox Exhaust Brakes

BRAKE SYSTEMS INC. has 40 years of experience Manufacturing, Remanufacturing and Distributing quality brake components. We are ISO 9001:2008 certified. We specialize in Brake and Throttle Components, Electronic Throttle Controls, Exhaust Brakes, Blue Ox Exhaust Brakes, Air Shifters, Air...
www.brakesystemsinc.com

Rick
Click to expand...
Ok Rick, the compressor is building air quick and solid. We're not going to drive the truck again until the air dryer is cleaned up like brand new and the new cartridge is installed. Soldier A wants to pull it apart after a week or two and check it again
 
M

MRAP DREAM GIRL

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MRAP DREAM GIRL said:
Ok Rick, the compressor is building air quick and solid. We're not going to drive the truck again until the air dryer is cleaned up like brand new and the new cartridge is installed. Soldier A wants to pull it apart after a week or two and check it again
Click to expand...
Looks like we may sell Matilda my bobbed deuce and maybe even Tiffany the dragon wagon and become an lmtv only family
 
G

GeneralDisorder

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MRAP DREAM GIRL said:
Looks like we may sell Matilda my bobbed deuce and maybe even Tiffany the dragon wagon and become an lmtv only family
Click to expand...
...... I kinda want a bobbed deuce..... let me know if you decide to do that. There were no LMTV's in my unit when I served and I was attached to motorpool where I worked on a lot of M35's, HMMWV's and 800/900 series trucks. I'm in Oregon so not far from you.

The LMTV is a sweet platform. No question. They will pry my M1079 A1R from my cold dead hands...... but I do have a soft spot for the M35. :rolleyes:

Rick
 
M

MRAP DREAM GIRL

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GeneralDisorder said:
...... I kinda want a bobbed deuce..... let me know if you decide to do that. There were no LMTV's in my unit when I served and I was attached to motorpool where I worked on a lot of M35's, HMMWV's and 800/900 series trucks. I'm in Oregon so not far from you.

The LMTV is a sweet platform. No question. They will pry my M1079 A1R from my cold dead hands...... but I do have a soft spot for the M35. :rolleyes:

Rick
Click to expand...
:ROFLMAO::ROFLMAO::ROFLMAO:
 
R

Ronmar

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Port angeles wa
GeneralDisorder said:
There's a LOT of water, and enough oil to make milkshake......

I'm not (yet) an LMTV expert, but one thing I DO KNOW is compressor and compressed air systems. I spent several years working for Roger's Machinery both assembling compressors from parts for the rental fleet and rebuilding recip (piston) air compressors. To this day I'm a compressor snob - my personal garage unit being a Quincy QR-325 on an 80 gallon vertical tank. Completely custom build.... would probably run about $6,000 retail to recreate it.

The compressor could probably use new rings. How many miles are on this unit? Clearly someone swapped the drier..... must have been reasons for that.

That drier cartridge is SIGNIFICANTLY nastier than mine was (no milkshake in mine - just SOAKED in water) - and mine destroyed the compressor. It caused backpressure and it overheated the top end of the compressor - the springs in the disc valves lost their temper and broke into multiple pieces. This led to the compressor building air slowly and really only at high engine rpm like cruising at 50 mph..... and making a lot more heat than it should - one of the discs split into multiple pieces, a chunk of which slipped into the cylinder and punched a hole through a piston. This was THE END for the compressor which not only didn't make any air at that point, if you revved the engine enough it was pushing air through the piston and into the engine crankcase and it pushed a couple quarts of oil out of the engine breather.

View attachment 855528
View attachment 855529

My truck has 5800 miles on it. The compressor was not worn out. It was damaged from that drier. I'm concerned because that's a ton of water and also there's oil mixed in with it.

I would recommend a top-end rebuild of the compressor. At the very least get a head gasket for it and pull the head for a complete disc-valve inspection.

Haldex has a part number listing for a reman cylinder head assembly. Might not be a bad idea. Easy and quick.

If you want to pull the compressor for a full rebuild PLEASE send it to the good people at Brake Systems Inc. They are local to me and went above and beyond to find me a core (in Texas), ship it in, and they had it rebuilt the same day it arrived at their shop. And it works flawlessly. Can't say enough good things about these guys. Old fashioned customer service:

Brake Systems Inc. - Manufacturers of Blue Ox Exhaust Brakes

BRAKE SYSTEMS INC. has 40 years of experience Manufacturing, Remanufacturing and Distributing quality brake components. We are ISO 9001:2008 certified. We specialize in Brake and Throttle Components, Electronic Throttle Controls, Exhaust Brakes, Blue Ox Exhaust Brakes, Air Shifters, Air...
www.brakesystemsinc.com

Rick
Click to expand...
Nice cascade failure!

The compressors will always pass some oil. Finding some in the dryer doesn’t surprise much, finding a lot even less so if it hadn’t been chnged in a while and was perhaps not purging properly… that will indeed mess with the flow though…
 
Last edited:
G

GeneralDisorder

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No clue on that one..... You might need to find a forum dealing with trucks that commonly use the AD-9 dryer (from manufacture I mean). Unfortunately there are as many dryer models out there as there are stars in the sky it seems and I don't know of any military applications so not likely to get an answer from this forum I don't think. But maybe!

Rick
 
M

MRAP DREAM GIRL

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After many hours on the web and phone yesterday Soldier A finally got all the way to Bendix tech and support guys. Awesome guys and very informative. Not going to post all they had to say because contacting an attorney was suggested. What they did confirm is our air dryer is a Bendix AD-9 knock off.

So we ordered another complete unit as well as new cartridges. Will update the repair and coming upgrades and replacements they recommended when the parts arrive, hopefully soon because my xmas present is now a $31,000 paper weight in the driveway.

As for the entire story of this now developing saga, I think we are going to take that back to the Dragon Wagon's website. My feeling is if posted here there will be too much back lash and we don't have that kind of time or patience. Gotta finish packing so we can put in the new flooring and sell and move.

To everyone who has tried to help my deepest appreciation
K

P.S. I know everybody like pictures :)
 

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M

MRAP DREAM GIRL

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So, Frank here is an update we've been meaning to post but are just buried with work and projects so we are way behind. Covid shut our mobile entertainment business down and most of the components of the business are stacked to the rafters in every available closet or room. so we are playing Rubics cube trying to get all the old flooring out of the house. I think we are just going to do a couple of storage pods.

Move won't happen until the snow melts and we can see the ground again in the areas that we are shopping for the new homestead site. So, we are a little antsy at the moment.

On to the braking issue. Between Soldier A and our awesome neighbor Big B they got the schematic of the Bendix air dryer and figured out that someone had improperly serviced this unit. So, the little black ball and spring, in the first picture, were supposed to be inside the fitting in the second picture, not outside lol.

The boys pressed the brass keeper out and put things where they belonged and pressed the keeper back in. Then we ordered a couple of replacements for that valve in case we need them in the future. By the time Soldier A got everything polished up like new and blew out a bunch of the lines the new dryer cartridge had arrived and everything got put back together.

We also found a pretty awesome local big truck brake shop that is going to do a full service on the brakes as soon as they can get us on their schedule. But over all the brakes feel much better now. And he is totally distracted with the process of cleaning up my bow set and making it look like new so we can get the cargo cover on and start using Sybil to move.IMG_1696.JPGIMG_1711.JPG
 

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Mainsail

Mainsail

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MRAP DREAM GIRL said:
No code words. Jblm= joint base Lewis McCord. Mwm= Midwest Military. Tukwila, WA home of GAS contracted caterpillar dealer service center
Click to expand...
Was stationed at JBLM when it was two different bases, and drove thru Tuckwila a lot when I worked on that side. We're out in quiet Kitsap County now and dread the neverending traffic on that side whenever we have to be there.

PM me info on whatever trucks you may be selling. As a retired enlised there ain't much scratch but who knows.

Good luck and congrats on joining the exodus- wish we were.
 
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