MRAP DREAM GIRL
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It has the newer air dryer. just need the new filters I think
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Emergency lmtv brake help
- Thread starter MRAP DREAM GIRL
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My mistake they are $165 from NAPA. About the best price I can find is on eBay at the moment:
Make sure yours looks like this one. The plastic cartridge that is under the big aluminum dome on the top.
Rick
Haldex MTC Desiccant Cartridge Kit for Purest Air Dryer DQ6050 for sale online | eBay
Find many great new & used options and get the best deals for Haldex MTC Desiccant Cartridge Kit for Purest Air Dryer DQ6050 at the best online prices at eBay! Free shipping for many products!
rover.ebay.com
Make sure yours looks like this one. The plastic cartridge that is under the big aluminum dome on the top.
Rick
MRAP DREAM GIRL
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Rick,
You are too cool thank you so much. We want to make sure that's right so tomorrow I'll take a picture and post it. Basically it's a big black smooth cylinder with what looks like an aluminum base and lots of bolts to hold it together.
As always thanks
K
You are too cool thank you so much. We want to make sure that's right so tomorrow I'll take a picture and post it. Basically it's a big black smooth cylinder with what looks like an aluminum base and lots of bolts to hold it together.
As always thanks
K
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all the TM's for your truck fit on a little 8 dollar Sandisk thumbdrive so you can access them anywhere.
Put all the TM's for your truck in puter in one place. PDF files are easy. Open any PDF and click Ctrl and F at the same time and you get a search box.
Put something like air dryer into that search box and the PDF will goto all the instances for air dryer within that TM.
Try TM9-2320-365-20-3 paragraph 23-6
25. AIR DRYER. Service air dryer (para 23-6) every 12,000 miles (19,308 km) or annually, whichever occurs first
For the air dryer desiccant changeout that is in TM9-2320-365-20-5 paragraph 23-15
You needed the trouble shooting found in TM 9-2320-365-20-2.
Search that for the word desiccant and find 17 instances of your air dryer failure humans freezing and can not get home problem.
Assure you know the differences between the AO and A1 trucks .........
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I was surprized that I can not find the air dryer replacement desiccant cartridge
anywhere for the LMTV AO and/or A1 trucks. That is because it was not a "cartridge, but a "kit"
The original Haldex part 06721 and Oshkosh 45152 (NSN 440-01-337-7324) is a kit.
An hours labor and it is done.
It may have 22888 on the bag itself.
A Graver complete kit is Graver 419784
75 bucks and done, can't imagine what Cat at $150 and hour would charge.
Or how about 66 bucks
anywhere for the LMTV AO and/or A1 trucks. That is because it was not a "cartridge, but a "kit"
The original Haldex part 06721 and Oshkosh 45152 (NSN 440-01-337-7324) is a kit.
An hours labor and it is done.
It may have 22888 on the bag itself.
A Graver complete kit is Graver 419784
Haldex RN60A - Air Brake Dryer Repair Kit 4440-01-337-7324 RN60A LMTV FMTV | eBay
Haldex RN60A - Air Brake Dryer Repair Kit - Major Service Kit, For use with Pure Air™ Air Brake Dryer. Listed Item includes 1 Air Drier / Dehydrator Parts Kit. Each Truck Requires 1 Air Drier / Dehydrator Parts Kit.
www.ebay.com
75 bucks and done, can't imagine what Cat at $150 and hour would charge.
Or how about 66 bucks
LMTV FMTV Dehydrator Parts Kit 4440-01-337-7324 | eBay
Find many great new & used options and get the best deals for LMTV FMTV Dehydrator Parts Kit 4440-01-337-7324 at the best online prices at eBay! Free shipping for many products!
www.ebay.com
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MRAP DREAM GIRL
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So, Ladies & Gentlemen this is the air dryer unit I have on my truck. When we stopped in Laramie, WY on the way home a very nice and knowledgeable Laramie police officer pulled up next to the truck when he saw the cab up. He has had the same truck for 3 years and was kind of a 1078 guru. He told us this unit was one of the better upgrades. I'm sure he is on SS, just don't know his call sign.
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cool beans, that is a very nice $300 upgrade.
That one has a replaceable cartridge?
Is this it?
www.haldex.com
or this one?
It has numbers all over it to help
That one has a replaceable cartridge?
Is this it?
65624K - Air Dryer Cartridge - Haldex product
Haldex product 'Air Dryer Cartridge' (65624K): All Makes Cartridges, All Makes Like-Nu Air Dryers - Air Dryers - Air Dryer
or this one?
It has numbers all over it to help
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MRAP DREAM GIRL
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We're hoping so
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Ok that does NOT use the cartridge I linked to previously. The one Iinked is for the Haldex unit on my A1R:
I would say - based on the lack of matching sand-colored paint that it's been upgraded.
I would say - based on the lack of matching sand-colored paint that it's been upgraded.
MRAP DREAM GIRL
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So, Rick the link you provided here matches the cartridge sold by midwest for $176 to a T pretty sure that's what we need. However, Soldier A's OCD being as bad as it is he wants to take the canister off and see for himself first hand.My mistake they are $165 from NAPA. About the best price I can find is on eBay at the moment:
Haldex MTC Desiccant Cartridge Kit for Purest Air Dryer DQ6050 for sale online | eBay
Find many great new & used options and get the best deals for Haldex MTC Desiccant Cartridge Kit for Purest Air Dryer DQ6050 at the best online prices at eBay! Free shipping for many products!rover.ebay.com
Make sure yours looks like this one. The plastic cartridge that is under the big aluminum dome on the top.
Rick
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I think his intuition (OCD) is on the right track. Doing a little searching I would tentatively say you have a (much more common) Bendix AD-9 Dryer or a knock off of same (it appears to be a popular design that is copied):
If that's the case then it's a popular unit and cartridges are much cheaper but seemingly more time consuming to change - looks like you have to essentially dismount the whole unit to change out the cartridge...... The one on my truck took about 10 minutes to change since it's just 4 bolts and the top comes off without dismounting anything. For that my cartridges are $100 more expensive though. I would almost rather spend the extra labor and be able to get them cheaper and the AD-9 cartridge appears really common also.
Rick
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Well it looks like that Bendix AD-9 is a reasonable choice and cheap too. The pic above is clearly an A0 truck since there's no battery disconnect.
Rick
That one appears to be 12v. Do you know if there is a 24v option?
Would this one work?
AIR DRYER - 24 VOLT 24V - AD-9 AD9 STYLE https://www.amazon.com/dp/B07583F29H/ref=cm_sw_r_cp_api_glt_fabc_J2TMTQ33KRX5V3VAXZ8G
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Yeah looks like that's a candidate. My only concern is are the mounting straps included? They are included with the original Bendix unit.
The original Bendix AD-9 24v part numbers seems to be 65224 (includes mounting bracket and wiring harness):
65224 - Air Dryer - Haldex product
Haldex product 'Air Dryer' (65224): Bendix® AD-9, All Makes Like-Nu Air Dryers - Air Dryers - Air Dryer
Mounting bracket is available separately also:
107695K - Mounting Bracket - Haldex product
Haldex product 'Mounting Bracket' (107695K): Bendix® Repair Kits, All Makes Like-Nu Air Dryers - Air Dryers - Air Dryer
If you want the A1R style like my truck, it's a Haldex N50011H:
Haldex Purest Air Dryer N50011H MRAP 24v Untested for sale online | eBay
Find many great new & used options and get the best deals for Haldex Purest Air Dryer N50011H MRAP 24v Untested at the best online prices at eBay! Free shipping for many products!
rover.ebay.com
Rick
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Ronmar
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Have you cleaned your old one? Frank put a link to my video on how to do it.
All these dryers work on the exact same principal, the moist air passes thru the porus media and the moisture coalesces out of the air into droplets and gravity pulls those to the bottom to collect. The purge cycle exhausts the collected water. The only real difference is they put the desiccant and filtration into a cartridge on the new style that is easier to replace, but impossible to simply clean and service…
The old style actually has some good design going for it, with the large heat exchanger/cooler and it has a long pass dessicant chamber which gives more time for the air to transfer moisture. It may actually contain more media which means more surface area to coalesce…
Havn’t been able to find any specs on the old units though, but in the end they all are more than adequate if properly serviced, and the new ones will give just as much problem if neglected. This posting is the 3rd problem with newer dryers failing I have heard of in just the past few months.
As mentioned, dry air is the life blood of the brake system, and you must take care of the dryer…
Mine just started leaking out of the top where it bolts on. I have seen so many people upgrade that I figured this was a good time to do so.
I’ll check out your video
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MRAP DREAM GIRL
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OK Gentlemen, here is tonight's bedtime story.
MR OCD started the day with a couple of rounds of the purple degreaser, followed by a good soap wash of the area, and finally a good blow dry. No wondering minds here lol
We ended up having to take the entire thing out to remove the cartridge. There are no identifying numbers or markings on the casted base or cartridge, very suspicious. This whole assembly was beyond disgusting.
So, if I can get a couple of confirming opinions, I'm going to say this is indeed the Bendix AD-9. If that is truly the case I have found replacement cartridges for $28 if we buy in bulk. Soldier A thinks we should put in a new unit and run the truck for 30 days and change out again to try and get as much crud out of the system as possible. God he is anal! When he turned the assembly upside down this little spring and ball thing fell out of somewhere. Gotta figure out where.
MR OCD started the day with a couple of rounds of the purple degreaser, followed by a good soap wash of the area, and finally a good blow dry. No wondering minds here lol
We ended up having to take the entire thing out to remove the cartridge. There are no identifying numbers or markings on the casted base or cartridge, very suspicious. This whole assembly was beyond disgusting.
So, if I can get a couple of confirming opinions, I'm going to say this is indeed the Bendix AD-9. If that is truly the case I have found replacement cartridges for $28 if we buy in bulk. Soldier A thinks we should put in a new unit and run the truck for 30 days and change out again to try and get as much crud out of the system as possible. God he is anal! When he turned the assembly upside down this little spring and ball thing fell out of somewhere. Gotta figure out where.
Ronmar
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It looks like an AD9…
The dryer is not like an oil filter, it only filters/dries the air being injected into the system, so if anything got past the old cartridge, its in the system and swapping cartridges won’t fix that. Just keep the others sealed and change them annually.
You can get an idea if anything got past by draining the tanks and disconnecting lines downstream of the tanks.(The 2 lines feeding the treadle valve behind the drivers side grill are excellent candidates). Then while holding a rag loosely over the ends of the lines, close the tank drains and start the truck and let some flow build up and see if anything comes out into the “snot rag” then shutdown. You can do the same to the tanks while you drain them to see if anything comes out…
unfortunately the wet tank appears to be plumbed incorrectly on most of these trucks, so only about 1/3 of the air consumed by the brakes actually passes thru it. If all the air passed thru that tank it should catch most of the debris/crap. This is easy to fix by the way…
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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 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:
Rick
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 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
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