i just need to vent this to you 6.5 guys......i hate hummers and i hate their engines and transmissions.......

3 injection pumps a week.....
4 trannies a week.....

and when the heat gets here, it will be 8-10 injection pumps a week, and god knows how many countless radiators.......

heck i threw away a perfect injection pump last week cause they thought it was the pump, turned out to be a bad lift pump after i changed the injection pump and it wouldnt start......and if the PMD goes bad, guess what, new pump.......we dont even bother messing with them, we just swap the pump......

oh and to top it off, the hummers dont all use the same t-cases, i learned that the hard way today.........................




P.S. for those that dont know, i work in Iraq as a contractor, i fix military vehicles, HMMWV, HETT, HEMTT, LTVS, AVS, PLS, and the rest of those wonderous military abused vehicles.......so anyone else got any wonderous dealing with Hummers.......

You should be expert in this 6.5 and 6.2 then. When you get back, you should be able to market yourself to help us fix some of these problems.

Thanks for being there in Iraq supporting our troops.

Thanks for your work out there.

I do have an odd question. I'm not aware of too many variants with the PMD equipped engines, unless it's a newer one that has the Caterpillar ECU/Optimizer engine, or it's one of the new reliability enhanced versions with the geared/angled fan setup for the cooling stack.

Which variant is it?

-Steve

i just need to vent this to you 6.5 guys......i hate hummers and i hate their engines and transmissions.......

3 injection pumps a week.....
4 trannies a week.....

and when the heat gets here, it will be 8-10 injection pumps a week, and god knows how many countless radiators.......

heck i threw away a perfect injection pump last week cause they thought it was the pump, turned out to be a bad lift pump after i changed the injection pump and it wouldnt start......and if the PMD goes bad, guess what, new pump.......we dont even bother messing with them, we just swap the pump......

oh and to top it off, the hummers dont all use the same t-cases, i learned that the hard way today.........................


P.S. for those that dont know, i work in Iraq as a contractor, i fix military vehicles, HMMWV, HETT, HEMTT, LTVS, AVS, PLS, and the rest of those wonderous military abused vehicles.......so anyone else got any wonderous dealing with Hummers.......

Thank you for serving our country. We root and pray for you guys as a family.

There have been several aftermarket parts that have been developed specifically to address some of the design shortcomings of the 6.5 and it's eccentricities. I am not familiar with what would be needed to ensure that these aftermarket parts are certified and approved for use in the military, but is it possible for you to be using the following:


Prevention of PMD failures: use PMD/FSD isolator, (Mods: This link is provided by Bill Health from his website - Heath doesn't sell direct anymore - he sells through these guys) i.e. http://www.teakatoys.com/MAX_E_TORK_System_from_Heath_Diesel_p/hea-hdp1545.htm
Prevention of Lift Pump Failures: Kennedy's centrifugal pump: http://www.kennedydiesel.com/detail.cfm?ID=415
Elimination of Oil Pressure Switch (Related to Lift Pump power failures): http://www.kennedydiesel.com/detail.cfm?ID=402I'm not trying to cause trouble, but it seems to me with all the real-world torture testing you're doing over there, there should be some consideration of some of the real-world solutions that are in use over here.

Thanks again,

Rob :)

What PMD? PCB? If you hate HMMWV's now, just wait, there talking 100% replacement of the locking tabs on the hubs, something about the metal being soft.

If you're talking about the geared hub retention nut issue - that was solved and fixed a few years ago.

It's always fun watching your wheel/tire combo come off and trail into who knows where...

Oh, yeah. If it's the PCB - there have been TONS of issues with certain models of PCB's.

-Steve

What PMD? PCB? If you hate HMMWV's now, just wait, there talking 100% replacement of the locking tabs on the hubs, something about the metal being soft.

Hello zuzupower,

Thank you for being there providing tangible support to our troops. Stay safe and our prayers are with you all.

I suppose if we hammered our trucks here the way our troops did over there, we might see similar problems, too.

When you get back, please join this forum...

Regards,
Grateful 6.5TD'er

i just need to vent this to you 6.5 guys......i hate hummers and i hate their engines and transmissions.......

3 injection pumps a week.....
4 trannies a week.....

and when the heat gets here, it will be 8-10 injection pumps a week, and god knows how many countless radiators.......

heck i threw away a perfect injection pump last week cause they thought it was the pump, turned out to be a bad lift pump after i changed the injection pump and it wouldnt start......and if the PMD goes bad, guess what, new pump.......we dont even bother messing with them, we just swap the pump......

oh and to top it off, the hummers dont all use the same t-cases, i learned that the hard way today.........................




P.S. for those that dont know, i work in Iraq as a contractor, i fix military vehicles, HMMWV, HETT, HEMTT, LTVS, AVS, PLS, and the rest of those wonderous military abused vehicles.......so anyone else got any wonderous dealing with Hummers.......

Hello zuzupower,

Thank you for being there providing tangible support to our troops. Stay safe and our prayers are with you all.

I suppose if we hammered our trucks here the way our troops did over there, we might see similar problems, too.

When you get back, please join this forum...

Regards,
Grateful 6.5TD'er


Yeah, what he said ..............and keep us rolling so we can shove a grenade up the "Bad Guys" a$$.

A sincere Thank you!

Louis

I feel your pain. There have been 3 blocks in my '97 TD H1 (be glad you only the ambulances over there have TD's) The PMD cooler is the best preventive mod you can make. I have replaced 5 or 6 Lift pumps (I might have to try the kennedy one posted above) Everyone attributes the injector pump failure to dirty fuel in the "eyes" cant imagine having to deal with fuel impurities in the desert during war. I don't know why GM truck owners never experienced the block failures (#8 cylinder) that Hummer 6.5 owner have{could be the few thousand lbs extra they weigh}. Luckily when AM General bought the block they redesigned it (so far no reported failures) Keep up the good work over there

Hello zuzupower,

Thank you for being there providing tangible support to our troops. Stay safe and our prayers are with you all.

I suppose if we hammered our trucks here the way our troops did over there, we might see similar problems, too.

When you get back, please join this forum...

Regards,
Grateful 6.5TD'er

i got an old 1986 6.2 suburban, its my old faithful workhorse, its got a few small problems but nothing i cant sort out.......

Thank you for serving our country. We root and pray for you guys as a family.

There have been several aftermarket parts that have been developed specifically to address some of the design shortcomings of the 6.5 and it's eccentricities. I am not familiar with what would be needed to ensure that these aftermarket parts are certified and approved for use in the military, but is it possible for you to be using the following:

Prevention of PMD failures: use PMD/FSD isolator, (Mods: This link is provided by Bill Health from his website - Heath doesn't sell direct anymore - he sells through these guys) i.e. http://www.teakatoys.com/MAX_E_TORK_System_from_Heath_Diesel_p/hea-hdp1545.htm
Prevention of Lift Pump Failures: Kennedy's centrifugal pump: http://www.kennedydiesel.com/detail.cfm?ID=415
Elimination of Oil Pressure Switch (Related to Lift Pump power failures): http://www.kennedydiesel.com/detail.cfm?ID=402I'm not trying to cause trouble, but it seems to me with all the real-world torture testing you're doing over there, there should be some consideration of some of the real-world solutions that are in use over here.

Thanks again,

Rob :)

our job is to fix whats wrong, not try and prevent it from happening.......had a tranny full of black tranny fluid today when i swapped the t-case......i was told not to change it and to get it back in service.......sadly.....

Thanks for your work out there.

I do have an odd question. I'm not aware of too many variants with the PMD equipped engines, unless it's a newer one that has the Caterpillar ECU/Optimizer engine, or it's one of the new reliability enhanced versions with the geared/angled fan setup for the cooling stack.

Which variant is it?

-Steve

we got stuff from all years, some older and some newer, i couldnt tell ya, i get the truck and i get the parts and i fix them......i asked about the PMD and almost got cussed out......

You should be expert in this 6.5 and 6.2 then. When you get back, you should be able to market yourself to help us fix some of these problems.

Thanks for being there in Iraq supporting our troops.

i plan on building a 6.5 when i get back......

Yeah, what he said ..............and keep us rolling so we can shove a grenade up the "Bad Guys" a$$.

A sincere Thank you!

Louis

thank you for keeping us safe.....

I feel your pain. There have been 3 blocks in my '97 TD H1 (be glad you only the ambulances over there have TD's) The PMD cooler is the best preventive mod you can make. I have replaced 5 or 6 Lift pumps (I might have to try the kennedy one posted above) Everyone attributes the injector pump failure to dirty fuel in the "eyes" cant imagine having to deal with fuel impurities in the desert during war. I don't know why GM truck owners never experienced the block failures (#8 cylinder) that Hummer 6.5 owner have{could be the few thousand lbs extra they weigh}. Luckily when AM General bought the block they redesigned it (so far no reported failures) Keep up the good work over there

all of the HMMWV's here are turbocharged, alot of the marine corp HMMWV's are NA.....



i do plan on finding a hummer intake manifold, headers and up pipes and building a custom turbo setup for a 6.5, i got the plans swirling around in my head.....i love their setup, almost identical to a Dmax.......unlike their civilian pickup truck brothers.....i am having t-case problems right now, i swapped in a new case, then was told it was the wrong case cause it had the small output shaft, i needed the bigger one, so i swapped in the right one today, now the SOB wont shift through the gears in the T-case.......its driving me insane, ive been on this thing going on 3 days now.......

They get electronic DS4 on military Hummers? I thought they were using DB2 mechanical to avoid PMD troubles...

some are DB2's.....the older ones from what i was told.....i swapped a DB2 last week......

A little taste of why I laugh every time I see a civilian H1. To think someone would pay $125K for one!
As for replacing the pump for a bad PMD, put the suggestion on a DA Form 1045 and send it up. May be bonus money involved since it will save the Army money, just make sure you get the credit and not some idiot supervisor that bitched at you for it. Even civilians can get in on the bonus money action. Since this affects all branches, it may even go to DoD level.

problem is that some of pumps get "runaway" when they just swap the PMD.....


oh and the hummer i swapped the t-case in this week came right back in 2 hours later to get the tranny changed out........AND I TOLD THEM TO CHANGE IT WHILE I HAD IT OUT.....NOOOOOOO THEY WOULDNT LISTEN.......PISSED THE 2 GUYS OFF THAT HAD TO DO THE SWAP......

We had a rash of the coolers INSIDE the T-case leaking and forcing fuild out the breather line into the AIR CLEANER!

Took me like a day to figure out how the hell the air cleaner got tranny fluid in it.

The HUMVEE drivetrains are Barely recognizable as GM. They all have different setups and part numbers. The blocks are the only thing in common i think.

Trannies in the old ones were TH400 with no park!?! The transfer cases have internal coolers and are some wierd NP number. Pretty much a completely different beast. They still use mechanical lift pumps.

On injectors pumps. Had 2 BRAND NEW 1114 up armor HUMVEEs 200 mi each both had "bad" IPs. 500 mi later another one "BAD", can anyone say PMD!! The good news is all our "bad" pumps went to another facility to get reworked, not just tossed.

I was IA with the army, all theres were 6.2 th400 hum's I think. when we were convoying down towards kuwait the wrecker I was in quit and the rest of the convoy kept trucking:mad:. sure wish they would do some more preventive maintance rather than fix it when its broke... other than that our other hum's were destroyed by things out of our control...

We had a rash of the coolers INSIDE the T-case leaking and forcing fuild out the breather line into the AIR CLEANER!

Took me like a day to figure out how the hell the air cleaner got tranny fluid in it.

In the Hummer world this is referred to as the Vampire here is a good link on it:
http://idiventure.com/flashoffroad/features/Tcase/Vampire/vampire.htm

the transfercases arent GM cases, they are AWD (All Wheel Drive) AM General cases, NP242 if i can remember correctly......any heavy truck with a TH400 in it wont have park, they are notorious for breaking, that is why GM never offered a "PARK" position on the old Chevy Long Horn trucks from the 68-72 body style........it was a bad design then and still is to this day.........


lift pumps on the things are a PITA also.....

zuzu- who do you work for? I've done the soldier thing twice and the contractor thing once. I worked for LSI at camp speicher, working conditions were terrible but its a HMMWV not a rocket ship. The 1114's and 51's have their problems but if your truck was carrying almost 7000lbs over your gvw, your truck might suffer a bit also. Why do you think you are seeing more and more MRAPS, they are slowly moving the HMMWV's to the IA. These trucks were never designed for this type of warfare or armor package so the engineers must play catchup. They are the easiest to diagnose and repair, I'm sorry you have to come on here and complain about your job when your making damn near 90g's if not more. I only worked for LSI for a few months until I got a job with the DoD. Now I work at TACOM.

I'm know I'm new here and probably shouldn't be jumping on someone like this but I think you need to get yourself in check. Suck it up, change those IP's, and trans' like there going out of style and collect your fat check. I'm a 63B and in Baghdad right now if you need help repairing any of your trucks.

chizwizdiz,

You just said what I was thinking. Good post and points.

zuzupower,

You're a contractor, not a soldier....do your job and cash your check. If you don't like the work conditions, get the heck out. You must know by now the military is not run like a private company.

What gives me the right to mouth off???...my tax dollars paying your above average paycheck.

For all you boys (and girls) over there, work hard and stay safe.

George

i hate to break it to you but the m1114 hmmwv's do NOT have PMD's i know because i am a MARINE 0311 and i gotten to know these vehicles so well that motor t just gives me the parts i need to fix them the whole thing behind the hmmwv's is that it's designed to width stand a Electric Magnetic Pulse Attack they are all mechally injected the only thing on them that is elec. is the comm and the IED
electronics and as far as the pumps go another reason that they do go bad is that old saying about the govenment (the cheapest bidder) and the fac that every thing runs on jp-8 and if you know anything at all then you know they run alot hotter on jp-8 than regular diesel as far as the trannies go that m1114 weighs in at 12400 pounds (whats the max gross weight ) 12000 and that is dry weight so there is your reason for the trannies i really dislike people who talk about these vehicles like this because i have spent a lot of time living out of these vehicles and they have saved my life countless times

CPL Ballard
USMC

i hate to break it to you but the m1114 hmmwv do NOT have PMD's i know because i am a MARINE 0311 and i gotten to know these vehicles so well that motor t just gives me the parts i need to fix them the whole thing behind the hmmwv is that it can widthstand a emp attack they are all mech injection the only thing on them that is ele. is the comm and the IED electronics and as far as the pumps go another reason that they do go bad is that old saying about the govenment (the cheapest bidder) and the fac that every thing runs on jp-8 and if you know anything at all then you know they run alot hotter on jp-8 than regular diesel as far as the trannies go that m1114 weighs in at 12400 pounds (whats the max gross weight ) 12000 and that is dry weight so there is your reason for the trannies i really dislike people who talk about these vehicles like this because i have spent a lot of time living out of these vehicles and they have saved my life countless times

CPL Ballard
USMC



you don't have to get hostile. no one was being hostile. someone was just venting their frustrations, probably after working on them day after day for the same issues.

you don't have to get hostile. no one was being hostile. someone was just venting their frustrations, probably after working on them day after day for the same issues.

What is hostile here?

i was not trying to be hostlie here i was just trying to explain the reason why they do break down plus i just dont like it when people talk about things they know nothing about now i am not saying that he does not work on them but maybe he works on civilian h-1 not hmmwv etheir way he has got is facts all screwed up

What is hostile here?


the whole disliking this and that and the caps which is the internet equivalent of screaming.

i was not trying to be hostlie here i was just trying to explain the reason why they do break down plus i just dont like it when people talk about things they know nothing about now i am not saying that he does not work on them but maybe he works on civilian h-1 not hmmwv etheir way he has got is facts all screwed up


i'd hate to break it to you but there will always be people who get things wrong. id' say just inform him that he's wrong and tell him what is correct.

the whole disliking this and that and the caps which is the internet equivalent of screaming.
I have seen posts from you that were a lot more hostile, Dave....

the cap's was just so he knew i was for real the way he is talking is like me saying you dont have stacks on you truck (which sound real good by the way) do you get my point

I have seen posts from you that were a lot more hostile, Dave....

guilty there. :o:


the cap's was just so he knew i was for real the way he is talking is like me saying you dont have stacks on you truck (which sound real good by the way) do you get my point


thanks for the stacks comment. worked real hard to get it to sound that way. glad to have you here don't get me wrong. never knew those engines were mech injection, but it would make sense as an EMP attack like you said would leave the truck dead in the water, and thats the last thing you want out there. you say those weigh over 11K empty? jeez. i've had my truck at 11k once and i knew the load was there and i'm sure the trans did too but the engine didn't seem to care too much.

Just let it fly. I sometimes get hostile too (don't we all), and often times use caps, bold, or some other method to create emphisis, that has more than once, been interprited as yelling.

over 11k is a dry weight no fuilds no comm no ecm (electronic conter measure ) no gear no weapons system no chow or water or spare tire either just the hmmwv withe the mack-3 armor kit now the army has a newer version and i do not know what there weight is but i do no what my truck weighedguilty there. :o:





thanks for the stacks comment. worked real hard to get it to sound that way. glad to have you here don't get me wrong. never knew those engines were mech injection, but it would make sense as an EMP attack like you said would leave the truck dead in the water, and thats the last thing you want out there. you say those weigh over 11K empty? jeez. i've had my truck at 11k once and i knew the load was there and i'm sure the trans did too but the engine didn't seem to care too much.

over 11k is a dry weight no fuilds no comm no ecm (electronic conter measure ) no gear no weapons system no chow or water or spare tire either just the hmmwv withe the mack-3 armor kit now the army has a newer version and i do not know what there weight is but i do no what my truck weighed


holy crap thats heavy. :eek: the transmissions must hate all that weight.

yeh and the coolers on them are not that big they are about 3" by 16"

yeh and the coolers on them are not that big they are about 3" by 16"


i wonder if you can somehow get aftermarket coolers on them if you could extend the life of the transmissions.

There are a few aftermarket trans and Tcase coolers , I have one sitting in my garage now waiting to get plumbed into my ,97 H1. They are as simple as a pump wired to a temp switch and a small radiator. There are tons of way to skin a cat , but to make mods survive an electric magnetic pulse attack like the military has to ads a another complexity to the solution. (having to go old school eclectic free, great for water fording also)

How does a guy go to work for one of the contractors over there working on military equipment?

There is no room for anything else on a M1114(up armoured HUMMER)(what soldiers are driving in Iraq). They were initially made for MP's during the short lived Bosnia war. They were designed to keep soldiers safe from small anti-personnel mines and other small explosives. They were never designed for what they are doing know, but, they are tuff vehicles and are getting the job done. They are so crammed up with what a soldier needs to stay alive that their is no room for anything else. Go look at a civilian HUMMER and you will see what I am talked about. They have no leg room or any other room at all.
I have done two tours in Iraq and will probably do two more before I get out of the Military. During those two tours I spent on average over 14 hours a day 7 days a week outside the wire. That said their is nothing more in this world that I hate than some civilian over in Iraq making over $85,000 a year tax free getting free room and free food being whiney about doing what he is paid to do. If you dont like your job come back to the US and get paid less than half for doing the same job.

Do a google search for GOVT jobs, Military jobs or the such. Their is alot of contractor jobs over their. Too many company's to list.
Try KBR or brown and root, I dont know what they are calling themselves these days.
Wish you luck!

I did just that and put in an application with Stregatic Global Staffing. Thanks.

I have done two tours in Iraq and will probably do two more before I get out of the Military. During those two tours I spent on average over 14 hours a day 7 days a week outside the wire. That said their is nothing more in this world that I hate than some civilian over in Iraq making over $85,000 a year tax free getting free room and free food being whiney about doing what he is paid to do. If you dont like your job come back to the US and get paid less than half for doing the same job.

Hard to say it any better than that. Thanks for the service, I very much appreciate it.

I got back in Oct 2006, i was working with the Foriegn guys fixing there older 6.2L HUMVEE's mostly. You think an 1114 is overloaded try a 1986 6.2L with 10k lbs on it. They were retrofitting all the suspensions on them when i was there. They had some HUGE springs going into those old girls.

Of the 4 or so 1114's we had we replaced 3 IP's in about 4 months. The first one did, the truck only had 200 (yep thats two hundred) miles on it.

On a side note, did you know a HUMVEE t-case has a cooler inside it? I thought that was pretty cool. They also you a hydrauliclly activated fan clutch (its hooked into the PS system, electrically actived solenoid controls it via a temp switch).

They are a very cool vehicle, i always think of them as a piece of equipment more then a truck cause they drive and operate quite a bit different then a normal pickup truck.

I am done rambling now.

I see zuzu hasn't come back to defend himself. Hope I didn't step on anyones toes here but it just drives me crazy when someone critizies these HMMWV's, especially a contractor.

For the guy looking for contractor jobs kbrjobs.com, http://www.urscorp.com/EGG_Division/lsi/index.php

I worked for LSI in 06. They were an ok company to work for. Conditions here have changed drastically and it would be an ok place to work for now. In 06, the particular contract I was on was fairly new so the work areas were not built up as much. Now they have everything you will ever need to work on a military vehicle, at least the guys here in baghdad do.

yeh and the coolers on them are not that big they are about 3" by 16"

Your not thinking of the power steering cooler are you? The ones I work on the P/S cooler is about 1-1/2"x2"x30" and the trans is about 1-1/2"x12"x30". Engine oil cooler is about 1-1/2"x20"x30".

They also you a hydrauliclly activated fan clutch (its hooked into the PS system, electrically actived solenoid controls it via a temp switch).

toyota started that on the 1986.5 supra turbo. its the best fan setup on anything ive ever seen!

Here is info and pics on the Hummer T case cooler
http://flashoffroad.com/features/Tcase/Vampire/vampire.htm

hmmmmmm seems i started some controversy on here........i havent been on in a while cause i just forgot about posting this on here........and yes my contract states i SHOULD make 85K a year.......in reality i make about 72K a year.......now remember i work seven days a week, 12 hours a day, thats 84+ hours a week, twice what a normal job works, a few weeks ago i did 160 hours in 10 days making sure those trucks were rolling 12 hours a day AND spent another 4 hours at night in the laundry, 16 hours a day......i took a day off today to get some stuff done before i go on R&R back to the states thats why im posting at this time in the afternoon........and if you think im making all this big $$$$$$ think again......we are the lowest paid people over here.......DynCorp's mechanic's pay would really make you sick......150k+........some are making over 200K+.......and the last 7 or 8 days i spent working under tin metal roof outside with no breaks......OH AND YES I DO PAY SOME TAXES......THANKS TO THE HEART ACT........SOOOOOOO maybe before you guys start jumping to conclusions you need to get your facts straight......for people that hate us so bad you rely on us a AWFUL lot........


and yes hummers are junk........cause if they were so good they wouldnt be replacing them........i gaurantee if we would of had MRAP's at the beginning of the war the US wouldnt of lost half they soldiers they have...........

this guy is an idiot the ****ing MRAP's are junk you take that thing off road and the spring hanger break off or the fact that it beat's you to death yeh it will save your life in an IED but it was design to break away which me in the event of an IED you would be left stranded and have to wait for wreaker suport. and he he is complaining about i work all this time well i got news for you buddy when i was a ****ing PFC i made about 9000 dollars in about 8 months in 2005 and i was lucky to get about 2 to 3 hours of sleep a night and i had to walk every were we did not have the m1114 yet and the high back could not stand the IED and about every 70 to 80 days when we would come to camp fallujah to take shower's and refuel i would see you ****s at the chow hall eating all that free food and getting all fat and nasty and you guys would bitch about every thing the fact of the matter is you are worthless and suck at life

this guy is an idiot the ****ing MRAP's are junk you take that thing off road and the spring hanger break off or the fact that it beat's you to death yeh it will save your life in an IED but it was design to break away which me in the event of an IED you would be left stranded and have to wait for wreaker suport. and he he is complaining about i work all this time well i got news for you buddy when i was a ****ing PFC i made about 9000 dollars in about 8 months in 2005 and i was lucky to get about 2 to 3 hours of sleep a night and i had to walk every were we did not have the m1114 yet and the high back could not stand the IED and about every 70 to 80 days when we would come to camp fallujah to take shower's and refuel i would see you ****s at the chow hall eating all that free food and getting all fat and nasty and you guys would bitch about every thing the fact of the matter is you are worthless and suck at life


Whoa dude,, chill out be4 a Mod kicks you,,, in the pills.

And a big thank you to all of you guys that are over there,, so I have the freedom to be here. Even if you sound a little bitchy at times :rolleyes:

Whoa dude,, chill out be4 a Mod kicks you,,, in the pills.

And a big thank you to all of you guys that are over there,, so I have the freedom to be here. Even if you sound a little bitchy at times :rolleyes:

x2 for sure

http://i102.photobucket.com/albums/m92/JodeanSS/smiley_popcorn_1.gif