PMD Removal [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: PMD Removal


GMC 6.5TD Guy
08-25-2007, 05:15 AM
Gents,

is anyone aware of an easier way to remove the PMD from the IP. It looks to me that I have to remove the intake manifold to remove it. What a crazy place to put it!

Regards,

eppoh
08-25-2007, 08:46 AM
Gents,

is anyone aware of an easier way to remove the PMD from the IP. It looks to me that I have to remove the intake manifold to remove it. What a crazy place to put it!

Regards,

Mechanic at the Chevy dealer says, he removes just the upper intake, loosens and rotates the pump towards the passenger side, then with a small torx bit inserted in a racheting box wrench, unscrews it from the IP. Don't forget to mark where the pump was timed.

As a side note, he says they never change just the PMD, becuase GM will not stand behind it if fails in a month or two unless they have changed the IP too. Sounds like GM's way to make their customers pay insurance on the repair.

GMC 6.5TD Guy
08-25-2007, 03:38 PM
Which bolts do you loosen to tilt the pump, might sound like a stupid question but I don't want to mess this thing up as I haven't worked much on diesels yet.

Thanks,

msuman
08-25-2007, 04:03 PM
There are three on the front side of the pump where it mounts to the pump housing. Look for where the pump is like a triangle you will see three nuts.

But as eppoh said - DO NOT DO THIS WITHOUT SCRIBING THE PUMP! If you don't scribe this and move the pump then your timing will be off and you will probably have to trailer it into the dealer to retime it for you. I'm sure that it would not be cheap.

That's about all I know because I am just learning myself. :)

jackb
08-25-2007, 04:52 PM
Alot of folks just disconnect the PMD and leave it in place and connect the new one to the plug with the harness.

soundwaves
08-25-2007, 04:57 PM
got mine off in five minutes with removal of nothing, cut a 90 degree allen wrench to fit, use a scewdriver on the rest. <--scewdriver is a small 90 degree driver to that you can get at home depot. made by milwaukee, not labeled scewdriver but that use to be its name, about $30. Seriously, ill take bets that I can do it in five minutes with my tools, I looked at that darn thing for months and thought no way, boy was I wrong.

normy01
08-25-2007, 06:40 PM
Any Pictures of the tools you used?
I would love to see them.
Thanks

jifaire
08-25-2007, 06:52 PM
I can't figure out why anyone would WANT to remove a PMD.

If the thing is dead, leave it there to bake in peace.

If it isn't dead, leave it there until it is. (sometimes, they last a LONG time on the IP, if there is enough fuel flow. If you are looking to remote-mount it, don't. Start with a new PMD.)

soundwaves
08-25-2007, 07:43 PM
my PMD was brand new so I wanted to save its life while I had the chance. As far as the tools used, a small 90 degree allen wrench, cut off to fit in the tight area, and a scewdriver. http://www.milwaukeeconnect.com/webapp/wcs/stores/servlet/product_27_40028_-1_682289_192328_192327

kittysniper454
08-25-2007, 07:51 PM
GM got the bright idea to put the pmd under the manifold in the hottest part of the engine. The heat drasticly shortens the life expectancy of this part. There is no way around it, it is a bitch to get to, but there ARE after market kits that allow yoy to re-locate it where it will stay cooler and ultimatly last longer. The kits are well worth it since this is an EXPENSIVE part to replace every year or so.

jifaire
08-25-2007, 07:51 PM
my PMD was brand new so I wanted to save its life while I had the chance.


I would try to save a brand-new one, too. Did GM just finish changing it?

It HAS to cost them more to take everything apart and change the PMD than it would cost them to install a Heath Isolator.

However, my GM guys told me that remote-mounting a PMD wouldn't work. ROFL. What maroons.

soundwaves
08-25-2007, 08:10 PM
just bought the truck, guy before me gave me reciepts for about $2000 worth of work at the chevy stealer, PMD was one of them.

mudbath
08-25-2007, 08:46 PM
I just changed my lower intake from "S" to "F" and while I had it off I thought I would take it off, even then it was a b*tch. I thought if I took it off and loosened a retighten the nuts on the transitors and kept it in my truck, that someday I may see a fellow 6.5 er in need of it on the side of the road. It was just starting to go so it might get someone home.:cool:

jifaire
08-25-2007, 09:06 PM
It was just starting to go so it might get someone home.:cool:

Nothin says love like a spare PMD. Even a slightly faulty one.

bgittens
08-26-2007, 03:19 AM
GM got the bright idea to put the pmd under the manifold in the hottest part of the engine. The heat drasticly shortens the life expectancy of this part. There is no way around it, it is a bitch to get to, but there ARE after market kits that allow yoy to re-locate it

Yes. All of the aftermarket kits allow you to re-locate it, but...

where it will stay cooler and ultimatly last longer. The kits are well worth it since this is an EXPENSIVE part to replace every year or so.

there is only one aftermarket kit that is worth it and makes it last longer. Heath Isolator.

eppoh
08-26-2007, 01:57 PM
However, my GM guys told me that remote-mounting a PMD wouldn't work. ROFL. What maroons.


Yeah, I'll bet they are morons as well.

msuman
08-26-2007, 02:59 PM
LOL :agreed:

Yeah, I'll bet they are morons as well.

rhinopkc
08-26-2007, 04:20 PM
As a side note, he says they never change just the PMD, becuase GM will not stand behind it if fails in a month or two unless they have changed the IP too. Sounds like GM's way to make their customers pay insurance on the repair.

That's funny right there, because when GM was paying the bill, only the PMD got changed on my truck. Believe me, I argued like hell for a new pump, but they would only pay for a PMD.

powerchallenged6.5
08-27-2007, 02:27 PM
That's funny right there, because when GM was paying the bill, only the PMD got changed on my truck. Believe me, I argued like hell for a new pump, but they would only pay for a PMD.

The same thing happened to me about 6 months ago. I knew that I was still in warranty AND I knew it was the PMD (I had a spare that I could swap out). They diagnosed it as a bad PMD/IP and would have replaced both IF it was the original pump. Here is where it get silly. They told me that because the IP was not the original or dealer installed replacement that they would not replace the IP, only the PMD. I said to myself, GM will not warranty the IP because the IP was an aftermarket rebuild BUT will warranty the PMD that they have not idea where it came from or how old it is? Kinda sounds like an admission that the PMD is the problem not the pump. If GM really thought it was the pump, not the PMD, they should have denied the claim completely. But by eating the PMD, they in essense said
"WE know that the real trouble is the PMD and to cover our tracks we usually replace the injection as well as the PMD so it looks like it's Stanadyne's fault. But since it is not an OEM built pump, we will only replace the part that is really bad, the PMD"

That might sound a little sarcastic but really that is what it boils down to IMO.

Has anyone else ran into this situation?

rhinopkc
08-27-2007, 06:26 PM
My pump and PMD were the originals from the factory, I know this because my truck has been in my family since it was new. They still denied me a new pump.

powerchallenged6.5
08-27-2007, 06:31 PM
My pump and PMD were the originals from the factory, I know this because my truck has been in my family since it was new. They still denied me a new pump.

Rhino, you really need to read this thread from the FAQ http://www.dieselplace.com/forum/showthread.php?p=787016#post787016

I think you need to do a little jumping up and down at the dealer. You know, the squeaky wheel gets the grease.

Did they actually give a reason why they denied the claim?