According to my recollection of Marshall Booth's descriptions, it is
possible to follow correct torque procedure (30Nm - release - 30Nm -
release - 35Nm - lockdown) and still warp the IP body, which
requires a
re-do.
My idea of doing one at a time (when doing them all) would help you
determine which one had warped the IP body. I admit I've only rebuilt
all of them at once on two different motors, and on neither motor
did I
start the engine between each DV rebuilt. Both were OM60x engines and
on neither did I have any problems, but a thought experiment lead me
to
believe that an engine start to listen to the IP between each DV might
be wise. Could be either too difficult or worthless if you have the
intake manifold off when you re-start and can't hear anything
different
because of the extra noise from the intake openings in the head.
Maybe you should only do the leaking DV's in order to reduce the
possibility of a problem?
-Max
-----Original Message-----
From: mercedes-boun...@okiebenz.com
[mailto:mercedes-boun...@okiebenz.com] On Behalf Of LarryT
Sent: Friday, January 08, 2010 11:05 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] Fuel delivery valve job
Hi Max,
I've yet to do my DVs since it's so greatly improved following the
MMs -
but the DVS are leaking and need t be changed. I was considering your
suggestion about doing 1, start the engine, then move to the next one.
When I looked at my 91 300D, it looks like I need to at least partly
remove the manifold to access the rear 3 or 4 DVs so I'd rather not
try
your procedure.
However, you said "Easy to do the procedure right and still have a
problem," - that's pretty depressing! Do it right and STILL have a
problem? Jeez, what a PITA.
I may have to let the dealer do it if that's the way it is. I really
don't want to damage the IP!
Please explain how I might follow the torque instructions and *still*
have a problem --- Or better, how can I follow the instructions and
do
it *right* the first time?
Gotta go, my head is spinning. Time to defornicate... ;-)
LarryT
91 300D
OilAnalysis Time?
Looking for Weber Parts or Porsche Posters?
www.youroil.net
--------------------------------------------------
From: "Dillon, Meade M CIV SPAWARSYSCEN-ATLANTIC,53310"
<meade.m.dil...@navy.mil>
Sent: Tuesday, January 05, 2010 8:06 AM
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Subject: Re: [MBZ] Fuel delivery valve job
It's not that bad, just requires very specific steps, cleanliness,
patience, and the right tools including the special socket and a
torque wrench, and some parts. However, easy to screw up and cause
expensive damage if done wrong, so handing off to a pro is the right
choice in some circumstances.
If you detect any new noises from the injection pump, one or more of
the DV's has not set correctly during the torque procedure and needs
to be re-torqued (torque to 30Nm, release, torque to 30Nm, release,
torque to 35Nm and lock down). Easy to do the procedure right and
still have a problem, but that noise is due to a warped IP body which
will cause expensive damage if not fixed. For that reason and to
avoid confusion about which DV might be the cause of such a
hypothetical noise, I think it's best to do one DV at a time and
start-run the engine briefly after each DV has been re-sealed and
locked down.
I like the new word: defornicate. Don't mis-underestimate its uses!
-Max
-----Original Message-----
From: mercedes-boun...@okiebenz.com
[mailto:mercedes-boun...@okiebenz.com] On Behalf Of Redghost
Sent: Tuesday, January 05, 2010 12:49 AM
To: Mercedes Discussion List
Subject: [MBZ] Fuel delivery valve job
The indy scared me about this job. He said it is too delicate for
him
to do, but I suspect it is more that Gump is a heap and he is not
interested in keeping her on the road. He agreed to do the job
anyway.
I have done enough of these sorts of "simple" jobs that end up
screwing the car up. Figured it would just save us all headache to
have a pro do it, since the past few times under the hood, I ended up
having a shop defornicate the mess I made.
clay
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To search list archives http://www.okiebenz.com/archive/
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