Max wrote <<Maybe you should only do the leaking DV's in order to reduce the
possibility of a problem?>>
That's a good idea. I'll have to clean things really good to determine
which is the primary culprit/s. Usually the engine is pretty clean but it's
been so cold that I haven't been able to rinse it off. At the moment
there's a thin film of diesel around all 5 DV hold down clamps.
BTW, what kind of noise should I be listening for? I wonder how the
factory/dealer does them to make sure they "do it right the first time"
(also know as DIRTFT) ? I'm sure the factory uses a special tool to screw
all 5 or 6 in at once, but if I'm very careful with my torque wrench I
should be able to duplicate the torque on each DV pretty precisely, I think.
I suspect the 3 stage procedure for torqueing is to insure accuracy so there
must have been problems in the past. Is the metal on the IP where the DV's
are installed perhaps soft which could lead to inaccurate settings? Just
curious ---
Thx for the suggestion - -
LarryT
91 300D
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--------------------------------------------------
From: "Dillon, Meade M CIV SPAWARSYSCEN-ATLANTIC,53310"
<meade.m.dil...@navy.mil>
Sent: Friday, January 08, 2010 11:15 AM
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Subject: Re: [MBZ] Fuel delivery valve job
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
[SNIP]
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