Well, I begged and the shop decided they would do the DV on Gump. He was not pleased when I showed up, but it took all of 30 minutes to do the job, he was happy as a clam when I came to pick her up.

clay

On Jan 9, 2010, at 4:43 AM, LarryT wrote:

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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