The white plastic "fingers" on the vacuum valves (PN 002 997 53 36) on top of the valve cover have worn off. I purchased new replacement valves, and was wondering if there is a specific lube for these "fingers" so that they don't wear away. Thanks in advance!

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1982 240d 4-speed-sold
1981SD-also sold

I used white lithium grease before I removed that valve and disabled the EGR.

Brian Carlton posted on how to remove the valve and what vacuum lines to plug and eliminate.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

If you're speaking of the '81SD, you can just eliminate those 3/2 valves because they only function to operate the EGR. You can also eliminate all the tubing to and from the black box for a cleaner underhood environment.

I've posted the exact procedure in the past under my name and "EGR".

If you're set on keeping the EGR plumbing in place, you do not need to lubricate the little levers on the valves, as they are apparently a self lubricating plastic. (per the repair info on dieselgiant.com at least)

That being said, I'm now thinking of gutting the EGR system on this car and seeing how it behaves. Hmm...

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-Josh
Testing the cheap Mercedes axiom, one bolt at a time...

I'm pretty sure they are NOT supposed to be lubed at all.

Danny

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Grease or oil on the levers will accumulate dirt and cause more problems that it solves.

Thanks for the responses!
I should have specified this is for a 1984 300D-not my car right now but might be soon. From what I have read here, it might be to my(our) benefit to leave the EGR valve functional since we have emissions testing here in Ohio-
I think I read that a disabled EGR valve might create more particulates which is exactly what the emission test is for diesels here. So that is why I was going to replace the vacuum valves. Not sure what to do now....

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1982 240d 4-speed-sold
1981SD-also sold

Fairly easy.

Plug up the vacuum connection going to
the EGR with a golf-T.
If it passes emissions then remove all the EGR
related stuff.
If it fails, just unplug the T and plug back in
the way it was. No harm done that way.

Louis.

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Not always the smartest but certainly not dumb?

Actually removing the EGR should *reduce* the smoke.

Exhaust gas won't burn so the more oxygen in the cylinders means a better and hotter burn.