i cant find my earlier post on the subject its lost in the search function.. but

im adjusting the valves now.. from what people have told me DG's tutorial is backwards
.. hold the bottom one as i loosen the top one.. check and then what..

I remember reading that last week as well,but I think it was just a minor difference like which was used to adjust and which was used to lock,Johnny

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85 300sd SOLD ,85 745i,95 740i,1972 Suburban,1938 International

The top nut that contacts the rocker arm is the locknut and the bottom one is the adjuster. When you turn the adjuster, if the big collar that holds the valve spring turns, you'll have to find a way to hold it in place or turning the nut won't make any adjustment. They probably won't all move, I think about half of my big collar nuts moved. I used channel locks to hold the big nut in place while I turned the adjusting nut. Make sure you tighten down the locknut when re-checking the clearance.

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Seth

1984 300D 225K
1985 300D Donor body
1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!!
1980 300SD 311K My New Baby.
1979 BMW 633csi 62K+++? Dead odo

ok i got it where i want it... now.. how do i tighten it.. do i bring the lower nut up to the big nut?

WRONG! Well I have done tons of valve adjustments I dont understand that comment.

Loosen the top nut, clockwise the bottom nut to gain feeler gauge clearance, lock the top nut back. I can get the valves adjusted perfectly every time.

So again I dont understand your comment.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

ive got it but im stuck on an intake valve.. the damn adjuster nut wont allow the wrench to go on so i can turn it.. its frign awkward.. im selling this damn car.. i hate it

What do you mean you cant get the wrench on the nut? Are you using a set of straight wrenches?

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

im using the ones i bought from you.. i got it tightened.. after i had to lay on the engine and do everything in like very very small increments

Ok those are the right tools. People usually have trouble with the exhaust valves. The first time I did a MB it took me a couple of hours now I can do it from start to finish in about 30 minutes. Including removing and replacing the valve cover. It never fails though to get one or two valves that are "problem child" ones.

Which cylinder is giving you the most trouble?

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

i got it done.. it was number 3... and i didnt put the valve cover gasket on right.. and now my engine is covered in oil... the pedal doesnt feel right anymore.. ill clean up put the gasket on right then lube the linkages and if i dont like it im selling it.. im tired of a diesel

I've always used the bottom nut as the locknut and adjusted the top nut for clearance. Works every time.

did my first mb valve adjustment a few weeks back. had a heck of a problem with the those nuts.,

then try to adjust using the specail wrenches, was still a nighmare. after about 4 or 5 valve, used the wrenches to 'break' and tighten only.. used my fingers to adjust and then used fingers to hand tighten. after i made the nuts as tight as i could by hand, i used the wrenches. sure a lot easier.

next time all the valves will done using this method.

bob
1981 240d 180,000
1984 isuzu diesel 502,000

Valve adjustment OM 617 FYI.
http://www.peachparts.com/shopforum/showthread.php?t=107729

i want a 603 screw valve adjusting