Hello all,

I've searched the forum, but I could not find how much and which direction the lower nut on the valve has to turn to get the proper clearance. I have a 1981 300TDT. The two valves I've tried to adjust (an intake and an exhaust)won't let the feeler guage through no matter how much I turn. BTW I'm using the correct feeler guages, the valve cap(nut) is not turning and the lobe is not touching the rocker arm. I'm stumped and do not want to do any damage to the valve train.

Thanks as always,
Brad Uebelhor

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Brad
1981 300TD - daily driver
1963 Chevy II
2001 F-250 7.3 Power Stroke

The top nut turns to adjust clearance, the bottom nut is the jam nut.

May be useful.

W123. Adjusting Valves the easy way. Advise from a Mercedes master to an apprentice

Dave

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1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car

G'mornin',

Have a look at this website... http://www.**************.com/

This gentleman has a booklet and a "custom Bent" wrench set for sale there, and on e-Bay......mine is scheduled to arrive today.......I purchased the "Valve Adjusting Wrench Set".....mainly because I could not find a tool that I liked, for a reasonable price, anywhere else that I looked.......Phil does not list any on his website......and anything that has an MB Star stamped onto it is way to expensive for my taste......and out here in the boonies there isn't a Snap-On salesman worth a *&%*)(^%.....and MAC dosen't even have a local representative!!!

Luck to ya.....
SB

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Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG

My valve wrenches have "craftsmen" stamped in them. Seriously I have never used the bent wrenches to adjust the valves. I usually try to work around the injection lines, which is a pain, but when I did the valves a few days ago I pulled them off and it was a cakewalk.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Having all 3 correct wrenches makes the job a snap.

3? Is there one for the large flat nut on the valve too? I have never had any trouble with that one.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

i am looking at the set i ordered last year from perf prod(never been screwed by them) the one for the bottom is like a frying pan so it holds the bottom nut in place. looking forward to using them in a couple weeks.

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currently
[1981 300 td tdidi 165500 dark brown/palamino-Brownie-mine-3k miles of ownership
1983 240d 162+++ Anthricite grey w/ henna red interior and hella lights-wifes car-Red

the above two cars are for sale
and can be seen on the cars for sale thread here. pix also available.


240d-144+ Manilla Yellow w/ palmino interior-greasecar kit-Blondie-the college kids car

23" gt 21 speed still on original tires-still got the nubs
21" khs tandem