The car, 1984 300D Turbo.
I have set the adjustment in the steering box a year ago, and a year before that. Now I have to take up the slack again. Before you ask. Yes it turns CC to tighten. The lower and upper support joints are new within two years and other motion points have been checked and are snug.
Can anyone tell me where does the adjustment go?
Can the gears be wearing that fast?
What am I missing here.

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1984 300SD turbo 126
"My true love"

God made me an atheist and who am I to question His wisdom

Hmmmm....

On my 116.120 it is CCW to reduce slack in the steering gear...Robert

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Maybe you're not tightnening the locknut tight enough?

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1989 300E 144K

It is CCW to tighten, I doubt the gears are going that fast, it's kinda scary that they could be though.

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http://i106.photobucket.com/albums/m...73378_30-1.jpg

Reckon that "CC" is shorthand for "CCW?"

Well, yes they can go pretty bad quite fast, after setting CCW to tighten they loosen up a few moths later, the worm drive or whatever is in there gets worn.
I had no luck with one in my old '83 300D so finally found a low mileage one in a wrecking yard that fixed it up and it held for fine

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!

I have found that there is plenty of adjustment in the box. My 123 with well over 300K on the box steers so tightly its a little too sensitive. I don't know what your problem is but I'd just keep adjusting it til it won't adjust any more and not worry about it.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

How do you know when it won't adjust anymore?
Does it hit a stop?

yes.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

The spec calls for up to 25mm of free play as measured from the outside of the steering wheel. If you adjust it so there is less than 15-20mm of free play it WILL wear faster. People think there should be little or no free play but the fact is there is some designed into it. I don't have the shop manual in front of me but I recall the minimum is either 15 or 20mm.

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz

Mine is at max adjustment

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I didn't know that. I will loosten it up a bit I guess.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.