On the 6 cyl, M130 engine, the intake and exhaust valve adjusters are difficult to turn, due to lack of clearance for the 17mm wrench. Short of removing the manifols, would a 3/8" drive, 17mm crow's foot wrench turn the adjuster? Or is there a better tool?

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1970 280S M130 engine- good runner
1971 250 M130 engine- #2 rod bearing, gone
1971 280SE (blown engine,parts car)
1977 German 280S W116-only 33 years old

I went to the SK tools site and purchased a SK crowfoot 17mm flare nut wrench ($18.00+ shipping)
I will grind the 'flares' off. The wrench is good for 525 inch/lbs (or 43 foot/lbs).

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1970 280S M130 engine- good runner
1971 250 M130 engine- #2 rod bearing, gone
1971 280SE (blown engine,parts car)
1977 German 280S W116-only 33 years old

Those things can be a huge hassle. If they are really stuck you may have to remove the rocker and put a socket on the adjuster.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe

Chuck is right. For some reason my crowsfoot did not have a tight fit and slipped on 2 particularly tight ones. Had to remove the rocker and use a socket instead.

Oreo

The MB tool is an offset crows-foot so that the torque wrench will be directly over the center of the adjuster. Note that you are supposed to use one -- if they are too tight, replace, if too loose, they won't stay put, replace....

You CAN use a standard crowsfoot, but you will need to grind it down to eliminate any chamfer on the bottom of the working part -- the factory tool has has a recess ground in it to fit over the adjuster both to hold it in place and to get the flat part of the opening onto the nut flats. If you don't grind the wrench down flat, the part the actually contacts the flats won't be square, with the results that you wipe the corners off and have to resort to using a socket after removing the rocker.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!