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#1
03-14-2010, 03:32 PM
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220d valve adjustment question
on my 220d -72 bottom nut is 15mm top 14mm,,does the bottom locking nut loosen counterclockwise,im trying to turn it cccw to open but it wont.this is on intake valve that is very tight
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95 e320,87 sdl,79 300sd 
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#2
03-14-2010, 07:22 PM
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On my 73, both are 14mm and both loosen counterclockwise.
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1987 300TD; 166,000 mi/267151 Km - had to make room for the dog 1973 220D; mileage ?????? 1978 300D; 178,000
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#3
03-14-2010, 07:46 PM
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Actually they are both 14mm, the top one is just a tight fit.
You want to hold the top nut, and turn the bottom nut CLOCKWISE a bit, and then tighten the top nut down on the lower nut. Keep doing that until the valve gap is correct.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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#4
03-14-2010, 08:31 PM
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ill see if my 14 bent wrench will get on that nut,it gets on top nut fine ,but other offset 14 just doesnt want to get on,ill try some more,no chance they put a 15mm on buttom nut?
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95 e320,87 sdl,79 300sd
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#5
03-14-2010, 08:32 PM
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ill see if my 14 bent wrench will get on that nut,it gets on top nut fine ,but other offset 14 just doesnt want to get on bottom nut,ill try some more,no chance they put a 15mm on buttom nut?
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95 e320,87 sdl,79 300sd
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#6
03-14-2010, 08:34 PM
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Nope, they're both 14mm nuts, What is probably happening is that your wrench in hitting the top nut keeping it from going on the the bottom nut, thats why you need a thinner wrench, the correct Hazet wrenches are thinner than the average wrench.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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#7
03-14-2010, 08:51 PM
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I've experienced the same issue on my 123's. I don't remember which one is tight, but one of them definitely is tough to get a 14mm wrench on.
To loosen the lower nut(locking nut) turn clockwise. Then to adjust the valve clearance smaller turn the adjusting nut counter clockwise, and to make the gap bigger you turn it clockwise. I also find that when I tighten down the locking nut it tighten the gap so I typically turn the adjusting nut clockwise jsut a hair as I'm tightening the locking nut.
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Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#8
03-14-2010, 10:49 PM
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you know the wrenchs i have came from mercedes source,and probably are not thin enough,their is another thread going on now about someones elses problem as well.i guess i need to grind down wrench.thanks for all the info you guys are great
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95 e320,87 sdl,79 300sd
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#9
03-14-2010, 11:48 PM
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About 6 months ago there was another member useing the MS Wrenches had a similar problem.
I do not know why MS just does not make the wrenches right to begin with. I would take mabe less than 1 minute per Wrench (dipping it now and again in Water to keep it cool) on a Belt Sander to thin them.
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84 300D, 82 Volvo 244Gl Diesel
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