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#1
12-02-2006, 01:31 AM
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Freeze Plug Wrench
Does anyone know the size of allen socket I would need to remove the freeze plug from my 240D engine. I want to install a block heater that I already have. I don't have an allen socket large enough and it is easier to ask someone who knows rather than experiment until I come up with the right one.
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83 W123 240D 76 300D, "Lil Yellow Car" 1978 Cessna 172N 180 HP Mod "If life ain't fun, I'm not interested"  The important things are those that you learn after you know it all. Chip Foose  Build a better mousetrap and you will REALLY infuriate corporate america. 
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#2
12-02-2006, 01:51 AM
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My correction. I guess they are not really freeze plugs. I am referring to the screw in plugs on the right side of the block that you take out to install the block heater.
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83 W123 240D 76 300D, "Lil Yellow Car" 1978 Cessna 172N 180 HP Mod "If life ain't fun, I'm not interested" The important things are those that you learn after you know it all. Chip Foose Build a better mousetrap and you will REALLY infuriate corporate america.
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#3
12-02-2006, 02:03 AM
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Use the search function...
...that's what it's for!
 If you search on "block heater allen" you will come up with many threads, including What size allen wrench on block heater plug? and that thread has several posts that say the plug uses a 19mm Allen wrench. The posters also say that, after 20 years or so, the plug is almost impossible to get out. But try anyway, maybe you will get lucky.
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 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#4
12-02-2006, 06:21 AM
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they will come out. i have had my indie install a couple of block heaters in older cars. 123s. you need a 3/4" drive breaker and probably some heat and a pipe to extend the bar. they are tough but they can be had! oh yeah, you will want the car on a lift too. probably not a do it yourself thing. it must be done from below.
the plus is that if they know what to bring to bear on the problem ahead of time and dont spin their wheels on it it shouldnt take too long to do. tom w
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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.
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