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#1
10-24-2004, 08:53 PM
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What size allen wrench on block heater plug?
My '84 300D does not have a block heater installed. Got one ready, but the plug in the block takes a huge allen wrench or something similar. Maybe 18mm, my 17mm is too small.
Anyone know the size and where I can get one? This job ought to be a real hoot. 
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#2
10-24-2004, 09:11 PM
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I was getting ready to post the exact same question, but you beat me to it.
 
__________________
Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section
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#3
10-24-2004, 09:51 PM
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I'm thinking I may want to install one for this winter too, so I am interested as well......
__________________
-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#4
10-24-2004, 09:55 PM
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19mm - I have the snapon Allen with a 4 foot breaker bar, and I couldnt get it out.
There are lots of posts on doing this. Mercedes would install them at the dealer within the first 3 months for free, but after that, I think that that plug just solidifies in the threads....I could not get mine out. Its not worth cracking the block trying to put in a block heater. I just keep my 300Cd in the garage. I tried a lower radiator hose heater, but it never worked quite right.
__________________
Current Stable: 1994 S500 v140, 210k miles, white with grey. Former Mercedes in the Stable: 1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now) 1984 300CD Turbo Diesel 150 k mi sold 1982 300D Turbo Diesel 225 sold 1987 300D Turbo Diesel 255k mi sold 1988 300 CE AMG Hammer 15k mi sold 1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020) 1992 500E 156k mi sold etc.
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#5
10-24-2004, 10:00 PM
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It's a real bear to get out. Yes, 19mm is the right size. I couldn't even get mine out with an impact wrench. I had the engine out of the car, finally 6' of breaker bar broke it loose.
__________________
'83 240D with 617.952 and 2.88 '01 VW Beetle TDI '05 Jeep Liberty CRD '89 Toyota 4x4, needs 2L-T '78 280Z with L28ET - 12.86@110 Oil Burner Kartel #35 http://i16.photobucket.com/albums/b1...oD/bioclip.jpg
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#6
10-24-2004, 10:16 PM
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With the starter out it appears it can be gotten to from the bottem with the car up in the air a few feet. I'm hoping that with my car being from Texas, it hasn't been subjected to as extreme conditions and might not be quite as "stuck"
__________________
Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section
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