To gain a little cold weather smarts I located ,by luck, a block heater in a local yard .To pull the unit will take a 46 mm socket ,this is the same one you use for your tank filter.Gaining access to its new home was abit harder ,I still had a breaker bar but had to move up to the 3 ft one sitting in the corner of the garage.A 19mm hex BOLT WILL BE WHAT YOULL FIND IN YOUR WAY ,APPLY ELBOW GREASE HERE! .First try was a no go, then soaked with wd40 ,no go ,heat with a paint stripping gun was the last try with success .I have to believe this has been talked about before,the shear hate for that bolt was what finally did it ,a few choice cuss words as inspiration sometimes helps.I can now look like a professional diesel car owner in the winter time .

What? You mean you now have that built in sneer to your lips, the permanent dent in your forehead from a slipping wrench, the gashes in your elbows and the uncontrollable twitch when you see the temperature has dropped below freezing?

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

My fear was sending the 4 ft cast iron pipe throw the windshield if said wrench slipped even with the hood in its way of travel .The tap with a 5 pound hammer with the hex bolt in its position also could play a role in the bolt relaxing its grip .All the tricks before throwing up my hands and declaring surrender.

Dear sir, I applaud your perseverance! Well done. Must've felt great when you got that done.

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"The MB W123 is so bulletproof, you can drive them forever. Which is a good thing as it takes that long to get anywhere."
Betsie: 1984 W123 300D (hobby, 280k miles)
Myrla: 2001 Mazda Protege 2.0 ES 5spd (daily driver, 130k miles)
The Turd: 2007 Toyota Camry (wife's car, 118k miles)

Lucky. I gave up trying to remove the factory plug (brass?) from the block in the 1982 engine which I put in my 1985. I had the block heater from the 1985. I bought a huge allen wrench (17 mm?) that fit the plug, but even with heat, WD-40, and 3 ft cheater bar, plus hammering, it wouldn't budge. The engine was out at the time. Anyway, haven't had any trouble starting since the replacement engine has ~400 psig in all cyl.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans

Here is a thread from several years ago on removing the block plug.


THE Definitive Block Heater Coolant Plug Removal Thread

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Cursing vigorously is essential....but not as essential as a monstorously long breaker extension bar!

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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.