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Old 11-10-2007, 10:23 AM
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Join Date: Oct 2005
Location: Dallas, TX (Addison)
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how to turn engine by hand

how does one turn an engine over by hand? what is the correct direction? so many warning here about NOT turning it backward? is clockwise to MY right when standing in front of the car or from the perspective of the engine in the car?

i know i sound stupid so don't flame me please!

R Martin
Dallas, TX (Addison)

86 560SEL, 128K
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Old 11-10-2007, 12:11 PM
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Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,853
Yes, you turn the engine the same way it turns during operation. You do it by using a socket that fits on the nut in the middle of the crankshaft dampner and turn with a breaker bar or ratchet. You may need a short socket extension to get the proper clearance.
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Old 11-10-2007, 04:16 PM
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If you have a gasoline engine, you can remove all spark plugs while using extreme caution to prevent any crud from falling thru the holes into the cylinders. Since it's near impossible to get a socket on the crank bolt of a MBZ engine without removing a lot of parts, it's possible to rotate the engine by turning the power-steering pump as long as the the spark plugs have been removed - no compression.
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Old 11-10-2007, 04:17 PM
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Location: Cicero, Hamilton County, Indiana about 30 miles north of downtown Indianapolis
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Yes Kestas, but he doesn't know

That is why he is asking. He obviously does not know which way the engine turns when running. So the correct answer is clockwise as it looks to you when you are standing in front of the engine.
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Old 11-10-2007, 05:04 PM
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Join Date: Oct 2005
Location: Dallas, TX (Addison)
Posts: 270
thank you all

my mechanic friend who works on mercedes came by and tried to turn it using the belts. he couldn't do it. said doesn't mean it's locked up but he can usually turn it by the belts.

R Martin
Dallas, TX (Addison)

86 560SEL, 128K
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