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Old 09-21-2009, 12:56 PM   #1
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Default How to remove stubborn crankshafts?

Hi guys - I went to service my RB Hobby 9 last night and had a hell of a time removing the crankshaft from the engine. It seemed like it was stuck on the bearings. I even had a hard time removing it with a rubber mallet.

What is the best way to remove these stubborn crankshafts? I don't want to pound on it too hard and risk damaging something.

Never seen one so stuck before.
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Old 09-21-2009, 07:04 PM   #2
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I've had good success by using something harder than a rubber mallet. I thread a long hex screw into the tip of the crank to protect it and the threads of the crank, then I'll tap the tip of the crank on a piece of wood or even metal. I don't give it a hard swing because you can't be too hard on the crank. The more blunt impact tends to break the "stiction" or corrosion that's preventing easy removal.
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Old 09-21-2009, 07:11 PM   #3
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Try heating up the engine block before removing it.
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Old 09-21-2009, 10:45 PM   #4
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Knock it out with a piece of wood. Just make sure to catch it it will not land on concrete.
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