Anybody know how to take out thermal hopper crankshaft?

aungmyatoo Sun Apr 14, 2013 5:58 am

I have already ruined 2 thermal hopper by trying to take out crankshafts.

First method; hammer down the crankshaft. As the crankshift tip is longer and smaller in diameter, it will bend by hammer down.

Second method; I fixed the crankcase on wooden table with 4 screws and lifter up the driveplate hoping it will come off. But it didn't rather the crankcase crack and broken off

Now, there is no way I can think of to take out thermal hopper crankshaft from its case. Any idea from experts?

**Cribbs74** Sun Apr 14, 2013 9:03 am

I have done it. Usually I screw a nut on the shaft and hammer straight down. Use a smaller hammer or even better use a small rawhide mallet. The drive plate usually pops off in 1-2 taps.

The reason for the nut is so you have a larger surface area to tap against and it protects the threads.

Sorry you ruined your cranks.

Ron

aungmyatoo Mon Apr 15, 2013 7:38 am

thank Ron for your suggestion.

ian1954 Mon Apr 15, 2013 2:33 pm

I always use a vice. It is less likely to damage the crankshaft than a misguided hammer blow.

In this instance the crankshaft was already damaged and seized in the crankcase.

https://youtu.be/KqWsR5pgOqg

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Anybody know how to take out thermal hopper crankshaft?

Anybody know how to take out thermal hopper crankshaft?

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Re: Anybody know how to take out thermal hopper crankshaft?

Re: Anybody know how to take out thermal hopper crankshaft?