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post #2 of (permalink) Old 31st August 2014
Technical Supremo

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Re: Rear wheel bearing fitting..right or wrong..

Talk about taking a sledge hammer to crack a walnut.

Using a cold chisel is definitely not a safe means of removing the bearing - there is high risk of either the chisel or bearing chipping and fragments flying all over the place. Oh then he has to use a welder when he could have used a decent punch or even an appropriate sizes socket to knock it out. What he did not reveal was that by using the welder in induced heat into the bearing thus helping free it from its housing.

If you look closely when he is using the torque wrench the nut doesn't move at all. In other words the nut was already torqued beyond it's limit.

The differential in temperatures of around 200 C between the drum and the bearing definitely runs the risk of inducing metal fatigue. Then of course any temper in the metal of the drum will have been affected by heating the drum in the oven - plus the risk of the drum being distorted out if shape.

For the price of a welder and the energy used in the oven he could have paid someone with a press 10 ten times over.

All I can say is "Glad he ain't working on my car"
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