RE: O.S. .46 AX - bad rear bearing - metal shards... (pic heavy)
I do not totally agree with the methods used in the video. It is not possible to heat a engine evenly with a gas flame or heat gun and this can cause the casing to warp. The best method for me is the kitchen stove. Pre-heat it to 180 C (356 F) and heat the casing for 10 minutes.