Then with a long socket wrench (my torque spanner) the nut unloosened very slowly.
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Then with a small screw driver you can prise the inner washer out, it is not stuck just fiddly to get into. Be careful, it is also very hot 😳
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The one side of the gearbox the coupling just slid off easily but this one was a little tighter. So used a 3 legged puller and with out much force it came off quite easily.
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