If the 2 tabs on the tub drive are gone, you will have to replace the tub drive sleeve & brake assembly + tub block. 1st remove the cabinet and tub, tip the washer back, remove the pump & motor, remove the 3 bolt that hold the transmission in place and the trany out, next turn the plastic clutch paw to releave pressure on the brake & pull down & out, Replace the whole Brake assy & Tube it also comes with a new clutch. Don't forget to replace the block. It is pretty simple. If you need some video help summons my main Man on this JW Webster he is a great help and has a wonderful video collection.