think there is a join at the rear drums so you may not have to remove rear brakes,make sure they are nice and free in the guides at the ends of the rear axle,they click into plastic guides, and the adjuster is well lubricated,also on the rear axle,this may be tight to remove at first(bad for seizing)think it is a 12mm nut,get these at a motor factors,pretty cheap parts for this,good luck
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