A dish rack is supported for vertical movement relative to a dishwasher tub between lowered and raised positions. To raise the rack, spring biased locking levers provided on side walls of the dish rack are pivoted to cause wing members of the locking levers to release locking tabs, extending in a cantilevered fashion from locking straps secured to the rack, from locking openings provided in adjuster arms which are fixed vertically relative to the tub, thereby disengaging the locking straps from the adjuster arms to enable the rack to be lifted to the raised position. To lower the rack, the locking levers are again pivoted to reposition support members of the locking straps into positions offset from the adjuster arms, thereby enabling the rack to be guided to the lowered position where the locking tabs automatically engage the adjuster arms.