backhoe boom circuit

boom circuit

boom raise

boom raise control valve housing

boom raise cycle time

boom raise cylinder

boom raise cylinder lock valve

boom raise movement

boom raise operation

boom raise pressure

boom raise pump oil

boom raise relief valve

boom raise section

boom raise stem

crutch boom [= boom rest

bed raise circuit

boom socket [= boom step]

cargo boom {single travelling boom}

alternation current circuit {= AC circuit}