must be confident overhauling , repairing , fault finding and modifying mechanical devices and machinery including pumps , gearboxes , rotary equipment .
O O O B-SKILL I-SKILL I-SKILL I-SKILL I-SKILL I-SKILL I-SKILL I-SKILL I-SKILL I-SKILL I-SKILL I-SKILL O O O O O O O O
MD VB JJ NN , VBG , NN NN CC VBG JJ NNS CC NN VBG NNS , NNS , JJ NN .