Quick Answer The main pump on a Komatsu PC300-8 or PC350-8 is an HPV140 class unit, ordered under 708-2G numbers. The catch is that the -7 and -8 generations share this pump family and cross-list each other's numbers — in the market, 708-2G-00024 is quoted predominantly against the -7 machines (PC300-7, PC350-7, PC360-7), while 708-2G-00700 and 708-2G-00150 are listed for the -8 machines. On...