Komatsu Dump Truck HM300 Factory Service & Shop Manual Price listed in US Dollar: $55.00 Leave this field blank Complete workshop repair service manual with electrical wiring diagrams for Komatsu Dump Truck HM300-1, HM300-1L, HM300-2, HM300-2R, HM300-3, HM30 Read more about Komatsu Dump Truck HM300 Factory Service & Shop Manual