TM 9-2320-289-20 4 - TM 9-2320-289-20 (W/ CHANGE-4), TECHNICAL MANUAL: UNIT MAINTENANCE MANUAL FOR TRUCK, CARGO, TACTICAL, 1-1/4 TON, 4X4, M1008; TRUCK, CARGO, TACTICAL, 1-1/4 TON, 4X4, M1008A1; TRUCK, UTILITY, TACTICAL, 3/4 TON, 4X4, M1009; TRUCK, AMBULANCE, TACTICAL,