TM 9-2320-209-20-3-3 18-74. EXHAUST BLOWER ASSEMBLY REMOVAL AND REPLACEMENT (TRUCKS M109A2 AND M109A3). TOOLS: Flat-tip screwdriver SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Removal. FRAME 1 1. Unplug blower motor cable connector (1) from receptacle (2). 2. Using screwdriver, unscrew and take out two screws (3). GO TO FRAME 2 18-393