TM 9-2320-361-20 11-40. PERSONNEL HEATER AIR VENT REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) All TM 9-2320-361-10 MATERIALS/PARTS TM 9-2320-361-20P Four lockwashers EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). a. Removal 1. Loosen clamp (4) and remove supply hose (1) from air vent (9). 2. Loosen screw (8) and remove cable (5) from shaft (2) and clamp (3). 3. Remove two nuts (6), lockwashers (7), screws (12), lockwashers (11), and air vent (9) from fire- wall (10). Discard lockwashers (7) and (11). b. Installation 1. Install air vent (9) on firewall (10) with two new lockwashers (11), screws (12), new lockwashers (7), and nuts (6). 2. Insert cable (5) through clamp (3) and install on shaft (2) with screw (8). 3. Install supply hose (1) on air vent (9) with clamp (4). Tighten clamp (4). FOLLOW-ON TASK: Adjust control cable (para. 11-41). 11-77