TM 9-2320-361-20 12-48. WATER TANK MANHOLE COVER REPLACEMENT (M50A2) This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) M50A2 TM 9-2320-361-10 MATERIALS/PARTS Twelve cotter pins Two gaskets TM 9-2320-361-20P EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). a. Removal 1. Remove two cotter pins (6) and pin (7) from center brace (10) and yoke (5). Discard cotter pins (6). 2. Raise yoke (5) and remove cover (1) and gasket (9) from tank body (8). Discard gasket (9). 3. Remove two cotter pins (2), pin (3), and handle (4) from yoke (5). Discard cotter pins (2). 4. Remove eight cotter pins (14), four pins (15), two eyebolts (12), nut (13), and yoke (11) from center brace (16) and two supports (17). Discard cotter pins (14). 5. Remove cover (20) and gasket (19) from interior of manhole (18). Discard gasket (19). 1. Install new gasket (19) and cover (20) in manhole (18). 2. Install yoke (11) on center brace (16) and two supports (17) with eight new cotter pins (14), four pins (15), two bolts (12), and nut (13). 3. Install handle (4) on yoke (5) with pin (3) and two new cotter pins (2). 4. Install new gasket (9) and cover (1) on tank body (8). 5. Install yoke (5) on center brace (10) with pin (7) and two new cotter pins (6). 12-78