TM 9-2320-361-20 12-38. GATE VALVE REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS EQUIPMENT CONDITION M49A2C, M50A2, M50A3 MATERIALS/PARTS Eight locknuts Two gaskets REFERENCES (TM) TM 9-2320-361-10 TM 9-2320-361-20P Parking brake set (TM 9-2320-361-10). GENERAL SAFETY INSTRUCTIONS Keep fire extinguisher nearby when working on fuel tank trucks. WARNING Do not perform this procedure while smoking or within 50 feet of sparks or open flame. Fuel is flammable and can explode easily, causing injury or death to personnel and damage to equipment. NOTE Have drainage container ready to catch fuel. Both gate valves are removed the same way. 1. Remove four locknuts (9), screws (7), cover (6), and gasket (8) from gate valve (1). Discard locknuts (9) and gasket (8). Remove gasket remains from mating surfaces. 2. Remove four locknuts (2), screws (5), valve (1), and gasket (4) from manifold flange (3). Discard locknuts (2) and gasket (4). Remove gasket remains from mating surfaces. 1. Install new gasket (4) and valve (1) on manifold flange (3) with four screws (5) and new locknuts (2). 2. Install new gasket (8) and cover (6) on valve (1) with four screws (7) and new locknuts (9). 12-58