TM 9-2320-361-20 12-19. TANK BODIES MAINTENANCE INDEX (Contd) PARA. TITLE PAGE NO. NO. 12-49. Water Tank Manhole Cover Maintenance (M50A3) 12-80 12-50. Delivery Pump Front Propeller Shaft Maintenance 12-81 (M50A2) 12-51. Delivery Pump Front Propeller Shaft Maintenance 12-82 (M49A2C, M50A3) 12-52. Delivery Pump Rear Propeller Shaft Maintenance 12-84 (M50A2) 12-53. Delivery Pump Rear Propeller Shaft Maintenance 12-86 (M49A2C, M50A3) 12-54. Speed Control Cable Maintenance 12-88 12-55. Tank Bodies Front Splash Guard Replacement 12-90 12-56. Tank Bodies Upper and Lower Rear Splash Guard 12-92 Replacement 12-20. DISCHARGE VALVE REPLACEMENT (M49A2C) This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS EQUIPMENT CONDITION M49A2C Parking brake set (TM 9-2320-361-10). MATERIALS/PARTS Fuel tanks drained (TM 9-2320-361-10). Two gaskets GENERAL SAFETY INSTRUCTIONS Eleven locknuts Keep fire extinguisher nearby when working on fuel REFERENCES (TM) tank trucks. TM 9-2320-361-10 TM 9-2320-361-20P 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 Both discharge valves are removed the same way. a. Removal 1. Remove two locknuts (10), plates (9), U-bolt (7), and discharge valve cable (8) from discharge lever (5). Discard locknuts (10). 2. Remove locknut (6), screw (4), and lever (5) from discharge valve (16). Discard locknut (6). 12-30