TM 9-2320-361-20 12-53. DELlVERY PUMP REAR PROPELLER SHAFT MAINTENANCE (M49A2C, M50A3) This task covers: a. Removal c. Installation b. Inspection INITIAL SETUP: APPLICABLE MODELS EQUIPMENT CONDITION M49A2C, M50A3 Parking brake set (TM 9-2320-361-10). MATERIALS/PARTS Discharge tube cover removed (M50A3 only) (para. 12-46). Two keys Delivery pump front propeller shaft removed REFERENCES (TM) (para. 12-51). TM 9-2320-361-10 GENERAL SAFETY INSTRUCTIONS TM 9-2320-361-20P 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. 1. Remove setscrew (5) and intermediate shaft (6) from delivery pump rear propeller shaft (8). 2. Remove key (7) from intermediate shaft (6). Discard key (7). 3. Remove setscrew (3) and delivery pump rear propeller shaft (8) from delivery pump shaft (2). 4. Remove key (1) from delivery pump shaft (2). Discard key (1). Inspect U-joints (4) for wear or damage. Replace U-joints (4) if worn or damaged (para. 7-4). 1. Install new key (1) in delivery pump shaft (2). 2. Install delivery pump rear propeller shaft (8) on delivery pump shaft (2) with setscrew (3). 3. Install new key (7) in intermediate shaft (6). 4. Install intermediate shaft (6) on delivery pump rear propeller shaft (8) with setscrew (5). 12-86