5-4. MAINTENANCE OF PUMP ASSEMBLY.

CHAPTER 5 DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

TM-10-4320-318-14 Centrifugal Pump Unit Water 125 (NSN 4320-01-156-3873) Model No. 2x2 SP/52109 EIC: ZHT Manual
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TM 10-4320-318-14 5-4. MAINTENANCE OF PUMP ASSEMBLY. This task covers: a. Disassemble c. Repair b. Inspect d. Assemble INITIAL SETUP Tools Equipment Conditions General Mechanics Tool Kit Engine and pump assembly is removed (para.4-20). (Item 1, Appendix B) Parts/Materials Anti-seizing Tape (Item 11, Appendix E) O-Rings (TM 10-4320-318-24P) Shims (TM 10-4320-318-24P) Lockwashers (TM 10-4320-318-24P) Lubricant (Item 7, Appendix E) a. DISASSEMBLE (Figure 5-1). (1) Remove drain valve (l), pipe nipple (2), elbow (3) and nipple (4) from the pump drain. (2) Remove nuts (5), lockwashers (6), and pump casing cover (7). (3) Remove capscrew (8) and washer (9). WARNING Use care in removing impeller. Shaft and spring is under tension. Spring may release tension causing injury to personnel. (4) Unscrew impeller (10). (5) Remove shims (11 and 12). (6) Remove shaft seal (13) in following order: spring retainer (14), spring (15), rotating seal (16), stator (17), and seal spring retainer (18). (7) Remove adapter shaft (19) from shaft of engine (20). (8) Remove key (21). (9) Remove screws (22), wear plate (23), and O-ring (24). (10) Remove socket head capscrews (25), and pump casing (26). (11) Remove O-ring (27) from pump casing cover (7). (12) Remove plug (28) and reducer (29). 5-2

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