4-14. REPLACE/INSPECT/REPAIR PUMP CASING

TM-10-4320-309-14 Pump Unit Centrifugal Self-Priming 125 GPM Class 3 Diesel-Driven Army (NSN 4320-01-247-7127) Marine Corps (NSN 4320-01-313-9442) Manual
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TM 10-4320-309-14 TM 4320-14/1 4-14. REPLACE/INSPECT/REPAIR PUMP CASING This task covers: a) Removal c) Repair b) Inspection d) Installation INITIAL SETUP Tools Equipment Condition Tool Kit, General Mechanics (Item 2, Para Appendix B, Section III) 3-16 Outlet air sound enclosure assembly Shop Equipment Automotive Maintenance removed. and Repair: Field Maintenance, Common No. 2 (Item 4, Appendix B, 3-17 Check valve assembly and suction Section III) discharge pipes removed. Hook Pick (Item 16, Appendix B, 4-11 Volute assembly removed. Section III) Hex Key Drive (Item 11, Appendix B, 4-12 Impeller, shaft seal, shaft adapter Section III) removed. 4-13 Wear plate removed. Materials/Parts 4-19 Recoil starter assembly removed. Cloth, Lint-free (Item 11, Appendix E Section II) REMOVAL: a. Completely drain the pump by removing pipe cap (1), pipe nipple (2), and bushing adapter (3). b. Remove pipe plug (8) and bushing adapter (9). c. Remove four self-sealing screws (6). d. Separate pump casing (4) from engine. INSPECTION: a. Wipe surface areas with dean, dry cloth. When using compressed air, always use chip guards and wear eye protection. b. Inspect all surfaces and edges for cracks. c. Blow out suspicious looting and difficult to reach areas with compressed air to remove deposits and reveal flaws. d. Inspect threaded inserts for damaged threads. 4-25

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