TM-9-2815-237-34 HMMWV Engine Direct Support & General Support Maintenance Manual Download
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TM 9-2815-237-34 2-38. WATER PUMP REPAIR This task covers: a. Disassembly c. Inspection b. Cleaning d. Assembly INITIAL SETUP Tools Manual References General mechanic’s tool kit: TM 9-2815-237-34P automotive (Appendix E, Item 1) Materials/Parts Equipment Conndition Engine disassembIed into subassemblies Pipe sealing compound (Appendix B, Item 17) (para. 2-15). Sealing compound (Appendix B, Item 18) a. Disassembly NOTE Perform steps 1 through 3 if replacing water pump or damaged parts. 1. Loosen hose clamp (3) and remove bypass hose (4) from bypass hose adapter (5). 2. Remove 450 adapter (1) and heater hose nipple (2) from water pump (6). 3. Remove bypass hose adapter (5) from water pump (6). b. Cleaning Clean all components in accordance with para. 2-9. c. Inspection NOTE For general inspection instructions, refer to para. 2-10. 1. Inspect heater hose nipple (2), 45° adapter (l), and bypass hose adapter (5) for thread damage. Replace if threads are damaged. 2. Inspect water pump (6) for cracks and wear. Replace if cracked or worn. 3. Inspect threaded holes in water pump (6) for damage. Replace water pump (6) if threads are damaged. 4. Inspect bypass hose (4) for damage. Replace if damaged. 5. Inspect water pump rivet (7) for damage or looseness. Replace if damaged or loose. Apply sealing compound to replacement rivet prior to installation. d. Assembly 1. Coat threads on 45° adapter (1) and heater hose nipple (2) with pipe sealing compound and install in pump (6). 2. Coat threads on bypass hose adapter (5) with pipe sealing compound and install in water pump (6). 3. Install bypass hose (4) on bypass hose adapter (5) and secure with hose clamp (3). NOTE Perform step 4 if water pump was replaced. 4. Apply sealing compound to water pump rivet (7) and install in water pump (6). 2-144