2-38. Water Pump Repair

TM 9-2815-237-34 · Chapter 2 — Engine Maintenance

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)
                                                     Equipment Conndition
    Materials/Parts                                     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).