TM 55-1930-209-14&P-21Figure 5-22. Water Pump Disassembly and Reassembly.a.Cleaning. Clean all parts except shaft and bearing assembly with cleaning solvent and dry thoroughly.b.Inspection and Repair(1)Inspect pump shaft and bearing for rough spots or excessive wear. If worn, replace shaft andbearing assembly.(2)Inspect impeller for cracks, breaks or excessive wear.(3)Inspect all hardware and threaded areas for damage.(4)Repair by replacement of defective parts.5-49 Water pump reassembly and installationa.Reassembly(1)Reassemble water pump assembly in the reverse sequence of disassembly procedure.(2)Before installing a new seal insert make sure counterbore in body is clean.(3)Press shaft and bearing assembly into pump body. Press against outer race of shaft and bearing assemblyuntil outer race of bearing is flush with pump body.(4)Lightly coat outside diameter of new seal with sealing compound (MIL-5- 45180). With face of the bodyand bearing outer race supported install seal by pressing on outer flange.(5)Support pulley end of shaft in an arbor press and press impeller on shaft. End of shaft must be flush withimpeller hub.(6)Place pulley on bed of an arbor press. Apply ram to impeller end of shaft until pulley is seated in itsoriginal position.(7)Install a new gasket and pump cover.5-61
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