TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 LEGEND FOR FIGURE 13-28 1. Screw 9. Hose 16. Clamp 24. Sleeve 31. Pad 2. Washer 10. Tube 17. Screw 25. Insert 32. Housing 3. Washer 11. Hose 18. Dataplate 26. Bearing 33. Stude 4. Nut 12. Nut 19. Housing 27. Seal 34. Nut 5. Clip 13. Seal 20. Nut 28. Wheel 35. Gasket 6. Elbow 14. Screw 21. Impeller 29. Seal 36. Housing 7. Coupling 15. Washer 22. Ring 30. Shield 37. Tube 8. Clamp 23. Plate Section IV.  WATER PUMP 13-17. REPAIR.    There  are  two  types  of  water  pumps used  on  the  engine  assembly,  All  generator  sets  after engine  serial  number  10605201  are  equipped  with  the new  style  pump  incorporating  an  idler  assembly.    This section provides disassembly and repair instructions for both types of water pumps. a. Water Pump Without Idler Assembly. (1)   Disassembly.  Prior to disassembly, remove the  water  pump  from  the  engine  assembly in  accordance  with  the  Operator/Crew  and Organizational Maintenance manual.  Refer to figure 13-29. (a)   Disassemble the water pump by removing five screws (13), lockwashers (14), cover (41), and gasket (30). (b)   Pull   impeller   (29)   with   puller   and   pull sheave hub (19) from pump drive shaft (25).    Remove  three  screws  (16)  and washers   (17)   to   disassemble   sheave hub assembly. (c)   Remove snap ring (21) from pulley end of body (15) and press out shaft spacer (23) and bearings (22).  Remove carbon face seal (26) and seat (28) from pump body (15); discard seal and seat. (d)   Press shaft (25) from bearings (22) and spacer  (23);  only  if  damaged,  remove retaining ring (24) from groove in shaft. (2)   Repair.  Proceed as follows: (a)   Inspect    bearings    for    rough    or    worn races,  or  damaged  shield.    Replace  if necessary. (b)   Inspect impeller and cover for cracks or corrosion that could interfere with circulation.  Replace if necessary. (c)   Measure  internal  clearances  and  press fits in accordance with tabulated data in Chapter 1.  Replace parts as necessary. (d)   Inspect  water  pump  mounting  parts  for cracks.  Replace as necessary. (3)   Reassembly.    Reassemble  the  water  pump as follows: (a)   Place  bearing  retaining  ring  (24)  over long end of water pump drive shaft (25); press  into  first  ring  groove  with  a  piece of tapered steel tubing. (b)   Pack  bearings  (22)  full  of  grease,  MIL- G-3545. 13-56