3.8.17 Rocker Ann Assembly Maintenance, Model 609-A.

Figure 3-34. V-Belt Tensioner Maintenance, Models 609-C and US636HCCD-1.

Figure 3-35. Rocker Arm Assembly Removal, Model 609-A.

TM-10-4320-344-24 Pump Assembly Water 600 GPM Model 609-A (NSN 4320-01-184-7494) Model 609-C (NSN 4320-01-261-6470) Model US636HCCD-1 Manual
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TM 10-4320-344-24 3.8.17 Rocker Ann Assembly Maintenance, Model 609-A. This task covers: 3 . 8 .1 7 . 1 R e m o v al 3.8.17.4 Assembly 3.8.17.2 Disassembly 3 . 8 .1 7 . 5 I n s t a l l a t i on 3 . 8 .1 7 . 3 R e p a ir INITIAL SETUP Tools Material/Parts (Continued) General Mechanic’s Automotive Gloves, Appendix C, Item 11 Tool Kit, Appendix B, Section Oil, Appendix C, Item 15 III, Item 1 Rags, Appendix C, Item 20 Tags, Appendix C, Item 31 Goggles, Industrial, Appendix B, Wire, Appendix C, Item 36 Section III, Item 2 Equipment Conditions Gun, Air Blow, Appendix B, Section III, Item 2 Cylinder Head Cover removed, paragraph 2.21.47. Torque Wrench, Appendix B, Section III, Item 2 General Safety Instructions Inside Micrometer, Appendix B, Do not work on equipment that is not Section III, Item 3 securely stabilized to prevent rolling o r s l i d i n g. Vernier Calipers, Appendix B, section III, Item 3 To prevent burns do not work on hot engine components. Allow engine to cool. Material/Parts Do not work on equipment without follow- Solvent, Dry Cleaning, Appendix C, Item 26 ing standard shop safety practices. 3.8.17.1 Removal. To prevent burns do not work on hot engine components. Allow engine to cool. Failure to obey this warning may result in serious personal injury. a. Tie a wire between number 1 rocker arm (Figure 3-35, 1) and number 12 rocker arm (2). Ensure wire is tied tightly enough to maintain tension on spacing springs when rocker arm assembly (3) is removed. When removing mounting nuts on rocker arm assembly, start at center nut and work outward. T O prevent accidental disassembly, loosen each nut a few turns at a time so that tension on valve springs is released gradually. b. Remove seven nuts (4) and flat washers (5) that secure rocker arm assembly (3) to cylinder head (6). c . Lift rocker arm assembly (3) from cylinder head (6). 3-82

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