b. Remove

9-14. PUSH RODS AND FOLLOWERS MAINTENANCE

Figure 9-13. Removal and Replacement of Push Rods and Followers

TM-9-6115-604-34 Generator Set Diesel Engine Driven Tactical Skid Mtd 5 Kw. 1 Phase-2 Wire 1 Phase -3 Wire 3 Phase -4 Wire 120. 120/240 and 120/208 Volts Manual
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TM 9-6115-604-34 NAVFAC P-8-633-34 (6) Visually inspect the followers (12 and 13) for cracks. (7) Repeat steps (2) through (6), above, for each cylinder. (8) Replace all defective parts in accordance with steps b through d, below. b. Remove. (See Figure 9-13.) (1) Separate fuel block connections (13, Figure 6-35) from brackets (16) by removing hexagon head capscrews (11) and lockwashers (12). (2) Remove the rocker arms in accordance with paragraph 9-5. Match-mark and withdraw the push rods (1 and 2, Figure 9-13) from the cylinder head bores. (3) Remove the capscrews (3 and 4), lockwashers (5), flat washer (6), and remove the cover (7) and gasket (8).Discard the gasket. (4) Match-mark the shaft (14) to the cylinder number, remove the capscrews (9), flat washers (6), and the follower and shaft assembly. (5) If damaged, remove the bushings (10) from the cylinder block (6) Match-mark the followers (12 and 13) to the cam follower shaft (14), remove the retaining rings (11), and remove the followers from the shaft. Discard the retaining rings. (7) Remove the cup plugs (15) from the cam follower shaft (14), and discard the plugs. (8) Remove the roll pins (1 6), press out the cam follower pin (17 or 1 9), and remove the cam follower rollers (18 or 20). c. Inspect and Repair. (See Figure 9-13 and Figure 9-14). WARNING Dry cleaning solvent PD-0, Type Ill, or equivalent, Is flammable, and moderately toxic to the skin, eyes, and respiratory tract Assure adequate ventilation. Skin, eye, and respiratory protection Is required to avoid Injury to personnel. WARNING Compressed air used for cleaning or drying can create airborne particles that may enter the eyes. Pressure shall not exceed 30 psi (207 kPa). Wearing of goggles Is required to avoid Injury to personnel. (1) Clean all parts in dry cleaning solvent PD-480, Type II, or equivalent, and blow dry with compressed air. (2) Check for bent push rods (1 and 2, Figure 9-13) using V blocks and a dial indicator. Replace push rods that exceed 0.063 inch (1.60 mm) TIR. Using an arbor press and V-block straighten acceptable push rods to within 0.025 inch (0.64 mm) TIR. (3) Check the ball-ends of the push rods for wear using Prussian blue compound and a new socket (21). Replace the push rods if the blueing patten does not show in at least 80 percent of the socket area. (4) Check the socket ends of the push rods for wear using Prussian blue compound and a new rocker arm adjusting screw (16, Figure 9-2). Replace the push rods if the blueing pattern does not show in at least 80 percent of the socket area. (5) Check the cam follower shafts (1 4, Figure 9-13) for cracks and surface imperfections using fluorescent magnetic inspection in accordance with MIL-1-6868. Replace any follower shafts that are defective. (6) Check the follower shafts (1 4) for coring and grooving. Replace any shaft scored or grooved over 0.002 inch (0.05 mm) in depth. (7) Check the outside diameter of the cam follower shafts (1 4) for wear and out-of-round. Replace the shafts if the minimum diameter is not in accordance with Table 1 -4. (8) Check the followers (12 and 13) for cracks in accordance with step (5), above. Replace any followers that are defective. 9-26

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