TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM9-2815-202-34 4-40. FUEL INJECTOR ASSEMBLY (4) Injector plunger and bushing REPAIR (Cont) CAUTION Make sure high pressure bleed hole in side of bushing is not plugged. If hole is plugged, fuel oil will leak into engine and cause oil dilution. NOTE Keep plunger and bushing together as they are matched sets. Keep parts of each injector assembly together. Wash with cleaning solvent and dry with compressed air. c. Inspection/Measurements (1) Follower (a) (b) Measure distance between top of follower (8) and slot. Dimension must be 1.645 to 1.649 inches. Inspect stop pin groove in side of . follower to make sure it is smooth and not damaged. Do not reuse follower if there is more than 0.002 inch wear on top or there is other visual damage or wear. (2) Follower spring (a) (b) (c) Examine outside diameter of follower spring coils (7) for wear caused by rocker arms contacting coils. Replace if worn. Inspect follower springs for rust, pitting, nicks, or notches in coils, broken coils, broken coil ends, and notches under coil ends. Check spring tension with spring tester. Replace spring when a load of less than 78 Ibs will compress it to 1.028 inches. 4-226