TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 4-12. FUEL PUMP REPLACEMENT (Cont) c. d. Cleaning/inspection (1) Clean all parts with fuel oil. WARNiNG Compressed air used for cleaning purposes will not exceed 30 PSI. Use only with effective chip guarding and personal equipment (goggles/shieid, gloves, etc.). (2) (3) (4) Dry all parts with compressed air. Inspect drive gear and drive shaft for scoring, burrs, or wear. Inspect driven gear assembly for scoring, burrs, or wear. NOTE Any slight damage on fuel pump body and pump body cover sealing surfaces may result in pressure leaks. (5) Inspect fuel pump body and pump body cover carefully for scratches, nicks, or burrs. (6) inspect relief valve for scoring or burrs. Assembly (1) Lubricate oil seals (20) with a thin coat of clean engine oil or vegetable shortening. NOTE Install new oil seals with seaI lips facing each other. Refer to illustration on right. (2) Support fuel pump body (8) on wood blocks. Using installer (24), install inner oil seal (20) into fuel pump body (8). (3) Using adapter (25), install outer seal (20) into fuel pump body (8). (4) Lubricate outside diameter of relief valve (18) with clean engine oil. Insert valve into fuel pump body (8) with hollow end of valve facing outward. 4-42 Change 1