Figure 7-25. Camshaft Bearing Installation

Figure 7-24. Governor Cup Assembly - TM-5-6115-585-34_131

TM-5-6115-585-34 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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TM5-6115-585-34 NAVFAC P-8-623-34 TO-35C2-3-455-2 TM-05684C/05685B-34 (12) Remove back plate (22) and gasket (23) by removing screws (19), screws (21) and lockwashers (20). (13) Camshaft Bearings. The camshaft bearings (25, 26 and 27, figure 7-21) should be replaced if clearance to camshaft is greater than specified, bear- ings show cracks breaks, burrs, excessive wear, or other defects. The camshaft to bearing clearance should be 0.0012 to 0.0037 inch. To check rear bear- ing (25) remove expansion plug (24) at rear of crank- case. b. Cleaning and Inspection. If a cam lobe has be- come slightly scored, dress it smooth with a fine stone. If camshaft is badly worn or scored, replace it. c. Installation. (1) Press new camshaft bearings into place. See figure 7-25 for proper placement. Press rear bear- ing flush with bottom of expansion plug recess. Press front bearing in flush with crankcase front surface so oil passages are aligned. Do not attempt to ream bearings, they are a precision type. After rear bear- ing is installed, insert a new expansion plug in re- cess, using sealing compound, and expand it into place with sharp blows at its center. (2) Install new gasket (23, figure 7-21) and back plate (22) with screws (19 and 21) and lockwashers (20). (3) Refer to paragraph 7-17 and install crank- shaft gear. (4) With engine laid on its side, install tappets (27, figure 7-21). (5) Install key (18, figure ?-21) on camshaft (15), press on gear (17) and install retaining ring (16). (6) Install camshaft assembly (15) in engine making sure tappets (26) are in place on push rods. Align timing marks on camshaft gear and crankshaft gear (see figure 7-26). Check gear lash (see figure 7-27). (7) Install oil base per paragraph 7-10. (8) Install crankshaft gear retaining washer (9, figure 7-21) and retaining ring (8) on the crankshaft. (9) Refer to paragraph 7-9 and install rocker arms. (10) Refer to paragraph 7-18 and install fuel NOTE injection pump. Expansion plug must not protrude from rear face of crankcase. (11) Refer to paragraph 7-14 and install gear cover. Figure 7-25. Camshaft Bearing Installation 7-26

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