TM 9-6115-604-34NAVFAC P-8-633-34(20)Recheck the crankshaft end clearance in accordance with steps (17) and (18), above.(21) Install the inspection covers in accordance with paragraph 9-37.CAUTIONSerious engine damage will result If the engine Is started before the lubrication system Isproperly filled and primed. Elapsed time between priming the lubrication system and startingthe engine shall not exceed 3 hours. If, for whatever reason, the engine cannot be startedwithin 3 hours after priming the lubrication system, repeat the entire priming procedure justprior to starting the engine.(22) Prime the lubrication system in accordance with the Operator and Organizational Maintenance Manual.9-23. CYLINDER LINERS AND SEALS INSPECTION.a.Remove the cylinder heads in accordance with paragraph 9-5.b.Rotate the crankshaft so that the piston is at BDC, and visually inspect the liner bore for scoring, grooving,erosion, or pitting. Replace any cylinder liner that shows defects over 0.003 inch (0.08 mm) in depth.c.Inspect the area near the top flange for evidence of cracking. Replace cracked liners.d.Check the liner bore for wear, taper, and out-of-round using a dial bore gage or inside micrometer. Replacecylinder liners that are worn larger than the limits specified in Table 1-4.e.Install the cylinder liner damps ST-1 267 and check the liner protrusion with gage block3376220 as follows (seeFigure 9-34):(1)Position the damps on the cylinder liner flange 180 degrees apart with the damp holes centered on thethreaded capscrews holes in the cylinder block. Install the cylinder damp bolts provided, and tightenevenly to 75 pound-feet (102 newton-meters).(2)Zero the dial gage of gage block 3376220 on the cylinder block surface. Be sure to hold the gage blockflat on the cylinder block surface while zeroing the gage.(3)Move the indicator to index on the outer flange of the liner (Figure 9-34). Holding the gage block flat onthe cylinder block surface, read the liner protrusion on the gage. Make three more measurements at 90degrees intervals around the liner flange.(4)If the liner protrusion is not in accordance with Table 1-4, or varies more than 0.001 inch (0.03 mm), checkthe liner in accordance with paragraph 9-24.f. If no further repairs are necessary, remove the liner clamps ST-1267 and install the cylinder heads inaccordance with paragraph 9-10.9-24. CYLINDER LINERS AND SEALS REPLACEMENT.a. Remove.(1)Remove the piston and connecting rod assemblies in accordance with paragraph 9-20.(2)Wrap the crankshaft journals (32, Figure 9-24) with clean paper strips, and tape in place. This will preventcrankshaft contamination during liner removal and liner bore cleaning operations.(3)Remove the cylinder liners (27) using liner puller 3375629 and puller plate ST-1 209-1.(4)Remove and discard the bottom (red) packing (28), top (black) packing (29), and crevice seal (30) from theliner (27).(5)Remove the shims (if present) and insert-ring (31) from the cylinder liner counterbore in the cylinder block(58).b. Inspect.(1)Inspect the cylinder liner bore in accordance with paragraph 9-23.(2)Clean any rust or scale from the outer diameter of the liner, and check for pitting caused by rust orcorrosion. Replace the liner if the underside of the flange is pitted to any extent. Replace the liner if theouter diameter in any area (other than the underside of the flange) is pitted deeper than 0.0625 inch (1.59mm).(3)Using an outside micrometer, check the thickness of the outer flange (A, Figure 9-35) at 90 degreeintervals. Do not include the bead on top of the liner flange when taking the measurement. Replace theliner if the flange thickness is not in accordance with the dimensions given in Figure 9-35.9-67
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