Cylinder Liner Lower Bore.

Figure 13-52. Cylinder Block Height Checking Location

Figure 13-53. Sleeve and Block Boring Dimensions 13-102

TM-5-6115-593-34 Generator Set Diesel Engine Driven Tactical Skid Mtd. 600 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 depth with dial indicator depth gauge. Always measure counterbore depth on ledge at the edge of liner bore. 3. Check depth at four equidistant locations. Ledge must not be "cupped" more than 0. 0014 inch (0. 036 mm). Depth must not vary more than 0. 001 inch (0. 03 mm) throughout counterbore circumference. 4. Counterbore must always be resurfaced if it slants downward toward the center or if dimensions do not meet standards. 5. Subtract counterbore depth from liner flange thickness to determine amount of shims and depth of counterbore cut that must be used to provide 0.004 to 0.006 inch (0.10 to 0.15 mm) liner protrusion; 0.007 inch (0.18 mm) shims are thinnest available. (d) The most accurate method of checking protrusion is as follows: 1. Install liner in block with proper number of liner shims beneath the flange. Shims are available from 0.007 to 0.068 inch (0.18 to 1.73 mm). Use cylinder liner hold-down tool. Tool should be spaced so even load is applied. 2. Use gauge block and check liner protrusion above the cylinder block at four equidistant points outside the bead. Add or remove shims beneath the liner flange as needed to reach 0.004 to 0.006 inch (0.10 to 0.15 mm) protrusion. 3. With lines installed, check for out-of- round. (2) Cylinder Liner Lower Bore. (a) Install a new cylinder liner in the block without packing rings or crevice seal. (b) Desirable clearance between liner and block should be as listed, but liner contact with block is permissible as long as it does not cause liner out-of-round. (c) If clearances do not fall within limits, recheck after counterboring; limits do not apply with cylinder head installed and tightened to operating torque. If clearance is not correct, check lower block packing ring bore inside diameter. (d) Lower liner bore concentricity should be checked with concentricity gauge. If a piston seizure has occurred or after counterboring the cylinder block, check the counterbore to lower cylinder liner bore concentricity. Liner bore should be concentric within 0. 005 inch (0. 13 mm) total indicator reading. (3) Main Bearing Bore. (a) Assemble main bearing caps to block in 13-101

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