TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 CYLINDER ASSEMBLY REPAIR 0135 00 INSPECTION (Continued) 4. Measure cylinder (1) bore at room temperature. a. Take first set of measurements at points A through E. Measure diameter approximately parallel to line of valves. b. Take second set of measurements 90 degrees to first set. c. Average the measurements. d. If head end average measurements exceed flange end average measurements, replace cylinder. NOTE Cylinder bores may taper slightly (smaller at head end) at room temperature. The tapered section expands and is essentially straight at operating temperature. 5. Compare measurement sets. a. At each point (A through E), measurements must be within 0.003 inch (0.0762 mm) of each other. If the difference exceeds 0.003 inch (0.0762 mm), the cylinder is out-of-round and must be replaced. 1 b. Compare the measurements to limits in the following table. If cylinder is out of limits, replace cylinder. Cylinder Bore (average of A-E) Size and Fit of New Parts inches (mm) Wear Limits inches (mm) Standard bore diameter 5.7510 (146.0754) 5.7530 (146.1262) 5.7600 (146.304) 0.0100 (0.25) oversize bore 5.7610 (146.3294) 5.7630 (146.3802) 5.7700 (146.558) 0.0200 (0.50) oversize bore 5.7710 (146.5834) 5.7730 (146.6342) 5.7800 (146.812) 0.0300 (0.762) oversize bore 5.7810 (146.8374) 5.7830 (146.8882) 5.7900 (147.066) 0.0400 (1.01) oversize bore 5.7910 (147.0914) 5.7930 (147.1422) 5.8000 (147.32) Maximum out-of-round 0.0020 (0.0508) 0.0030 (0.0762) WP 0135 00-8