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 REPLACEMENT 0133 00 REMOVAL (Continued) CAUTION Before removing cylinder assemblies, check the breaking torque of all cylinder base nuts attaching each cylinder assembly to the crankcase. This check is necessary to determine whether cylinder mounting studs have stretched. All stretched studs must be replaced. There are three different base nut wrenches. Cylinder base nut (box) wrench (1) (item 32, WP 0176) can be used with a torque wrench with no compensation of the torque wrench reading because the input and output of the wrench is aligned with the fastener to be tightened. (Not illustrated.) Torque readings must be calculated when base nut wrenches (torque wrench adapters) (2, 3) (items 4 and 5, WP 0176) are used except when used as in example A. Calculations must be made to compensate for the offset of the torque wrench to the fastener being tightened as in examples B and C. Use the wrench that gives the best fit for each cylinder base nut. Desired Torque Multiplied by Torque Wrench Length (a) Calculated Torque = Torque Wrench Length (a) Added to Effective Extension Length (b) a = Torque Wrench Length b = Effective Extension Length Example B Example C b b a a Example A: No Calculation Necessary 3 2 1 WP 0133 00-2