TM 9-4310-397-14(g)Measure cylinder liner as directed in step (h) and compare with piston measurement. Piston SkirtDiameter Specifications.1Dimension (B) bottom of skirt 0.74 in. (19 mm) from bottom of piston.2Dimension (A) 4.188 - 4.189 in. (106.38 - 106.40 mm).(h)Measure piston to liner clearance.1Put piston in matched liner with piston "front" and liner "front" aligned. Move piston down until bottom edge of piston skirt is 1.00 in. (25.4 mm) (C, Figure 6-83) above bottom of liner. Use a feeler gauge to measure distance (d)between piston skirt and liner 90° to piston pin bore. Record themeasured distance (D). Piston to liner clearance (measured at bottom of piston skirt) 0.003 - 0.005 in. (0.08-0.14 mm).Figure 6-83. Piston Clearance2Turn piston 90° in liner. Use a feeler gauge to measure distance between piston skirt and liner 90° topiston pin bore. Record the measured distance. The difference between the two measurementssteps (1) and (2) is the distance the liner is out of round at the bottom of the liner.3Pull piston out of liner. Put piston in liner upside down with piston "front" and liner "front" aligned.Move piston so bottom edge of piston skirt is 1.00 in. (25.4 mm) (E, Figure 6-84) below top of liner.Figure 6-84. Piston Clearance6-67
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