ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 5-87 6 Measure piston skirt-to-cylinder liner clearance 90 degrees (1/4 turn) away from piston pin bore.  Record measured clearance.  Compare piston skirt-to-cylinder liner clearance with specifications given in Table 5-11. 7 Turn piston 90 degrees (1/4 turn) in liner.  Measure piston skirt-to-cylinder liner clearance 90 degrees (1/4 turn) away from piston pin bore.  Record measured clearance.  Compare piston skirt-to-cylinder liner clearance with specifications given in Table 5-11. 8 The difference between clearances in steps 3 and 4 is the amount cylinder liner is out- of-round at bottom of cylinder liner.  Compare cylinder liner out-of-round with specifications given in Table 5-11. 9 The difference between clearances in steps 6 and 7 is the amount cylinder liner is out- of-round at bottom of cylinder liner.  Compare cylinder liner out-of-round with specifications given in Table 5-11. 10 The difference between clearances in steps 2 and 6  is the amount cylinder liner is tapered.  Compare cylinder liner taper with specifications given in Table 5-11. (i) Measure cylinder liner flange thickness.  Cylinder liner flange thickness should be 0.2371 - 0.2385 in. (6.022 - 6.058 mm).  Replace piston and cylinder liner if cylinder liner flange thickness exceeds specifications. Table 5-10.  Cylinder Liner Thickness Specifications. Item Specification Cylinder Liner Thickness 0.2313 - 0.2510 in. (5.875 - 6.375 mm) Packing Step Dimension 0.07947 - 0.09002 in. (2.0185 - 2.2865 mm) Table 5-11.  Piston and Cylinder Liner Specifications (Continued). Item Specification Piston-to-Liner Clearance (Measured at Bottom of Piston Skirt) for Turbocharged Engines 0.003 - 0.006 in. (0.08 - 0.15 mm) Maximum Permissible Cylinder Out-of- Round 0.002 in. (0.05 mm) Maximum Permissible Cylinder Taper 0.002 in. (0.05 mm) Liner Height Above Block 0.001 - 0.004 in.(0.030 - 0.100 mm)