ARMY TM 9-2815-259-24
AIR FORCE TO 38G1-125-2
MARINE CORPS 09249A/09246A-24
5-76
FIGURE 5-75. MEASURING PISTON RING GROOVE CLEARANCE.
(e)
Measure piston pin bore inner diameter. Piston pin bore inner diameter should be 1.6254 -
1.6258 in. (41.285 - 41.295 mm). If piston pin bore inner diameter exceeds specifications,
replace piston and cylinder liner, refer to paragraph 5.4.6, as a set.
(f)
Measure and record piston skirt diameter (1, Figure 5-76) 90 degrees off piston pin bore and
1.1 in. (28 mm) from bottom of piston (2). Piston skirt diameter should be 4.188 - 4.189 in.
(106.38 - 106.40 mm). If piston skirt diameter exceeds specifications, replace piston and
cylinder liner, refer to paragraph 5.4.6, as a set.
FIGURE 5-76. MEASURING PISTON SKIRT
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