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ARMY TM 9-2815-255-24
AIR FORCE TO 38G1-95-2
MARINE CORPS TM 2815-24/4
FIGURE 3-132. Inspecting Cylinder Liner for Cracks
NOTE
Inspect block for cracks or erosion in O-ring packing area. Replace block if any of these defects
are found.
t.
Measure piston skirt (A, FIGURE 3-133) 90 degrees to piston pin bore and 0.74 inch (19 mm) from bottom of
piston (B). Record measurement. OD should be 4.188 to 4.189 inches (106.38 to 106.40 mm).
FIGURE 3-133. Measuring Piston Skirt
u.
Measure piston to liner clearance as follows:
(1)
Put piston (without rings) in matched liner with piston FRONT and liner FRONT aligned. Move piston down
until bottom edge of piston skirt is 1.00 inch (25.4 mm) above bottom of liner. Refer to FIGURE 3-134 (1).
(2)
Use a feeler gage to measure distance (FIGURE 3-134 (2)) between piston skirt and liner 90 degrees to
piston pin bore. Record measured distance and compare with specifications given. Clearance should be
0.003 to 0.006 inch (0.08 to 0.15 mm).
(3)
Turn piston 90 degrees in liner. Use a feeler gage to measure distance between piston skirt and liner 90
degrees to piston pin bore. Record measured distance and compare with specifications given.
3-193
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