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TM 55-1905-223-24-4
b.
Measure each piston skirt diameter as illustrated in FIGURE 4-36.
Minimum - 4.0088 inch (101.823 mm)
Maximum - 4.0117 inch (101.896 mm)
FIGURE 4-36. Measuring Piston Skirt Diameter.
c.
Use a new piston ring to measure the clearance in the ring groove as shown in FIGURE 4-37.
RING CLEARANCE
TOP:
Use Keystone Gauge
INTERMEDIATE:
Minimum 0.003 inch (0.075 mm)
Maximum 0.0059 inch (0.150 mm)
OIL CONTROL:
Minimum 0.0016 inch (0.040 mm)
Maximum 0.0051 inch (0.130 mm)
FIGURE 4-37. Measuring Piston Ring Clearance
.
4-32
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