CLEANING AND INSPECTION CONTINUED
Subtract outside diameter of piston from inside diameter of sleeve to obtain existing clearance. Refer to
Table 2 for clearance specifications.
Table 2. Piston Specifications.
6.778 in. (172.16 mm)
Skirt Clearance (Measured 90 degrees from
0.0061 to 0.0081 in. (0.155 to 0.206 mm)
1. Clean connecting rod thoroughly and visually inspect for defects IAW General Maintenance Instructions (WP
0019). Be sure collector cup at top of connecting rod is clean and open. Inspect connecting rods for
straightness. Rods must be free of twist and be parallel to pistons.
2. Check fit of piston pin in connecting rod bushing for proper clearance. If greater than maximum allowable
clearance of 0.0061 to 0.0081 in. (0.155 to 0.206 mm), replace bushing (refer to Piston Pin Bushing
Replacement in this work package).
3. Clean connecting rod bolts and nuts.
Apply lubricant to bolts and nuts. Hand thread all nuts prior to torquing.
Apply all piston rings when installing pistons.