PISTON AND CONNECTING ROD MAINTENANCE - CONTINUED
Dry cleaning solvent P-D-680 type III is toxic and flammable. Wear protective goggles and gloves and
use only in a well-ventilated area. Avoid contact with skin, eyes, and clothes and do not breathe
vapors. DO NOT use near open flames or excessive heat. The solvent's flash point is 200F (94C). If
you become dizzy while using dry cleaning solvent, get fresh air immediately and get medical aid. If
solvent contacts eyes, wash your eyes and get medical aid immediately.
Soak pistons in solvent for a minimum of 30 minutes.
Remove carbon deposits with hot, soapy solution and nonmetallic brush.
Use solvent to clean connecting rods.
Compressed air used for cleaning or drying purposes, or for clearing restrictions, should never exceed
30 psi (207 kPa). Use protective equipment and exercise caution to avoid injury to personnel.
Dry all components with compressed air.
Visually inspect connecting rod, connecting rod cap, and screws as follows:
Inspect connecting rod for damage. If "I-beam" is nicked or damaged, replace connecting rod.
Inspect connecting rod pin bore bushing for damage. If damaged, replace bushing.
Inspect connecting rod cap for damage. If damaged, replace cap.
Inspect capscrews for damaged threads. If damaged, replace capscrews.
Connecting rod cap and connecting rod are matched with a stamped number. When assembling con-
necting rod caps to connecting rods, stamped numbers MUST match and be on the same side.
Install connecting rod cap on connecting rod and secure with two capscrews with captive washers. Tighten as follows:
Tighten capscrews to 50 lb-ft (68 Nm).
Tighten to 105 lb-ft (142 Nm).
Tighten to 155 lb-ft (210 Nm).
Loosen capscrews completely.
Repeat steps a thru c.