CLEANING AND INSPECTION WARNING Skysol-100 mixture is combustible. Use mechanical ventilation whenever product is used in a confined space, is heated above ambient temperatures, or is agitated. DO NOT use or store near heat, sparks, flame, or other ignition sources. Keep container sealed when not in use. Contact with Skysol-100 may cause skin irritation. Use chemical resistant gloves. In case of skin contact, remove any contaminated clothing and wash skin thoroughly with soap and water. Wash contaminated clothing before reuse. Eye contact may cause irritation, tearing, or blurring of vision. Use face shield or goggles when eye contact may occur. In case of eye contact, flush eyes with large amounts of water for at least fifteen (15) minutes or until irritation subsides. Inhalation may cause irritation to upper respiratory passages. DO NOT have food or drink in the vicinity. 1. Clean all piston and connecting rod parts with Skysol-100 and dry with lint-free cloth. 2. Inspect connecting rod (5) for scratches or other damage more than .003 in (.076 mm). Replace connecting rod (5), if damaged. 3. Inspect screws (13) and nuts (18) for damaged threads. Replace screws (13) or nuts (18), if damaged. 4. Inspect piston ring grooves (9) and (10) on piston (11) for nicks, burrs, or cracks. Replace piston (11), if damaged. 5. Inspect clearance between ring (3) and side of groove (9) of piston (11). Clearance should be 0.0015- 0.0031 in (0.038-0.079 mm). Replace piston (11) if out of tolerance. ASSEMBLY 1. Press new sleeve bearing (6) into connecting rod (5). 2. Apply lubricant to piston pin (8) and install connecting rod (5) on piston (11) with piston pin (8) and snaprings (4) and (7). 3. Install new piston rings (1), (2), and (3) on piston (11). 4. Rotate piston rings (1), (2), and (3) so end gaps are 120° apart. INSTALLATION NOTE Piston is installed through top of cylinder block with connecting arm first. Each piston has the word “front” stamped on top. Install each piston with the word “front” toward the front of the engine. 1. Install upper sleeve bearing (14) on connecting rod (5). 2. Install piston ring compressor on piston (11) and insert piston (11) into cylinder block (12) until piston ring compressor is seated firmly against cylinder block (12). CAUTION Do not force piston into cylinder block. If piston does not move freely into cylinder block, remove piston and check condition of piston rings. Failure to comply may result in damage to equipment. 0361 00-4 TM 9-2320-386-24-1-2 0361 00 PISTONS AND CONNECTING RODS MAINTENANCE (Contd)