Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles, face mask, and
gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes and
don't breathe vapor. Do not use near open flame or excessive heat. The flashpoint for type I dry
cleaning solvent is 100°F (38°C) and for type II is 140°F (60 °C). If you become dizzy while using
cleaning solvent, get fresh air immediately and get medical aid. If contact with eyes is made,
flush eyes with water and get medical aid immediately.
Clean all parts with dry cleaning solvent P-D-680.
Inspect valves for pits, evidence of burrs, or cracks.
Measure valve stem and valve guides for wear using calipers.
If valve stem OD (0.311 to 0.312 in. [7.90 to 7.92 mm]) is not within tolerance, replace valve.
If valve guide ID (0.313 to 0.314 in. [7.95 to 7.98 mm]) is not within tolerance, replace guide.