MAINTENANCE INTRODUCTION (CONT).
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.
Compressed air used for cleaning and drying purposes will be reduced to 30 psi. (207 kPa.)
and used only with adequate chip guarding and personal protection equipment.
Do not use wire brushes, abrasive wheels, or compounds to clean parts, unless specifically approved in the
detailed instructions. Dimensional characteristics of machined surfaces can be altered and may weaken a highly
Soak parts in dry cleaning solvent P-D-680 (item 31, Appendix E) and wash away deposits by sloshing or
spraying. When necessary, brush with a soft bristle brush (not wire) moistened in dry cleaning solvent. Use a jet of dry
compressed air to dry parts, except bearings, after cleaning. Bearings must drip and air dry.
Do not clean rubber parts in dry cleaning solvent. Wipe clean with a dry, clean, lint-free cloth.
Trichloroethylene is toxic to skin, eyes and breathing passages. Avoid all exposure. Skin and
eye protection and exhaust hood are required. Contact safety officer for local procedure
regulations concerning the use of trichloroethylene before using.
A degreasing tub may be used to remove heavy grease and oil from metal parts. Trichloroethylene is used
as a degreasing agent.
To prevent corrosion, part should be dipped in rust preventive within two hours of degreasing.
Remove parts from degreasing machine and check all oil passages and cavities for cleanliness and
freedom from obstruction before coating with rust preventive. Run a thin, flexible wire through oil passages to make sure
they are not clogged. Use a pressure spray gun and dry cleaning solvent to clean dirty passages.
Parts soaked in carbon removal solution should be rinsed with dry cleaning solvent. Rinse in a solvent
spray booth equipped with a filter and hand spray gun, then use a soft bristle brush to remove carbon deposits. A cloth
buffing wheel may also be used.