Dry cleaning solvent PD-680, Type IlI, or equivalent, Is flammable and moderately toxic to the
skin, eyes, and respiratory tract. Assure adequate ventilation. Skin, eye, and respiratory
protection Is required to avoid Injury to personnel.
Compressed air used for cleaning or drying can create airborne particles that may enter the
eyes. Pressure shall not exceed 30 psi (207 kPa). Wearing of goggles Is required to avoid
Injury to personnel.
Clean. Clean the crankshaft and counterweights thoroughly using solvent PD680, Type III, or equivalent. Pay
particular attention to the drilled oil passages in the crankshaft. These passages are best cleaned with an electric
drill and a valve guide cleaning brush. Flush all passages thoroughly with solvent after several passes with the
brush; repeat until the solvent runs clean. After cleaning, blow out the passages with compressed air, and run a
small magnet though the oil passages to remove any metal partides that may remain.
Figure 9-38. Disassembly and Assembly of Crankshaft