ARMY TM 9-2815-253-24
AIR FORCE TO 38G1-93-2
MARINE CORPS TM 2815-24/3
Cleaning solvent is flammable and toxic to eyes, skin, and respiratory tract. Avoid
repeated/prolonged contact. Good general ventilation is normally adequate.
All components must be removed from engine block for inspection and cleaning.
Clean block (12, FIGURE 3-43) thoroughly using dry cleaning solvent (P-D-680), pressure steam, or a hot tank.
If engine block Is cleaned In a hot tank, be sure to remove any aluminum parts (such as
nameplates). Aluminum parts can be damaged or destroyed by hot tank solutions.
Make sure all passages and crevices are cleared of sludge and grease.
All coolant passages must be cleared of any lime deposits and scale.
Carefully inspect block for cracks or damage. Replace block if there is evidence of physical damage.
Compressed air used for cleaning can create airborne particles that may enter the eyes. Pressure
will not exceed 30 psig (207 kPa). Eye protection required.
When determined that engine block is serviceable, clean out threads for cylinder head capscrews in top deck of
engine block using a M10 x 1.25 sized tap. Use compressed air to remove any debris or fluid which may be
present in tapped holes after cleaning.
3-34.4. Installation. Install crankshaft. Refer to paragraph 3-33.3.