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ARMY TM 9-2815-253-24 AIR FORCE TO 38G1-93-2 MARINE CORPS TM 2815-24/3 3-34.3.  Inspection. WARNING Cleaning    solvent    is    flammable    and    toxic    to    eyes,    skin,    and    respiratory    tract.        Avoid repeated/prolonged contact.  Good general ventilation is normally adequate. NOTE All components must be removed from engine block for inspection and cleaning. a. Clean block (12, FIGURE 3-43) thoroughly using dry cleaning solvent (P-D-680), pressure steam, or a hot tank. CAUTION 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. b. Make sure all passages and crevices are cleared of sludge and grease. c. All coolant passages must be cleared of any lime deposits and scale. d. Carefully inspect block for cracks or damage.  Replace block if there is evidence of physical damage. WARNING 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. e. 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. 3-75/(3-76 blank)


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