TM 5-1940-277-34ENGINE BLOCK INSPECTION AND REPLACEMENT INSTRUCTIONS(Continued)LOCATIONITEMACTIONREMARKS*Place blockUse hoist toin immersionlift.tank ofwater, heatedto 180 - 212 Ffor 20 minutes.WARNINGAlways use safety goggles when using dry compressed air. High air pressure can cause injuryand cut the skin.• After 20Use air compres-minute immer-sor.sion periodapply 80 -100 psi airpressure toblock.• Check for airbubblesleaking fromcylinderblock (indi-cation ofcracks inblock).• Release airpressure andremove blockfrom immer-sion tank.• Remove coverover waterpump hole (3)and 1/2 in steelplate and gas-ket (2) on topof block.3-91
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