TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 3 - 22. ENGINE REMOVAL (6.2L) (Cont’d) WARNING Do not remove surge tank filler cap before depressurizing system when engine temperature is above 190°F (88°C). Steam or hot coolant under pressure will cause severe burns. 6. If engine is hot, remove surge tank filler cap (1) by placing a thick cloth over cap (1). Press down and turn counterclockwise to its first stop to release internal pressure. 7. After pressure has escaped, press down and turn cap (1) counterclockwise again and remove. NOTE Have drainage container ready to catch coolant. 8. Open and remove draincock (2) and allow system to drain. 3-48