TM 9-2320-361-34 I 3-18. ENGINE REPLACEMENT (Contd) WARNING Do not disconnect air lines before draining air reservoirs. Small parts under pressure may shoot out with high velocity, causing injury to personnel. 13. Disconnect air line (2) from air governor (1). 14. Disconnect air line (4) from air compressor (3). NOTE Have drainage container ready to catch excess water. 15. Remove two clamps (6), inlet hose (5), and outlet hose (7) from hot water personnel heater (8). 3-60