TM10-3930-660-20 7-3. RADIATOR -  SERVICE/REPLACE/TEST This task covers: a. Checking and adding engine coolant b. Changing coolant c. Radiator removal d. Radiator installation e. Pressure testing cooling system Initial Setup Tools Tool Kit, General Mechanics Equipment  Condition Vehicle parked on level ground. Engine OFF and cool. Load backrest removed from storage position (if stored). Negative battery cable removed, para.  8-44. Materials/Parts Clamps  (9),  (21),  (22) Cleaning Solution (App. C, Item 8A) Container, 10 Gal. Coolant (App. C, Item 5) Locknuts  (40),  (44) Lockwashers (13), (30), (33), (36) Loctite 242 (App. C, Item 39) Personnel Required Two Personnel WARNING Let engine cool before removing radiator cap from radiator. Always turn cap slowly to the first stop and allow pressure to escape before removing cap completely. Removing cap while coolant is hot can result in personal injury. Two people are required install  the  radiator. to remove and 7-2