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![]() TM 5-2420-222-20-1 
ENGINE COOLANT HEATER HOSES AND FITTINGS (OPTIONAL) - CONTINUED 
ACTION 
LOCATION 
ITEM 
REMARKS 
5. 
Upper hose (6) 
Two clamps 
Using 3/16-inch flat-tip screwdriver, 
(7 and 8) 
loosen. 
6. 
Engine coolant 
Upper hose (6) with 
Pull off. 
heater (3) and 
assembled two 
tube nipple (9) 
clamps (7 and 8) 
7. 
Upper hose (6) and 
Four clamps 
Slide off. 
lower hose (1) 
(2, 4, 7, and 8) 
8. 
Cylinder head (10) 
Elbow (11) with 
Using 114 to 1-inch adjustable pipe 
assembled tube 
wrench, unscrew and take out. 
nipple (9) 
9. 
Engine block (12) 
Tube nipple (5) 
Using open-end wrench, unscrew and take 
2-363 
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