TM 5-3805-262-203-7. COOLING SYSTEM TROUBLESHOOTING (CONT) MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1. ENGINE OVERHEATS (Cont).Step 10. Check if there is wrong or contaminated fuel in fuel tank (contam-inated fuel will have a milky white appearance).a. If wrong or contaminated fuel in fuel tank, drain and clean fuelt a n k ( p a g e 4 - 3 2 ) , r e p l a c e f u e l f i l t e r s ( p a g e 4 - 3 8 ) , a n d r e f i llw i t h c o r r e c t f u e l.b. If fuel is okay, go to step 11 below.Step 11. Check that coolant is 50-50 solution of Ethylene Glycol and water.a . I f c o o l a n t isdrain coolantGlycol and 50b . I f c o o l a n t isstep 12 below.not 50-50 solution of Ethylene Glycol and water,from radiator and fill using 50 percent Ethylenepercent water (page 4-69).50-50 solution of Ethylene Glycol and water, go toStep 12. Check area around exhaust manifold for signs of coolant leakage.a. If signs of coolant leakage are seen, notify next higher mainte-nance level (cylinder head or cylinder sleeve(s) are cracked andmust be replaced).b. If signs of coolant leakage are not seen, go to step 13 below.3-56
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