ARMY TM 9-6115-604-12NAVY NAVFAC P-8-633-12Table 3-5. Coolant Test Results and RecommendationsNUMBER OF DROPS,NITRITE TEST SOLUTION ARECOMMENDEDFOR COLOR CHANGE IN REDCOOLANT SOLUTIONCOOLANT CONDITIONMAINTENANCEWITH ANTIFREEZEWITHOUT ANTIFREEZE0-120-6Dangerous (0 to 0.6 oz perPrecharge system or addgallon DCA)make-up DCA12-177-12Borderline (0.7 to 1.2 oz perReplace service filter and/orgallon DCA)add make-up DCA18-2513-20Acceptable (1 3 to 2.0 oz perNonegallon DCA)25-3020-30Tolerable (2.0 to 3.0 oz perNonegallon DCA)over 30over 30Overrated (over 3 0 oz perDrain part of coolant andgallon DCA)make-up withplain antifreezeand/or water(d) Install new water filter elements, and tighten until the seals touch the water filter head. Tighten anadditional one-half to three-fourths turn.(e) Open the valvese.MaintenanceofRadiatorPipes.Hoses.andClamps.SeeFigure3-17.(1) Inspect. Inspect the radiator pipes, hoses, and clamps for security. Check for rust or other signs of leakage.Check hoses for deterioration.(2) Replace.(a) Drain the radiator in accordance with paragraph 3-13 b, above.(b) Remove overflow hose (8) by removing hose clamp (9) and clamps (47).NOTETo remove hose assembly (10) unit level maintenance must remove radiator shutterassembly.(c) To remove hose assembly (10), loosen hose clamps (11) and disconnect pipe adapter (14)from reducer(13) and clamps (47).(d) To remove radiator drain hose (19), remove hose clamps (20), unscrew straight adapter (21), shut offcock (22), pipe nipple (23), and elbow (24).(e) To remove hose assembly (25), remove hose clamps (26), unscrew pipe bushing (27), elbow(28), andstraight adapter (29).(f)To remove radiator outlet hoses (31) and water outlet tubes (32), remove hose clamps (30).(g) To remove radiator inlet hoses (33) and water inlet tubes (34), remove hose clamps (11).3-49
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