TM 5-3805-261-20COOLING SYSTEM MAINTENANCE. (cont)6-48.RadiatorServicing.(Sheet 3 of 4)DRAINING (cont)4.Remove plug (3, Figure 6-122) from waterpump inlet and drain coolant.5.Install plug (3).6.Remove plug (4, Figure 6-123) from engineblock and drain coolant.7.Install plug (4).8.Remove plug (5) and washer (6) fromtransmission oil cooler and drain coolant.9.Install washer (6) and plug (5).FLUSHING1.Fill radiator with clean water.2.Run engine for 15 minutes.3.Drain cooling system. Refer to steps 1 thru9.WARNINGCompressed air used for cleaningpurposes will not exceed 30 psi. Useonly with effective chip guarding andpersonal protective equipment(goggles/shield, gloves, etc.)4.Clean radiator using compressed air toclean exterior and to remove obstructions.Figure 6-122.Figure 6-123.Go to Sheet 46-172
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