TM 9-6115-604-34NAVFAC P8-633-347-7. RADIATOR REMOVAL. Remove the radiator in accordance with the Operator and Organizational MaintenanceManual.7-8. RADIATOR CLEANING INSPECTION, AND i t I ING.a.Core Assemblies (24, Figure 7-2).(1)Check for bent fins and bent or damaged gasket surfaces.(2)Check soldered joints for corrosion.(3)Check the core tubes for soundness and evidence of internal corrosion. Press lightly against the tube wall;tubes that dent or penetrate easily have been eaten away by internal corrosion.(4)Plug or block off either the inlet or outlet tube, and attach a regulated air supply to the other tube.CAUTIONTo avoid damaging or permanently distorting the core, do not exceed an air pressure of 15 psi(103 kPa).(5)Immerse the radiator in a water tank, and pressurize the core assemblies (24) to 10 psi (69 kPa). Escapingair bubbles will show the location of any leak points.(6)Repair leaks in soldered points or core tubes by soldering in accordance with MIL-S-6872. After soldering,test for leaks.(7)Straighten bent fins of the core assemblies (24).(8)Reverse flush the core assemblies (24) thoroughly using a flushing gun MIL-G-14562. Attach the flushinggun to the core outlet tube, allow the core assembly to fill with water, and flush, using short bursts of airpressure. Apply the air pressure gradually, and allow the core assemblies to fill with water between eachburst. Continue the flushing procedure until all traces of rust and scale have been removed. This will beevident by dear water flowing from the inlet tube.b.Gaskets (see Figure 7-2). Inspect gaskets for evidence of leakage and for signs of damage. Repair damagedradiator gaskets by disassembling radiator to replace the gaskets.c.Structural Members (see Figure 7-2). Inspect structural members for cracks, tears, and signs of damage. Repairdamaged structural members by welding cracks and tears in accordance with paragraph 2-9.d.Top and Bottom Tank Assemblies (15 and 16, Figure 7-2). Inspect the top and bottom tank assemblies (15 and16) for signs of damage. Using a suitable straight edge, check the top and bottom tank assemblies (15 and 16)for warping or distortion. Replace components which are damaged, warped, or distorted.7-9. RADIATOR DISASSEMBLY. See Figure 7-2.a.Remove hexagon head capscrews (1), hexagonal nuts (2), flat washers (3), and lockwashers (4), and removeshroud assembly (5).b.Remove hexagon head capscrews (6 and 7), flat washers (8), and lockwashers (9) to remove left side assembly(10) and right side assembly (11).c.Remove hexagon head capscrews (1 2), hexagonal nuts (13), and lockwashers (14) to remove top tank assembly(15), bottom tank assembly (16), header bars (17) and front/rear header bars (18), and header gaskets (19).d.Remove hexagon head capscrews (20), flat washers (21), lockwashers (22), and hexagonal nuts (23) to separatecore assemblies (24), center ring assembly (25), header bars (26), front/rear header bars (27), and headergaskets (28).WARNINGDry cleaning solvent PD680, Type IIl, or equivalent, is flammable and moderately toxic to theskin, eyes, and respiratory tract. Assure adequate ventilation. Skin, eye, and respiratoryprotection is required to avoid injury to personnel.e.Clean all parts, except the core assemblies (24), in cleaning solvent PD-68M, Type IIl, or equivalent.7-6
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