COOLING SYSTEMTESTING AND ADJUSTINGTM 5-3805-263-14&P-2The locations for making the temperature checkswith probe are listed below:PROBE LOCATIONSTEMPERATURESTop Tank (Fig. 2) andAmbient (Fig. 1)Maximum 110°F (61°C) difference.Top Tank (Fig. 2) andMaximum 15° F (9°C) difference.Bottom Tank (Fig. 3)Top Tank (Fig. 2)Under normal conditions, temperaturedifference maximum 40°F (22°C).Top Tank (Fig. 2) andMaximum 2°F (1°C) difference withRegulator Housing (Fig. 2)regulators open.PROBLEMOverheatingNot enoughWater FlowOverheatingOvercoolingOverheatingCHECK FORWrong Gear Selection.Radiator Core with Restriction to Air Flow.Bent Radiator Fins.Low Fan Speed.Damaged Fan Guard.Wrong Blade Position.Defect in Water PumpCollapsed Hoses.Restriction in Radiator Core Tubes.Low Coolant Level.Wrong Gear Selection.Engine Operated with too Great a Load.Temperature Regulator will not Close.Regulator Seals Leaking.Coolant Flow Past the Regulator FlangeLow Ambient Temperature with Light LoadsTemperature Regulators will not Open.Be sure the probe is installed in the liquid of the system being tested.CAUTIONDo not tighten the probe to more than 30 lb. ft. (40 N•m) torque.Check temperatures in the locations listed in the chart and make a comparison of these temperatures. Look atthe chart to see if these comparisons are within the range in the chart. Make the needed checks if thetemperatures are not within the ranges.NOTE: To get the correct reading make a measurement of the temperatures during working conditions.1-65
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
