SENR9977 49 Testing and Adjusting Section The dial indicator remains constant beyond five minutes. 5. Refer to Disassembly and Assembly, “Engine Oil Cooler - Install” for installation of the engine oil cooler. The inside of the cooling system has leakage only if the following conditions exist: 6. Ensure that the cooling system and the oil system of the engine are filled to the correct level. Operate the engine. Check for oil or coolant leakage. The reading on the gauge goes down. You do NOT observe any outside leakage. Make any repairs, as required. i01889428 Water Temperature Regulator - Test i02265391 Engine Oil Cooler - Inspect Note:
Do not remove the water temperature regulator from the water temperature regulator housing in order to perform the test. Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact the skin. 1. Remove the water temperature regulator housing which contains the water temperature regulator from the engine. Refer to Disassembly and Assembly, “Water Temperature Regulator - Remove and Install”. Perform the following procedure in order to inspect the engine oil cooler (if equipped): 2. Heat water in a pan until the temperature of the water is equal to the fully open temperature of the water temperature regulator.
Refer to Specifications, “Water Temperature Regulator” for the fully open temperature of the water temperature regulator. Stir the water in the pan. This will distribute the temperature throughout the pan. 1. Place a container under the oil cooler in order to collect any engine oil or coolant that drains from the oil cooler. 2. Refer to Disassembly and Assembly, “Engine Oil Cooler - Remove” for removal of the engine oil cooler. 3. Hang the water temperature regulator housing in the pan of water. The water temperature regulator housing must be below the surface of the water. The water temperature regulator housing must be away from the sides and the bottom of the pan. 3.
Thoroughly clean the flange face of the cover plate and the cylinder block. 4. Keep the water at the correct temperature for ten minutes. Personal injury can result from air pressure. Personal injury can result without following prop- er procedure. When using pressure air, wear a pro- tective face shield and protective clothing. 5. After ten minutes, remove the water temperature regulator housing. Immediately measure the opening of the water temperature regulator. Refer to Specifications, “Water Temperature Regulator” for the minimum opening distance of the water temperature regulator at the fully open temperature.
Maximum air pressure at the nozzle must be less than 205 kPa (30 psi) for cleaning purposes. 4. Inspect the cooling plates for cracks and dents. Replace the cooling plates if cracks or dents exist. If the distance is less than the amount listed in the manual, replace the water temperature regulator. Refer to Disassembly and Assembly, “Water Temperature Regulator - Remove and Install”. If necessary, clean the outside and clean the inside of the cooling plates. Use a solvent that is not corrosive on copper. Ensure that no restrictions for the flow of lubricating oil exist in the cooling plates. Install the water temperature regulator.
Refer to Disassembly and Assembly, “Water Temperature Regulator - Remove and Install”. Dry the cooling plate with low pressure air. Flush the inside of the cooling plate with clean lubricating oil.