Check For Interference Between Water Temperature Regulator And Cylinder Head Bore{1355}
Usage:
3300 Series Engines
Reports indicate that some 3300 Series Engines with 7N208 Water Temperature Regulators have experienced overcooling or cooling system pressure surges. In many cases this problem is caused by interference between the water temperature regulator guide tabs and the bore in the cylinder head. Interference occurs when the guide tabs are bent outward. When the guide tabs are bent slightly inward, there is no chance of the interference between the tabs and the cylinder head.
Location of guide tabs on 7N208 Water Temperature Regulator.
Caterpillar Information System:
1985/05/13 Improved Remote Shutoff Group Has New Pressure Control Group{1050,1078,1085}
1985/05/13 New Oil Pressure And Water Temperature Alarm Contactor Group Used{7400,7407,7417}
1985/05/13 Hydramechanical Governor Fuel Setting Information{1289,1250}
1985/05/06 Remanufactured Fuel Ratio Controls Are Available In U.S. And Canada{1278,7754}
1985/05/06 Be Sure Correct Piston Rings Are Used On 3400 Series Engines{1215,1214}
1985/05/06 New Clamp Added To Right Hand Instrument Panel Fuel Filter Differential Lines Group{7451,7456,7450}
1985/05/06 New Governor Drive Group Has Longer Service Life{1289,1264}
1985/05/06 System To Find Internal Fuel Leakage{1250}
1985/05/06 New Bearing Housings Available For Turbochargers{1052,1053,1056}
1985/05/06 New Battery Cable Crimping Die Available{0600}
1985/05/06 Exhaust Manifolds Now Use Locks And High Temp Bolts{1050,1059}
1985/04/29 Visual Inspection Can Detect Chrome Plated Engine Valves{1105}
1985/05/20 Incorrect Air Compressor Installation Can Cause An Early Failure{1800,1803,1804}
1985/05/20 Air Conditioner Compressor Mounting Bracket Improved{1802}
1985/05/20 New Spark Resistant Air Starting Motor Group Has Serviceable Parts{1451}
1985/05/20 New Temperature Recorder Group (Crayons) Indicate Surface Temperature{0776}
1985/05/27 Rebuilt Axial Piston Pumps{5070}
1985/05/27 Remanufactured Bare Cylinder Heads (U.S. And Canada){1101,7754}
1985/05/27 Use Caterpillar 6V50 Engine Timing Indicator For Accurate Readings{0782,0785,0775}
1985/05/27 Obtaining Correct Bolt Torque On Ground Engaging Tools{6800,7553}
1985/05/27 Correct Procedure To Check Tapered Bearing End Clearances{7551,3257,3300,3000}
1985/06/03 Improved Serviceability Of Water Cooled Exhaust Manifolds{1350,1355}
1985/06/03 Water Cooled Exhaust Elbow Groups Available{1052,1061}
1985/06/03 Preventing Skin Irritation From Petroleum Test Fluids{0353}