Incorrect Air Compressor Installation Can Cause An Early Failure{1800,1803,1804}
Usage:
3406, 3406B Truck Engines
Truck manufacturers have the responsibility for correct plumbing of the air compressor. An incorrect installation can cause an early failure in cold weather. Water freezing in the discharge line can cause a buildup of compressor head pressure, resulting in damage to bearings, crankshafts and head gaskets. To prevent early failures during cold weather, the discharge line should slope downward from the compressor to the tank, air dryer or other water removal device.
The air governor line should also slope downward. A frozen governor line can cause the compressor to stay in the loaded position. Incorrect installations that reflect on Caterpillar Engines should be pointed out to the user.
Caterpillar Information System:
1985/05/13 Check For Interference Between Water Temperature Regulator And Cylinder Head Bore{1355}
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}
1985/05/20 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}
1985/06/03 New Crankshaft Seals Used{1160,1161,1202}