1992/04/20 Caterpillar

Be Sure To Use Correct Installation Procedure For Core Plug Block Heaters (Engine Coolant Heaters){1383}

Usage:

Core plug block heaters can come loose because of incorrect installation. Use the guidelines that follow to correctly install either friction fit (drive-in type) or compression ring type engine coolant heaters.

* Use a file or sand paper to put an approximate 0.8 mm (.03 in) chamfer in bore for the core plug block heater.

* Use ONLY antifreeze as an installation lubricant. NEVER use silicone grease or liquid soap or other lubricating fluid (other than antifreeze) to facilitate assembly.

* Use the supplied parts with compression type core plug block heaters, such a lock rings, seals, etc.

* Be sure all the parts are installed in the core plug bore in the correct order and position before tightening.

* Use the correct installation torque when installing a compression type core plug block heater. Either too much or too little torque can result in a loose fit. Refer to the appropriate Service Manual module or Special Instruction for the correct installation torque.

Caterpillar Information System:

1992/04/20 Newer Oil Formulations For Caterpillar Engines{0374,1300}

1992/04/20 Changed Pictograph Symbols For EMS and CMS{7490,7400}

1992/04/20 New Spring Used In Governor Control Groups{1265}

1992/04/13 Be Sure 8N2001 Oil Filter Base Is Correctly Installed{1306}

1992/04/13 New Cylinder Kits Available{1213}

1992/04/06 New Bracket Assembly Added To Exhaust Manifold Group {1059}

1992/04/06 High Capacity Oil Pan Available {1302}

1992/04/06 New Turbocharger Groups With Ceramic Turbine Wheels Used {1052}

1992/04/06 New And Improved Operation And Maintenance Manuals Available {0374}

1992/04/06 New PRELUB Systems Available For Medium To Large Caterpillar Construction Equipment {1319}

1992/04/06 New Caterpillar Engine Oil Nomenclature {0374,0645,1300}

1992/04/06 Engine Oil Recommendations Have Been Changed {0374,1300}

1992/04/20 Procedure To Repair Damaged Oil Pan Drain Hole Threads{1302}

1992/04/20 Identification Of Remanufactured Direct Injection Fuel Nozzles (DIFN){1254}

1992/04/20 Component Cross Reference Lists For Programed Electronic Engine Control (PEEC) Systems{1900}

1992/04/20 Improved Woodward PSG Governor Groups And Improved Carburetor Control Groups Provide Improved Governor To Carburetor Linkage Control{1264,1265}

1992/04/20 New Auxiliary Sea Water Pump Group Available{1371}

1992/05/11 Troubleshooting 04 Diagnostic Code On Electronic Modular Control Panels (EMCP){4490,4450}

1992/05/11 Procedure for Cleaning an Engine Lubrication System when Contaminated with Engine Coolant Containing Antifreeze{1300,1350}

1992/05/11 New Components In Aftercooler Water Lines Group Help Reduce Vibration{1380}

1992/05/18 Fuel Injector Group Rack Movement{1290}

1992/05/18 Spring Used To Hold Valve In Position In Remanufactured Fuel Transfer Pumps{1256}

1992/05/18 New Turbocharger Groups Help Prevent Surge (Popping){1052}

1992/05/18 New Throttle Actuator In Governor Groups Improves Engine Stability{1289}