1998/03/01 Caterpillar

New Control Panel Films For SR4B Generators Which Are Not To Be Used In Delta Connection{4450}

Usage:

All Generator Sets With 447, 448, 449, 450, 592, 593, 594, 595, 596, 597, and 598 Frame Size Generators

Description of Change: The 447, 448, 449, 450, 592, 593, 594, 595, 596, 597, and 598 Frame SR4B Generators with 6 or 12 lead connections should not be reconnected to a delta configuration. When these types of generators are connected in the delta configuration, the circulating current within the delta will cause additional heat in the generator stator.

Adaptable To: Wiring control films for 4/6 and 10/12 lead connections provided with generators of the frame sizes listed above, have been changed. The 139-9026 Control Panel Film replaces the former 7E-5940 Film on the generators which have 4 or 6 leads. The 139-9025 Control Panel Film replaces the former 4W-9449 Film on the generators which have 10 or 12 leads.

Caterpillar Information System:

1998/03/01 Stainless Steel Instrument Lines Groups Improved{7451}

1998/03/01 Metal Particle Detector{7400}

1998/03/01 Current Woodward EGB29P Actuator Assemblies Used On 3600 Diesel Engines{1716}

1998/03/01 New Exhaust Valve Used In Cylinder Head Groups{1105}

1998/03/01 A New Chrome Plated Steel Thrust Washer Is Used In The Air Lines Groups{1058,1079}

1998/03/01 Air Quality Requirements For Turbocharger Air Impingement System{1052}

1998/03/01 The Ignition Bulkhead Connector Reoriented To Help Prevent Moisture Damage{1408}

1998/03/01 Process Changes Result In Improved 3500 Engine Remanufactured Connecting Rod Assembly{1218}

1998/03/01 New Pump Group Used In Auxiliary (Fresh Water) Pump Group For Separate Circuit Aftercooler (SCAC){1371}

1998/03/01 New Piston Cooling Jet Tube Assembly Provides Increased Piston Clearance{1331}

1998/03/01 Be Sure To Use The Correct Inlet And Exhaust Valves In Engines Equipped With Valve Bridges That Do Not Ride On Dowels{1105,1121}

1998/03/01 New More Efficent Turbocharger And Exhaust Bypass Group For The G3406 Low Compression Ratio Gas Engines{1057,1052}

1998/03/01 Improvement To Reduce Incidence Of 190-02 Diagnostic Code On Electronic Modular Control Panel II (EMCP II) Or Electronic Modular Control Panel II+ Equipped Generator Sets{4490}

1998/04/01 Lower O-Ring Seal Removed From Mechanical Fuel Injector Group{1290}

1998/04/01 Stronger Injector Hold Down Bolt Used In Fuel Injection Pump Groups{1290}

1998/04/01 New Coolant Hose For Exhaust Bypass Valve{1380,1057}

1998/04/01 New Improved Inlet Manifold (Flame Arrestor) Gasket{1058}

1998/04/01 New Debris Shield Is Added To Cylinder Head Gasket Kits{1124}

1998/04/01 New Components Used In Crankcase Breather Group Help Prevent Oil Leaks{1317}

1998/04/01 New Improved Thermostat Housing Seal{1355}

1998/04/01 New Improved Jacket Water Temperature Regulator For Landfill Applications{1355}

1998/04/01 New Spark Plug Recommended For G3500 Engines{1555}

1998/04/01 New Electronic Control Module (ECM){1901,1900,1920}

1998/04/01 New Improvement To The Pyrometer Switch Improves Reliability{7466}