1994/09/01 Caterpillar

New Gasket Provides Improved Sealing Between Air Compressor And Drive {1803}

Usage:

3406B/C (6TB) Industrial, 3406B/C (4TB) Marine, 3406B/C (2WB) Generator Set Engines

Description of Change: A new gasket is used in the air compressor groups on the above commercial engines. The new gasket material has less rubber content. This helps prevent the new gasket from hardening and becoming brittle. The new gasket will provide better sealing and increased service life.

Adaptable To: The 100-6178 Gasket is a direct replacement for the former 7W-6084 Gasket in the air compressor groups on the above commercial engines.

NOTE: When installing a new 100-6178 Gasket:

* The "beaded" side of the new gasket must be toward the front timing housing.

* The new gasket must NOT be coated with anti stick compound.

Location of new 100-6178 Gasket in typical air compressor group.

Caterpillar Information System:

1994/09/01 New PSG Governor With Pneumatic Air Head Control Available {1264}

1994/09/01 New Seals In Pump Fastener Group And Fuel Injection Pump Group Have Improved Heat Set Resistance {1251}

1994/09/01 Remanufactured 3400 Cylinder Heads Now Use Intake And Exhaust Valves With Chrome Plated Valve Stems {1105}

1994/09/01 Different Valves And Valve Seats Used In Remanufactured Cylinder Head Groups {1103,1105}

1994/09/01 Longer Studs And Spacers Used To Retain Exhaust Manifolds {1059}

1994/09/01 New Turbocharger Increases G3412 Engine Performance {1052}

1994/09/01 New Fuel Priming Pump Assembly Used In Fuel Priming Pump Group {1258}

1994/09/01 Improved Fuel Pump Bonnet Seals Have Better Heat Resistance {1251}

1994/09/01 Tachometer Adjustment To Read Correct Engine RPM; Instrument Background Lighting {7451,7462}

1994/09/01 Use Of 4C-4377 Stress Plate Group In 3114 And 3116 Cylinder Block Reconditioning {0672,0673,1201}

1994/09/01 Cylinder Head Bolt Tightening Procedure {1100}

1994/09/01 Caterpillar Introduces New Long Life Heavy Duty Engine Coolant {1395}

1994/09/01 New Gears And Pipe Plugs In Auxiliary Drive Group {1150,1165}

1994/09/01 New Cylinder Liner, Spacer Plate, Spacer Plate Gasket, And Cylinder Head Gasket Used {1216,1221,1124}

1994/09/01 New Plunger In Fuel Pressure Regulating Valve {1250}

1994/09/01 New Gasket Used In The Water Lines Group {1380}

1994/09/01 Improved Knock (Detonation) Sensor Group Replaces Detonation Sensor {1559}

1994/09/01 New Operation And Maintenance Videos Available {0374}

1994/09/01 Turbocharger Turbine Nozzle Reusability Information {1052}

1994/09/01 Use Thread Lock On Bolts That Fasten Aftercooler Housing To Cylinder Block {1063}

1994/09/01 New Rear Camshaft Segments With Stronger Camshaft Flange Used {1210}

1994/09/01 Reworking Diesel And Gas Cylinder Heads On 6.25 Bore V Engines {1101}

1994/09/01 Different Emergency Stop Push Buttons for Electronic Modular Control Panel II (EMCP II) {4490,4450}

1994/10/01 New Rear Crankshaft Seal Groups Available {1161}