1994/09/01 Caterpillar

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

Usage:

All SR4 Generator Sets With EMCP II Control Panels

There are two different Emergency Stop Push Buttons used on the EMCP II Control Panels.

Earlier EMCP II Control Panels were provided with either a 103-8976 Energized To Run (ETR) Shutoff Group, or 103-8977 Energized To Shutoff (ETS) Shutoff Group. The service parts for the Emergency Stop Push Buttons in these shutoff groups follows.

* 2W-8798 Switch Operator

* 2W-8683 Contact Block (N.O.)

* 2W-8800 Contact Block (N.C.)

Later EMCP II Control Panels were provided with either a 111-7760 Energized To Run (ETR) Shutoff Group, or 111-7761 Energized To Shutoff (ETS) Shutoff Group. The service parts for the Emergency Stop Push Buttons in these shutoff groups follows.

* 109-6507 Switch Operator

* 111-1323 Contact Block (N.O.)

* 111-1324 Contact Block (N.C.)

* 111-1325 Contact Block (N.O. & N.C.)

NOTE: The Earlier and Later Emergency Stop Push Button service parts are not interchangeable.

Caterpillar Information System:

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

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

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

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

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

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

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

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

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

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

1994/09/01 New Gasket Provides Improved Sealing Between Air Compressor And Drive {1803}

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

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

1994/10/01 Fuel Priming Pump Can Be Installed On Either Left Or Right Side Service Fuel Filter Groups {1258}

1994/10/01 New Engine Crankshaft Rubber Damper Assembly Uses Improved Rubber Material {1205}

1994/10/01 Adjustment Of Air/Fuel Ratio Control Setting {1278}

1994/10/01 New Governor Control Assembly to Improve Acuator Stability {1289}

1994/10/01 New Spark Plug Tightening Specifications For Engines With Canadian Standards Association (CSA) Ignitions {1550}

1994/10/01 Longer Inch Cylinder Head Bolt Provides Increased Thread Engagement {1100}

1994/10/01 Remanufactured Crankshaft Interchangeability; Remanufactured "Upgrade To New" (UTN) Availability {1202}

1994/10/01 New Higher Capacity Oil Pump Used {1304}

1994/10/01 New Gas Pressure Regulator Assembly Used To Provide Increased Parts Commonality {5503}

1994/10/01 New 106-7408 Engine Oil Film (Decal) Available {7557}

1994/10/01 New Intake Valve Lash Setting {1105}