1994/01/01 Caterpillar

New Piston Body Has Improved Bonding Between Iron Band And Aluminum Body{1214}

Usage:

3406B (5YG, 2EK),
3406C (4CK) Truck Engines

Description of Change: A new improved piston body is used in the above truck engines. The new piston body has improved retention of the iron band (ring carrier) to the aluminum body. This will help prevent separation of the iron band from the aluminum body.

Adaptable To: The new 113-6045 Piston Body Assembly is a direct replacement for the former 7E-0489 Piston Body Assembly. The former piston body assembly is canceled. The new 113-6045 Piston Body Assembly is in effect with 3406C Truck Engine 4CK24193.

NOTE: If a former 7E-0489 Piston Body Assembly fails due to a separation between the iron band and the aluminum body, replace all six pistons with new 113-6045 Piston Body Assemblies.

The new piston body assembly is adaptable to the 460 hp arrangements of 3406B/C Truck Engines 5YG1-Up, 2EK1-Up, 4CK1-24192.

Caterpillar Information System:

1994/01/01 Flywheel Housing to Cylinder Block Joint Improvements{1157,1201}

1994/01/01 Cylinder Head Gaskets Improved To Provide Better Fire Ring Retention{1124}

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1994/01/01 Exhaust Valve Bridge Should Not Be Adjusted{1119}

1994/01/01 Cold Weather Operation{0374}

1994/01/01 New Valve Cover Gasket Used{1107}

1993/12/01 Uses, Characteristics, And Removal of Castrol Tarp®, Tarp-B®, And 4164®{0374}

1993/12/01 Procedure To Prevent Moisture From Collecting In The Hose Between The Air Inlet Manifold And Transducer Module (Boost Sensor){1917}

1993/12/01 Clarify Usage Of Parts Service Cylinder Head Gaskets{1124}

1993/12/01 Replacement Of Earlier Truck Engines In General Motors Topkick And Kodiak Trucks{1000}

1993/12/01 New Control Assemblies Used In Fuel Injection Control Groups{1298}

1993/11/01 8T-8697 Electronic Control Analyzer Programmer (ECAP) Improved

1994/01/01 Fuel Injection Pump Improvements{1251}

1994/01/01 New Pedal Mounted Throttle Position Sensor Available{1913}

1994/01/01 List of Service Publications{0374}

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1994/03/01 New Seal Used In Air Lines Group{1058}

1994/03/01 Improved 1R-0712 Fuel Filter Available{1261}

1994/03/01 Improved Ceramic Turbocharger Group Used{1052}

1994/03/01 Electromagnetic Fan Clutch Available{1359}

1994/03/01 The Ninth Edition Of The Lubricating Oils Data Book Is Available From The Engine Manufactures Association (EMA) {1318}