1997/03/01 Caterpillar

New Gasket Used In Turbocharger Groups{1052,1061}

Usage:

3508 (96Y1695-Up),
3508B (2BM117-Up, 3DM84-Up, 7SM64-Up) 3512 (66Z701-Up),
3516 (72Z520-Up) Marine Engines;
3508 (95Y1002-Up),
3512 (67Z1404-Up) Industrial Engines;
3516 (73Z781781-Up) Generator Set Engines

Description of Change: A new gasket is used between the bellows assemblies and the turbochargers and between the bellows assemblies and the exhaust elbow. The new gasket is made from a different material than the former gasket. The new gasket is more resistant to heat damage.

Adaptable To: The new 139-1575 Gasket is a direct replacement for the former 7E-2940 Gasket in the following turbocharger groups:

9Y-5596 Turbocharger Group

9Y-5597 Turbocharger Group

9Y-6093 Turbocharger Group

9Y-7847 Turbocharger Group

107-9523 Turbocharger Group

107-9524 Turbocharger Group

135-0178 Turbocharger Group

136-9635 Turbocharger Group

The former gasket is canceled. The new gasket is in effect as shown above and adaptable to all earlier engines.

Locations of the new 139-1575 Gasket (1) in a typical turbocharger group. Exhaust Manifold (A). Exhaust Elbow (B).

Caterpillar Information System:

1997/03/01 New "E" Rating Of 1350 Horsepower Available For 3412C High Performance Marine Engine{1902}

1997/03/01 New Terminal-Mounted Resistor Assembly Allows Proper Loading Of Digital Diagnostic Tool Data Line{1417}

1997/03/01 The Components Of The 7C-5001, 100-8227, And 104-6775 Gas Pressure Regulator Groups Are Available For Parts Service{1270}

1997/03/01 Improvements Made To Remanufactured 0R-3008 Fuel Transfer Pump{1256}

1997/03/01 Improved Bushing O-Ring Seal Available For Injection Pump Groups{1251}

1997/03/01 4C-8180 Timing Tool Group Required For Checking And Adjusting Fuel Injection Timing On 3408C And 3412C High Performance Marine Engines{1250}

1997/03/01 Marine Transmission Oil Pressure Sensor Location{3323}

1997/03/01 Product Support Literature Available{0374,1000}

1997/03/01 Caterpillar Part Numbers Are Used For XQ Rental, Generator Set Circuit Breakers{4461}

1997/03/01 Diode Removed From Junction Box Group{1400,1417}

1997/03/01 New O-Ring Seal Used In Hydraulically Actuated Electronic Unit Injector (HEUI) Pump Group{1714}

1997/03/01 New Turbocharger Group And Air Cleaner Mounting Group Provide Improved Reliability{1051,1052}

1997/03/01 New Adapters In Turbocharger Groups Provide Improved Sealing Between The Turbocharger And Exhaust Elbow{1061,1065}

1997/03/01 New Gasket Used In Aftercooler Groups{1063}

1997/03/01 Improved Fan Spider Assembly Available{1356}

1997/03/01 New Electronic Actuator Group Provides Improved Reliability{1050,1250,1900}

1997/03/01 Valve Rotator Inspection{1109}

1997/03/01 New Procedure For Tightening Bolts On Center Cluster Stub Shaft And Camshaft Idler Stub Shafts In Rear Gear Groups{1206,1237}

1997/03/01 Improved Junction Box Group (Inline){7451}

1997/03/01 New Software For Customer Communications Module (CCM){1920,1926}

1997/04/01 New "Fuel System Reuse And Salvage Guides" Reference Manual Available{1250}

1997/04/01 Low Idle Adjustment, Additional "Buffer" Spring Adjustment Screw Used On Marine Governors{1264}

1997/04/01 132-3904 Camshaft Retainer Holds Camshaft In Cylinder Head{1100}

1997/04/01 New Exhaust Manifold Sections Have Locations To Install Temperature Sensors{1059}