1995/05/01 Caterpillar

New Turbocharger Support Group Provides Improved Serviceability{1050,1052}

Usage:

793 (3SJ),
793B (1HL) Trucks

Description of Change: A new turbocharger support group is used in the 9Y-8924 Turbocharger Support Group. See Illustration 1. The new group is made from bolted together components. These components are available for parts service. The former group was welded together and the components were not available for parts service.

Adaptable To: Illustration 2 and Chart A identify the components of the new 115-0565 Turbocharger Support Group. This new support group is part of the 9Y-8924 Turbocharger Support Group. Chart B identifies the components that must be removed from the 9Y-8924 Turbocharger Support Group before installing the new 115-0565 Turbocharger Support Group.

Illustration 1. Location of new 115-0565 Turbocharger Support Group in the 9Y-8924 Turbocharger Support Group.

Illustration 2. Identification of components in the 115-0565 Turbocharger Support Group.

Caterpillar Information System:

1995/05/01 Undersize Bearing Cone Available For The Axle Housing Outer Wheel Bearing{4215}

1995/05/01 Improved Wiring Eliminates Hitch Control Fault 8 Code and Adds Additional Features{1408,5000,7314,1901}

1995/04/24 Engine Connecting Rod Assembly Includes New Rod Eye Sleeve Bearing {1218,1219}

1995/04/24 Parts Are Now Available To Relocate The Relay Panel {1422}

1995/04/24 Tools for Disassembly and Assembly of Four Piece Axle Arrangements {0722,3250,3257,3259}

1995/04/24 Longer Gearshift Lever Improves Gearshift Operation {3070}

1995/04/24 Interface Seal Available For 70 Pin Connector Between Electronic Unit Injector (EUI) Wiring Harness And Electronic Control Module (ECM) {1408}

1995/04/24 Serviceable Parts For Custom Option Engine Prelube Group {1319}

1995/04/17 Reduce Air Compressor Operating Cycles By Using Boosted Air Pressure From Air Inlet Manifold{1800}

1995/04/17 A Larger Air Compressor Has Been Added To Provide Increased Air Flow Rate{1800}

1995/04/17 Move Turbocharger Boost Sensor Block To Allow Relocation Of Air Compressor Inlet Hose{1800}

1995/04/10 Procedure To Increase Fuel Transfer Pump Pressure {1256}

1995/05/01 Procedure To Tighten Bolts And To Shim Rear Drive Axle Is Available{3278}

1995/05/01 Use Correct Lubricants With Track Rollers And Idlers{4159,4180,7581}

1995/05/01 Engine Air Filters{1054}

1995/05/08 Brake Release Pump For Towing Is Available{4354}

1995/05/08 Serviceable Parts Available For Water Spray Pumps Used On Asphalt Compactors{5614}

1995/05/08 Selecting The Correct Turbocharger And Wastegate Orifice For 3500 Engines Used In 793 Trucks{1052,1057}

1995/05/08 Selecting The Correct Turbocharger, Wastegate Orifice, And Personality Module For 3500 Engines Used In 793B Trucks{1052,1057,1902}

1995/05/08 New Valve Cover And Valve Cover Base Assembly Used{1107,1120}

1995/05/08 Larger Bolts Provide Improved Bearing Retention For Increased Fan Bearing Life{1359}

1995/05/08 New Plugged Filter Indicator Switch Improves Service Life{7450}

1995/05/08 New Front And Rear Crankshaft Seal Groups Used{1160,1161}

1995/05/08 New Electronic Control Group (Engine Coolant Temperature Sensor) Used{1906}