1992/03/23 Caterpillar

Turbocharger Bearings Available For Garrett (Formerly AiResearch) Turbochargers Changed {1053}

Usage:

Reference: This article supersedes the article with the same title in the September 23, 1991 issue of Service Magazine.

Reference: Service Magazine; August 20, 1979; Page 6; "Turbocharger Bearings Are Now Available In More Different Sizes For Better Turbocharger Reconditioning."

Turbocharger bearings for the Garrett (formerly AiResearch) Turbochargers have changed. All 0.13 mm (.005 in) undersized bearings have been canceled. Two 0.51 mm (.020 in) oversized bearings have been added for extended housing service. Chart A identifies the bearings that have been canceled. Chart B identifies all the serviceable bearings for Garrett Turbochargers.

NOTE: The two washers (1) included in these bearing kits should be installed on the turbine wheel side (2) of the sleeve bearings. See the illustration. Other turbocharger models using wear washers will NOT necessarily be located in the same positions. See the Disassembly and Assembly Module in the appropriate Service Manual for installation instructions for a particular turbocharger. The bearing retainer (snap) rings on ALL turbochargers should be installed with the smooth side of the ring toward the journal bearing.

Location of the two washers (1) and the turbine wheel end (2).

Caterpillar Information System:

1992/03/23 New Electronic Control Groups (Rack Position Sensor And Timing Position Sensor) Provide Increased Reliability {1905,1911}

1992/03/23 Troubleshooting Electrical Noise Problems {1900}

1992/03/23 Unit Injector Test Specifications Have Been Updated {0374,1290}

1992/03/09 New Hose In Turbocharger Oil Lines Group Resists Deterioration Caused By Heat {1307}

1992/03/02 Fuse Blocks Have Been Improved And Are Now Serviced{4450}

1992/03/02 New Combustion Seal (O-Ring Seal) Used In Unit Injection Pump Group{1290}

1992/03/02 Procedure To Repair Oil Leak At Rear Camshaft Cover{1221}

1992/02/24 Be Sure To Use Correct Connector/Connectors Between Fuel Transfer Pump Outlet And Tube To Fuel Filter{1274,1256}

1992/02/24 1P8116 O-Ring Seal Available To Service Unit Injectors{1290}

1992/02/17 New Fuel Line Assemblies And Adapter Assembly Used{1252}

1992/02/17 New Cylinder Head Gasket Used{1124,1100,1101}

1992/02/17 New 100 Amp Alternators Available For Applications With Large Electrical Requirements{1405}

1992/03/23 Rotor Shaft Length Changed {4457,4472}

1992/03/23 New Utility Voltage Pickup And Dropout Adjustment Range For Contactor Type Automatic Transfer Switches {4450}

1992/04/06 Procedure For Putting 9U5839 Liquid Gasket Material On Cylinder Liner {1216}

1992/04/06 9U5839 Liquid Gasket Material Available For Use With Aluminum {0649,0648}

1992/04/06 Engine Oil Recommendations Have Been Changed {0374,1300}

1992/04/06 New Caterpillar Engine Oil Nomenclature {0374,0645,1300}

1992/04/06 New PRELUB Systems Available For Medium To Large Caterpillar Construction Equipment {1319}

1992/04/06 New And Improved Operation And Maintenance Manuals Available {0374}

1992/04/06 New Turbocharger Groups With Ceramic Turbine Wheels Used {1052}

1992/04/06 High Capacity Oil Pan Available {1302}

1992/04/06 New Bracket Assembly Added To Exhaust Manifold Group {1059}

1992/04/13 New Cylinder Kits Available{1213}