1994/02/07 Caterpillar

New Turbocharger Groups And New Turbocharger Cartridge Groups Have Improved Thrust Bearing And Turbine Ring Seal{1052,1053}

Usage:

784B (5RK) Tractors 785 (8GB),
785B (6HK) Trucks;

Description of Change: New turbocharger groups and turbocharger cartridge groups are available. These new groups have six pad thrust bearings to provide increased thrust capacity and improved resistance to scuffing during startup and shutdown when marginal lubrication situations can occur. The new groups also include a new stainless steel turbine seal ring that provides increased seal life.

Adaptable To: Chart A identifies the new and former turbocharger groups, applicable remanufactured turbocharger groups, and applications.

Chart B identifies the new and former turbocharger cartridge groups, applicable remanufactured cartridge groups, and applications.

The new 108-9340 Seal Ring is a direct replacement for the 4W-1222 Seal Ring.

Caterpillar Information System:

1994/02/07 12 And 24 Volt DC Work Lights Are Available{0600}

1994/02/07 Longer Grease Hose Assembly Used In Fan Belt Tightener Groups{1358,1359}

1994/02/07 New Piston Body Has Improved Bonding Between Iron Band And Aluminum Body{1214}

1994/02/07 New Magnetic Drain Plug For Vibratory Bearing Reservoir Provides Early Warning Of Wear{6606}

1994/02/07 Suspension Control Valve Mounting Group Bolt Torque Specification Is Reduced To Prevent Control Valve Sticking And Scuffing{7214}

1994/02/07 Sump Guard Assembly (Crankcase Guard) Is Deeper And Has Thicker Material To Improve Clearance And Resist Bending{7151}

1994/02/07 New Wheel Bearing Adjustment Procedures{4208}

1994/02/07 New Pinion And Seal Assembly Replaces The Former Carbon Seal{3280,3254,3250}

1994/02/07 Cover Assembly Protect Hydraulic Tank Sight Glasses{5056}

1994/02/07 New Radio Mount Available For B Series Backhoe Loaders Equipped With Air Conditioning{7338}

1994/02/07 New Radiator Hose Clamp Allows Easier Tightening{1380}

1994/02/07 Lock Valve Group With A Relief For Right Blade Lift Cylinder Is Available On Motor Graders{5102,5100}

1994/02/07 Cylinder Head Gaskets Improved To Provide Better Fire Ring Retention{1124}

1994/02/07 Fuel Injection Pump Improvements{1251}

1994/02/14 Multipurpose Tractor Oil (MTO) Is Usable In All Challenger Implement Hydraulic And Combined Implement And Steering Hydraulic Systems{5068,5050,5450}

1994/02/14 Air-To-Air Aftercooler Assembly Mounting Brackets Improved{1063}

1994/02/14 Engine Coolant Temperature Gauge May Run High{7400,7453}

1994/02/14 Thicker Retaining Ring Is Available For Use With CAT® GraderBit Assemblies{6151,6150}

1994/02/14 Publications Available For Off Highway Truck Retrofits{1290,1631,1900,3100,3150}

1994/02/14 Improved Wheel Bearing Cone Anti-Rotation System Prevents Wheel Bearing Cones From Rotating On The Axle Housing{4208,4234}

1994/02/14 Shorter Stud Used To Improve Sealing Between The Radiator Cap Assembly And Filler Adapter{1382,1353}

1994/02/14 New Universal Joint Groups Have Improved Sealing{3251,3253}

1994/02/14 Improved Mounting Method For Hydraulic Quick Hitch Pins{5133}

1994/02/21 New Parts Service Friction Disc Available For Machines With Shift Harshness Complaints {3150,3155}