1996/02/26 Caterpillar


Service Manual And Service Kits Available For Engine Variable Speed Fan Clutch{1359}

Usage:


768C (02X),
772B (64W),
776C (2TK) Tractors;
769C (01X),
771C (3BJ),
773B (63W),
775B (7XJ) Off-Highway Trucks

SUPPLEMENT: 05/26/97

Service Magazine; February 26, 1996; Page 4; "Service Manual And Service Kits Available For Engine Variable Speed Fan Clutch".

Disregard these articles and see the article titled "Variable Speed Fan Drives" in this issue.

--------------- END SUPPLEMENT ---------------

SUPPLEMENT: 02/26/96

Service Magazine; February 26, 1996; Page 4; "Service Manual And Service Kits Available For Engine Variable Speed Fan Clutch"for 768C, 772B, 776C Tractors; 769C, 771C, 773B, 775B Trucks.

The part number for the overhaul kit is incorrect. The correct part number is 121-5767 Overhaul Kit.

--------------- END SUPPLEMENT ---------------

The Service Manual, SENR8603, Variable Speed Fan Clutch, is available to help service the 6I-4427 Fan Drive Group on the engines in the above machines. This service manual is available through normal Caterpillar literature ordering channels. The service manual describes how the fan drive operates and provides disassembly and assembly information.

The 121-5756 Seal Kit and 121-5757 Overhaul Kit are available to service the 6I-4427 Fan Drive Group. The seal kit includes the components required to replace the front and rear shaft seals and wear sleeves. The overhaul kit includes all the components of the seal kit and other components required for a complete rebuild of the fan drive group.

Caterpillar Information System:

1996/02/19 New Brackets Help Prevent Damage To Engine Fuel Injection Lines Groups{1252}
1996/02/19 New Material Used In O-Rings And Optional New Block Side Cover Replacement{1201}
1996/02/19 New Bolts And Washers Used In Rear Axle Spindle To Rear Axle Joint Provides Additional Strength To Prevent Bolt Breakage{3260}
1996/02/19 Use Of BIO HYDO Oils in Off-Highway Trucks{3022}
1996/02/12 Closed Engine Crankcase Breather System Maintenance And Repair {1317,1107}
1996/02/12 New Components Used In Governor And Fuel Pump Drive Group{1288}
1996/02/12 New Pressure Switch Assembly Is Available For Fuel Applications; 9G-8011 Pressure Switch Assembly Should Not Be Used In Fuel Applications {7414}
1996/02/12 Replaceable Drawbar Wearplate Eliminates Wear On Support Assembly{7105,7119}
1996/02/05 Lubricant Used On Cylinder Head Bolts Changed{1100}
1996/02/05 Fuel Injector Sleeve Replacement Tooling{0703,1125}
1996/02/05 New Duo-Cone Seal Retainer And Backing Plate Reduces Oil Leaks In The Service And Parking Brake Group{4251,7561}
1996/02/05 New Stronger Drawbar Reduces Deformation In Severe Loading Situations{7105,7119}
1996/02/26 Magnetic Plug Now Used On Front Wheels{4208}
1996/02/26 New Rubber Belt Step Available{7254}
1996/02/26 New Hoist Valve Reduces Leakage{5136}
1996/02/26 New Troubleshooting Guide Is Needed To Test The Grade/Slope System{7219,7569}
1996/02/26 New Engine Cylinder Head Injector Sleeve Used In Both Mechanical Unit Injection (MUI) And Hydraulic Electronic Unit Injection (HEUI) Engines{1125}
1996/03/04 Ring Seals No Longer Required At Six Locations In Turbocharger Groups{1052}
1996/03/04 New Interaxle Differential Groups Have New Thrust Discs For Improved Service Life{3258,3287}
1996/03/04 Dimensions For Radio Installation {7338}
1996/03/04 Flash Programming Capability Is Required{1901,1902}
1996/03/11 New Transmission Input Shaft Seal Prevents Leakage{3189,3401}
1996/03/11 Undercarriage Gauge and Belt Width Options{4150,4199,4198}
1996/03/11 Improved Mounting And Valve Group (Retarder Control Valve) Can Be Installed To Improve Retarder Control Valve Service Life{3123}
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