1998/04/13 Caterpillar

Increased Capacity Air Compressor For Off-Highway Trucks {1803}

Usage:

776B (6JC),
776C (2TK),
776D (5ER),
784B (5RK) Off-Highway Tractors;
777B (4YC),
777C (8JL, 4XJ),
777D (3PR),
777D (2YW),
785 (8GB),
785B (6HK) Off-Highway Trucks

Reference: Service Magazine; March 25, 1996; Page 20; "Larger Air Compressors Available"

Description of Change: An increased capacity air compressor group is now available for the above Machines. The new air compressor group has a air capacity of 16.5 cfm. The former air compressor group has a air capacity of 13.2 cfm.

Adaptable To: The 113-8193 Air Compressor Group is a direct replacement for the former 117-0071 Air Compressor Group. The new air compressor group is effective with the Machine Engines listed in Chart A. The differences in the servicable parts are shown in Chart B. The new air compressor is adaptable to the Machines Engines with the effectivity listed in Chart C. The Machine Engines prior to the effectivity in Chart C need to complete the procedure listed in the Reference Article before installing the new air compressor group.

Caterpillar Information System:

1998/04/13 Special Instruction; REHS0078-01; "Retrofit Procedure For Spring Operated Exhaust Diverter" On 777, 777B And 777C Off-Highway Trucks Is Available {1061}

1998/04/13 New Gears Used To Improve Service Life {4050}

1998/04/13 New Transmission Input Hose Design Increases Service Life {3154}

1998/04/06 Improved Material Deflector For Primary Conveyor Is Available {6621}

1998/04/06 New Custom Product Support Literature Is Available For 793C Trucks Equipped With 3Z-6422 Hood Conversion Group (Factory Install) {0374,7251}

1998/04/06 Access Hole Dimensions To Measure Brake Lining Pad Thickness {4254,4256}

1998/04/06 Proper Communication Radio Installation Reduces Interference With Machine Electronics {1400}

1998/04/06 Modify Engine Enclosure To Install Door Covers {7273,7263}

1998/04/06 Improved Adjustment Procedure For Steering Console Cylinder Eliminates Steering Console Drift {5258}

1998/04/06 Circle Assembly Reinforcement For Severe Applications {6154,6157}

1998/04/06 Supplement For Tandem Housing Assembly {4062,4064,3007}

1998/04/06 Additional Tandem Sight Protection Added {4064}

1998/04/13 Updated Wall Chart; SENR6389-01; "785B Final Drive Group Straight Bearing Assembly Wall Chart" For 785B Off-Highway Truck wheel Stations, Is Available {4208,4051}

1998/04/13 Updated Wall Chart; RENR1978; "785B Final Drive Group Tapered Bearing Assembly Wall Chart" For 785B Off-Highway Truck Wheel Stations, Is Available {4208,4051}

1998/04/13 Updated Wall Chart; SENR5669-01; "789B Final Drive Group Straight Bearing Assembly Wall Chart" For 789B Off-Highway Truck wheel Stations, Is Available {4208,4051}

1998/04/13 Updated Wall Chart; RENR1979; "789B Final Drive Group Tapered Bearing Assembly Wall Chart" For 789B Off-Highway Truck Wheel Stations, Is Available {4208,4051}

1998/04/13 Dimensions For Installing Attachment Tailgate Mounting Hardware On Articulated Truck Dump Bodies {7271,7258}

1998/04/13 Supplement Setting Effectivity For Dimensions For Installing Tailgate Attachment {7271,7258}

1998/04/13 Correction To Service Manual Modules SENR6059 And SENR1371 {7601,7603}

1998/04/13 Rain Caps For Paver Ventilation Systems {1072,6654}

1998/04/13 New Harness For The High Ambient Cooling Fans {1408}

1998/04/13 Correct Routing For Screed Electrical Cables {1408}

1998/04/13 Procedure For Checking Main Pressure Relief On Propel System {3203}

1998/04/13 Correction To Purging Track Tension {4197}