1999/02/15 Caterpillar

Bolts, Washer, And Spacers Grouped Into Fastener Groups In Engine Cylinder Head Groups {1100}

Usage:

777B (4YC),
777C (4XJ),
777D (3PR, 2YW),
785 (8GB),
785B (6HK),
785C (1HW, 5AZ),
789 (9ZC),
789B (7EK),
789C (2BW),
793 (3SJ),
793B (1HL),
793C (4AR, 4GZ) Off-Highway Trucks;
776B (6JC),
776C (2TK),
776D (5ER),
784B (5RK),
784C (2PZ) Off-Highway Tractors;
854G (1JW) Wheel Tractors;
D11N (74Z, 4HK),
D11R (8ZR, 9TR, 9XR) Tractors;
992G (7HR),
994 (9YF) Wheel Loaders;
5130 (7TJ, 5ZL),
5130B (4CS),
5230 (7LL) Excavators

Description of Change: The related bolts and washers, and the related bolts, washers, and spacers for 3500 and 3500B Engine cylinder head groups have been clustered into 2 new fastener groups. The fastener groups were created to make it easier to order the related bolts, washers, and spacers.

Locations of the 131-0420 (1) and 131-0421 Fastener Groups in a typical engine cylinder head group.

Adaptable To: The new 131-0420 Fastener Group consist of one 7N-1961 Bolt and one 5P-8248 Washer. The new 131-0421 Fastener Group consist of one 7N-1961 Bolt, one 5P-8248 Washer, and one 9Y-0635 Spacer. If the washer or spacer are not needed the 7N-1961 Bolt may still be ordered individually. The chart lists the 3500 and 3500B Engine cylinder head groups that included the new fastener groups.

Caterpillar Information System:

1999/02/15 Improved Brake Hubs Now Available For Certain Off-Highway Trucks {4061,4251}

1999/02/15 Thrust Buttons For Planetary End Housing Assembly Salvage Now Available {3150,3169}

1999/02/15 New Right Side Platform Design Will Reduce Cracking Between Platform And Cowling {7253}

1999/02/15 Supplement To Correct Seal Ring Positioning {3159,7555}

1999/02/15 Special Instruction, REHS0151-01, Available For Procedure For Reinforcing And Bolting On Guide Blocks {4198}

1999/02/15 Spacers Now Used On 1R-1210 Midwheels {4192,4150}

1999/02/08 New VIMS Application Guide Available {7601,0374}

1999/02/08 Correct Seal Usage Improves Service Life {7555}

1999/02/08 Supports On Accelerated Pre-Separation Group Are Now Serviced {6934}

1999/02/08 New Battery Increases Starting Power {1401}

1999/02/08 New Feeder Control Group Available for Certain Paver Models {5643}

1999/02/08 New Valves Improve Harvester Head Service Life {0587}

1999/02/15 Correction To Operation & Maintenance Manual SEBU6955 {0374,0375,7560}

1999/02/15 New Thrust Washer Improves Service Life Of Differential Group {3258}

1999/02/15 New Brake Disc Wear Specifications {4250}

1999/02/15 Proper Throttle Line Servicing Procedure {1269}

1999/02/15 Filters On X-Series Machines {1054,1308,1261,5068}

1999/02/15 Purging Lines Have Been Added To Conveyor Lines Group {5264,5643,6631}

1999/02/15 Emulsion System Changes {5615}

1999/02/15 New Actuator Motors Available for Power Screed Options {6640}

1999/02/22 Supplement To Correct Torque Specifications On Differential And Bevel Gear {3258,3270,3281,3283,3284}

1999/02/22 Improved Steering Spherical Race Bearing Available {4303,4300}

1999/02/22 Production Process Change Eliminates Anti-Rotation Retaining Pin In Rear Wheel Station For Certain Off-Highway Trucks {4208,4234}

1999/02/22 Use Special Care With 143-3629 O-Ring Seals {1071}