1999/03/15 Caterpillar


New Fuel Priming Pump Assembly Used {1258}

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),
994D (3TZ) Wheel Loaders;
5130 (7TJ, 5ZL),
5130B (4CS),
5230 (7LL) Excavators

Description of Change: A new fuel priming pump assembly is used on the 3500 engines in these machines. The new pump has several design changes which provide:

* An improved knob to rod joint.
* Improved torque retention.
* Improved resistance to vibration induced wear. These changes will result in the new fuel priming pump assembly providing increased service life.

Adaptable To: The new 162-3905 Fuel Priming Pump Assembly is a direct replacement for the 2W-2605 Fuel Priming Pump Assembly on the 3500 engines in the above machines.

Caterpillar Information System:

1999/03/15 Blocks Added To Turbocharger Groups To Prevent Bearing Housing Rotation In Low Pressure Turbochargers {1052}
1999/03/15 Additional Brake Studs Are Required To Increase Brake Pressure On Certain Off-Highway Trucks {4061,4267}
1999/03/15 New Diaphragm And Cap Available For Certain Front Brake Oil Cooler Diverter Valves {5737}
1999/03/15 New Tachometer Signal Generator Improves Reliability {7487}
1999/03/15 Special Instruction, SEHS9960, Available For Procedure To Install Three-Point Hitch With Draft Control And Special Instruction, REHS0426, Available For Procedure To Install Draft Control For Use With Aftermarket Three-Point Hitches {7120}
1999/03/15 New Fuel Level Sender Increases Reliability {7481,7483}
1999/03/15 Improved Machine Performance Panel Has Better Visibility And Changes Factory Defaults {7490}
1999/03/08 New 152-8256 (115V) And 154-4853 (220V) Air Conditioning Refrigerant Recovery, Recycling, And Manual Recharging Station For R134A Refrigerant {7320,1809}
1999/03/08 New 150-7762 And 150-7745 (Trailer Mounted) Hot Water Pressure Washers For Cleaning Large Components {0680}
1999/03/08 Use 138-8447 Aerosol Rust Preventative As A Corrosion Inhibitor {0645}
1999/03/08 Use 170-9227 Reamer Shims To Aid In Reaming Engine Injector Sleeves {1254}
1999/03/08 Use 157-3719 Spanner For Removing And Installing Bosch Fuel Pumps {1251}
1999/03/15 New Camshaft Cover Seal, Crankshaft Cover Seal, And Valve Cover Seal Help Prevent Oil Leaks {1107,1150,1200}
1999/03/15 Supplement To Correct Final Drive Torque Values {4092,4055}
1999/03/15 New Bolts Available For Rear Axles In High Load Applications {3260,3278}
1999/03/15 Correction To SENR6765 Hub Bolt Torque {5062,5070}
1999/03/15 Grain Elevator Components Are Now Stainless Steel {6931}
1999/03/15 New Top Piston Rings Available {1215}
1999/03/15 Caterpillar Prelub Troubleshooting {1400,1469}
1999/03/22 Improved Duo-Cone Seals Available {4192,7561}
1999/03/22 Improved V-Belt Sets Now Used On Alternator And Fan Drive Pulleys {1357}
1999/03/22 New Exhaust Temperature Sensor {1919}
1999/03/22 New Hook Cable Installation Procedure Clarifies Cable Routing {5417}
1999/03/22 New Boom Cable Installation Procedure Clarifies Cable Routing {6301}
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