1999/06/14 Caterpillar


Suggested Ways To Increase 3500 Unit Injector Service Life {1290}

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),
797 (5YW) 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

The above machines are powered by 3500 Diesel Engines. A Caterpillar 2 micron fuel filter is recommended for all 3500 Diesel Engines. The new high pressure fuel systems require increased protection from abrasive wear. If the 2 micron fuel filter plugs, DO NOT replace the plugged filter with a larger micron fuel filter. The 2 micron filter plugged because it was doing it's job of cleaning the fuel and protecting the injectors.

ALWAYS USE CLEAN FUEL. This means using fuel tank filters and day tanks/fuel trucks that can keep the fuel free of dirt and water. Other Useful Tips

* The fuel tank should be periodically drained.
* Clean the inside of the fuel tank as needed.
* Use a water separator when necessary.
* Do not fill fuel filters with fuel before installing.
* Fuel filters should be changed when a monitoring device indicates a high differential pressure.

Caterpillar Information System:

1999/06/14 Rear Window Latch Improved {7310}
1999/06/14 Improved Differential Lube Pump Shaft Prevents Leakage {3258,4009,4129,4134}
1999/06/07 Addition Of Rubber Flashing To Transverse Beam{6648}
1999/06/07 Checking The Oil Level In Axles Properly Reduces Erroneous Readings{3268}
1999/06/07 Correction To Specifications Manual, RENR3003; "Feed Roller Motor For HH75 Harvester Head"{0374,5058}
1999/06/07 Correction To Parts Manuals For 149-2743 Hydraulic Tank Group{5056}
1999/06/07 New Turn Signal Switch Improves Service Life{1611}
1999/06/07 New Injector Is Now Available{1290}
1999/06/07 New Cover Plate Improves Visibility{7262}
1999/06/07 Common Charcoal Gray Paint Used{7581}
1999/06/07 New Automated Cylinder Cutout Test Available With Electronic Technician (ET) Version 2.4 Software Release{0781,1920}
1999/06/07 Improved Lift Cylinder Rod Now Used{5102,7120}
1999/06/14 Correction To Service Manual Module SEBU6757; Operation & Maintenance Manual {0374,0375,1105}
1999/06/14 Chassis And Cab Harnesses Must Be Replaced As A Set {3168,3030}
1999/06/14 New Special Instruction For 793 Off-Highway Truck Front And Rear Wheel Adapter Kit Installation Available {4200,4200}
1999/06/14 Service Installation Of 165-7948 Check Valve {4304}
1999/06/14 New Fender Available {7252}
1999/06/14 New Door Gas Spring Has Improved Service Life {7308}
1999/06/14 Dimensions For Articulated Hitches, Lift Arms, Front And Rear Levers, And Oscillating Rear Axle Assemblies Is Now Available In A New Special Instruction {3260,3268,6116,6118,6119,6125,6126,6127,7057,7069,7100}
1999/06/14 Recommended Lubricant For Cab Door Locks And Hood Locks {7251,7273,7308}
1999/06/14 New Fuel Nozzles Resist Adapter Cracking And Leaking {1254}
1999/06/21 New Components Provide Improved Sealing In Engine Exhaust Manifold Groups {1059}
1999/06/21 New Oil Pump Group Used {1304}
1999/06/21 Correction To Electronic Implement Control System Manual, SENR5891-02; "Normal Operation" {0374,5000,5700}
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