1983/07/11 Caterpillar

New Fuel Lines And New Mounting Design Now Used{1252}

Usage:

All D379B, D398B, D399 Industrial And Generator Set Engines

Description of Change: New fuel injection line assemblies and hardware are now used on the above engines. The new fuel injection lines have a layer of zinc on them to prevent rust. The lines are also bent differently so that they can be held in place better. The new hardware is used to support the fuel lines.

With the former fuel injection lines there have been some failures that were caused by vibration and corrosion.

Adaptable As: The new parts are shown in the charts. The new fuel line assemblies can be used as replacements for former fuel line assemblies.

Illustration 1. Location of new parts in the 3N2688 Fuel Injection Group.

Illustration 2. Location of new parts in the 3N2689 Fuel Injection Group.

Illustration 3. Location of new parts in the 3N2690 Fuel Injection Group.

Caterpillar Information System:

1983/07/11 Remanufactured Unit Injectors Are Available{1290}

1983/07/11 Use A Pipe Plug For Repairs of Small Holes In Castings{1201,1350}

1983/07/11 New Oil Filter Elements Available For Engine, Transmission And Hydraulic Applications{1318,3067,3179,5068}

1983/07/04 New O-Ring Seal For Water Lines Groups Is Made Of Different Material For More Resistance To Twists And Damage{1380,1362}

1983/07/04 Test Information For New 4W1819 Fuel Nozzle{1254}

1983/07/04 New Camshaft Gear Has More Resistance To Pitting{1210,1212}

1983/07/04 Damaged Lifter Bores In 3400 Series Engines Can Be Used Again{1201,0374}

1983/07/04 New Tachometer Drive Group Adapter Assemblies Have A Larger Input Shaft{7462,7487}

1983/07/04 6V6142 And 6V6143 Installers Must Be Used To Install Crankshaft Seals And Wear Sleeves{0622,0626,1160,1161}

1983/07/04 Different Method Can Be Used To Take Oil Sample{5057,0372}

1983/07/04 Improved Governor Control Shaft And Seal Will Help Prevent Oil Leakage{1265}

1983/06/20 Frequency Meter Failure; Make Sure It is Connected To The Correct Voltage{7471,7002}

1983/08/08 New 6V7070 And 6V7800 Digital Multimeters Available{0651}

1983/08/08 Failure Of Ballstud In Control Valve Can Cause Problem With Control Of Vessel{3313}

1983/08/08 Hydraulic Boring Machine Available{0664}

1983/08/08 New Housing Assembly, Front Housing And Carrier Used In 8L4230 And 8L4231 Marine Gear Groups (Twin Disc MG509){3300}

1983/08/08 Special Instruction Has Repair Procedure For 6V4060 Engine Set Point Indicator Group{0651}

1983/08/08 New Procedure And New Tool Can Be Used To Remove Cylinder Sleeves From The Cylinder Block{1222,1223}

1983/08/15 New Service Tools Available{0600}

1983/08/15 Information For Repair Of Hydraulic Fuel Ratio Controls{1278}

1983/08/15 New Filter Orifice Helps Prevent Governor Surge{1264,1263}

1983/08/15 New Actuator Cylinder Used In Air Shutoff{7418,1078}

1983/08/15 New Liner Seat Insert Available{1217}

1983/08/15 Recommendations For Use Of 6V6125 Infrared Thermometer{0651}