1980/01/07 Caterpillar


Fuel Heaters Are Now Available For Field Installation {1296}

Usage:




See The Model Application Chart For Models

During operation in cold temperature conditions, some customers have had fuel filter problems in areas where lighter grade fuels are not easily available. Heavier grade fuels have a higher "cloud point", which is the temperature where wax becomes solid particles in the fuel. When atmospheric temperatures are lower than the "cloud point" of the fuel, the solid particles of wax fill the fuel filters and stop the flow of fuel. To prevent this problem, fuel heaters are now available for field installation. The new fuel heaters use engine coolant to heat the fuel and prevent the development of solid wax particles.

Two different heater assemblies are used in the two new heater groups, as shown in the Group Components Chart. The 8N9455 Heater Assembly fits between the spin-on fuel filter and the filter base. Where a double filter is used, two heater groups are needed. The 8N9593 Heater Assembly is remotely mounted, and connected into the fuel supply line to the fuel filter. This heater can be used for applications where clearances do not permit use of a filter-mounted heater. For some applications, an optional installation is to use a remotely mounted fuel filter with a filter-mounted heater.

The new fuel heaters are adaptable to most Caterpillar products. For some installations, small changes and/or modifications are necessary. Special Instructions are available for installation, as shown in the Group Components Chart.

When a fuel heater is used, and atmospheric temperatures are below approximately 32°F (0°C), the recommendation is to start the engine and run it at low idle rpm until the coolant hoses to the heater become warm. This will keep the amount of wax in the fuel filter at a minimum.

Caterpillar Information System:

1980/01/07 Do Not Use 5B1161 Wire To Check Main Bearing And Connecting Rod Bearing Clearances; Use Plastigage {0653,1203,1219,1230}
1980/01/07 Three New Pressure Gauges Are Now Available {0651}
OPERATING ENVIRONMENT-AND ITS EFFECT ON SR4 GENERATORS Operating Environment - And Its Effect On SR4 Generators
C4.4 Industrial Engine and C4.4 Engine for Genset Electrical System - (Interactive) C4.4 Industrial Engine and C4.4 Engine for Genset Electrical System - (Interactive)
C18 Generator Set with EMCP3 Electrical System 276-4751 C18 Generator Set with EMCP3 Electrical System 276-4751
C15 Off-Highway Truck Engine Electrical System 236-6230-03 C15 Off-Highway Truck Engine Electrical System 236-6230-03
3500B and 3500C Locomotive Engine Electrical System 254-5452-05, 155-2555-04 3500B and 3500C Locomotive Engine Electrical System 254-5452-05, 155-2555-04
3500B Industrial Engine Electrical System 254-5451-03 3500B Industrial Engine Electrical System 254-5451-03
3512B Oil Well Servicing Engine Electrical System (Serial # 2AF463-UP) 254-5450-01 3512B Oil Well Servicing Engine Electrical System (Serial # 2AF463-UP) 254-5450-01
3412C MCS Marine Auxiliary Gen-Set Engine Electrical System 3412C MCS Marine Auxiliary Gen-Set Engine Electrical System
3406C MCS Marine Auxiliary Gen-Set Engine Electrical System 3406C MCS Marine Auxiliary Gen-Set Engine Electrical System
C32 Generator Set with EMCP3 Electrical System 292-4084-03 C32 Generator Set with EMCP3 Electrical System 292-4084-03
1980/01/07 New Exhaust Valve For Special Engine Applications {1104,1105}
1980/01/07 Important: XT3 And XT5 Hose Assemblies Must Be Fabricated And Installed Correctly For Maximum Service Life {5057}
1980/01/07 8N1831 Fuel Nozzle Assembly Now Approved For Use In 1693 Truck Engine; Chart For Applications Of 8N1831 And 7N5005 Fuel Nozzle Assemblies {1254}
1980/01/07 Improved Ring Seal Used At Rear Of Crankshaft {1161}
1980/01/14 Use The FT1481 Bracket To Hold The 1P2371 Micrometer In Position During Bore Size Measurement{0655,0663}
1980/01/14 New Raw Water Engine Oil Cooler Is Used{1378}
1980/01/21 A Spring With A Lower Rate Is Now Used In The Fuel Filter Group To Give Less Fuel Pressure{1261}
1980/01/21 New Piston Groups Have The Piston Pin Bore Off-Center, Away From The Thrust Side Of The Piston{1214}
1980/01/21 Cooling System Improvements Prevent Expansion Tank Leakage{1354,1380,1153}
1980/01/21 Extended Shafts Now Available For Front Power Takeoff Units{3055}
1980/01/21 New Fuel Injection Nozzle Assembly Used{1254}
1980/01/28 New 6V199 Socket For Use On Fasteners In Areas With Limited Clearance{0612}
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