1992/02/24 Caterpillar

Be Sure To Use Correct Connector/Connectors Between Fuel Transfer Pump Outlet And Tube To Fuel Filter{1274,1256}

Usage:

3116 ( 7SF ) Truck Engines

Be sure to use the correct connector/connectors between the fuel transfer pump outlet and the tube that goes to the fuel filter. Earlier engines with a 7C9651 or 7E9735 Fuel Filter Lines Group, have two connectors between the fuel transfer pump outlet and the tube to the fuel filter. A 7W7381 Connector is screwed into the fuel transfer pump outlet and a 6V8636 Connector is screwed into the 7W7381 Connector. The tube to the filter is connected to the 6V8636 Connector.

Later engines with a 4P2159 or 4P2076 Fuel Filter Lines Group, have only one connector between the fuel transfer pump outlet and the tube to the fuel filter. The 7E9898 Connector is screwed into the fuel transfer pump outlet and the tube to the fuel filter is connected to that connector.

The 6V8636 and 7E9898 Connectors look similar, but the length of the 9/16-18 threaded end of the 6V8636 Connector is 2.5 mm (.10 in) longer than the 9/16-18 threaded end of the 7E9898 Connector. If a 6V8636 Connector is screwed in to the fuel transfer pump outlet the added length will interfere with the outlet check valve in the pump. This can restrict the fuel flow from the fuel transfer pump.

Caterpillar Information System:

1992/02/24 1P8116 O-Ring Seal Available To Service Unit Injectors{1290}

1992/02/17 New Fuel Line Assemblies And Adapter Assembly Used{1252}

1992/02/17 New Cylinder Head Gasket Used{1124,1100,1101}

1992/02/17 New 100 Amp Alternators Available For Applications With Large Electrical Requirements{1405}

1992/02/10 Light Green Gasket Material On Secondary Air Filter Elements May Stick To Filter Housing{1054,1051}

1992/02/10 The Letter "I" Now Used In Part Numbers{0374}

1992/02/03 Many Commercial Folded Core Radiators Can Be Converted To Multiple Row Module Radiators{1353}

1992/02/03 New Oil Filler Tube Assembly Helps Prevent Cracking{1316}

1992/02/03 Oil Capacity Increased{1302,1326}

1992/02/03 New Cast Iron Valve Rocker Arm Groups Provide Improved Bearing Retention{1123}

1992/02/03 5P7437 Adapter (Part Of 8T5301 Diesel Timing Adapter Group) Must Be Modified To Work On Current Fuel Lines.{0782}

1992/02/03 Master Bolts Have Been Removed from the Parts Consist List for Link Assemblies{4171}

1992/03/02 Procedure To Repair Oil Leak At Rear Camshaft Cover{1221}

1992/03/02 New Combustion Seal (O-Ring Seal) Used In Unit Injection Pump Group{1290}

1992/03/02 Fuse Blocks Have Been Improved And Are Now Serviced{4450}

1992/03/09 New Hose In Turbocharger Oil Lines Group Resists Deterioration Caused By Heat {1307}

1992/03/23 Unit Injector Test Specifications Have Been Updated {0374,1290}

1992/03/23 Troubleshooting Electrical Noise Problems {1900}

1992/03/23 New Electronic Control Groups (Rack Position Sensor And Timing Position Sensor) Provide Increased Reliability {1905,1911}

1992/03/23 Turbocharger Bearings Available For Garrett (Formerly AiResearch) Turbochargers Changed {1053}

1992/03/23 Rotor Shaft Length Changed {4457,4472}

1992/03/23 New Utility Voltage Pickup And Dropout Adjustment Range For Contactor Type Automatic Transfer Switches {4450}

1992/04/06 Procedure For Putting 9U5839 Liquid Gasket Material On Cylinder Liner {1216}

1992/04/06 9U5839 Liquid Gasket Material Available For Use With Aluminum {0649,0648}