1987/12/21 Caterpillar

Check Screen Assembly In Fuel Transfer Pump Inlet If Low Fuel Pressure Is Experienced{1256}

Usage:

3204 Engines

Often, the fuel transfer pump is mistakenly changed to improve the fuel flow when low fuel delivery (or low fuel pressure) is experienced on a 3204 Engine. If low fuel pressure is experienced, check the screen assembly in the fuel inlet port of the fuel transfer pump body. See the illustration. Plugging of the 2W7671 Screen Assembly, in the fuel transfer pump supply inlet, results in fuel inlet restriction which causes low fuel flow from the fuel transfer pump. The length of the screen assembly may cause the screen to collapse because it is too long for the bore in the fuel transfer pump body. Inspect the screen assembly for damage or plugging. If the screen assembly is plugged or damaged, install a new 2W7671 Screen Assembly.

NOTE: The length of the screen portion of the 2W7671 Screen Assembly has been reduced to 17 mm (.67") to insure correct assembly. The part number did not change.

Location of 2W7671 Screen Assembly.

Caterpillar Information System:

1987/12/21 Improved VR3 Voltage Regulator Available For Earlier Generators{4474}

1987/12/14 Earlier Flywheel Housings Can Be Modified For Use With Later Crankshafts{1157,1202}

1987/12/14 New 1U5803 Connector Repair Kit Available{0785,0782}

1987/12/14 Improved Valve Mechanism Cover Groups{1107}

1987/12/14 Cooling System Troubleshooting Procedures For Generator Sets Equipped With Folded Core Radiators{1350}

1987/12/14 New Gaskets Used In Valve Mechanism Cover Group{1107,1120}

1987/12/14 New Linings Available For Flywheel Clutch Brake Shoe Assemblies{3058}

1987/11/30 Improved Starter Solenoid Prevents Contact Corrosion {1453}

1987/11/30 Engine Oil Refill Capacity Reduced {1318,1326}

1987/11/30 Oil Pan Size Identification {1302}

1987/11/30 The 8T5200 Signal Generator/Counter Group And Its Uses {0783,3000,3012}

1987/11/30 Two New Vacuum Pumps Available For Servicing Air Conditioning Systems {1802,7320}

1987/12/21 New Suction Bell Assemblies, Bolts, And Washers Used In Sump Oil Lines Groups{1307,1315,1304}

1987/12/21 New Gerotor Pump Group Used In 3161 Governors{1264}

1987/12/21 New or Updated Drive Train Information Available In Guidelines For Reusable Parts{0374}

1978/01/09 Improved Water Pump Group Now Used{1361}

1978/01/09 Service Tip: Use Caution When Hydraulically Operated Implements Must Be Lifted With A Hoist While The Engine Is Stopped{5050}

1978/01/09 Improved Seal Used Between Impeller And Bearings On Water Pump Shaft{1361,1371}

1978/01/09 5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster{0621,1216}

1978/01/09 Inner Member Of Caterpillar Coupling Must Be Restrained If The Connection To The Inner Member Is Removed{3252}

1978/01/09 Improved Water Shield For Exhaust Manifold{1067}

1978/01/16 Improved Front Pulley And Damper Groups Use New Damper Adapter With Larger Diameter Bolt Circle For Pulley Bolts{1205}

1978/01/16 Tolerance Added To Valve Clearance Specifications{1105,0374}

1978/01/16 New Turbine Housings Are The Replacement For Three Former Turbine Housings Used On Schwitzer Turbochargers{1052}