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PT (TYPE G) AFC FUEL PUMP
PT (TYPE G) AFC VS FUEL PUMP
The PT fuel system is used exclusively on Cummins diesels. The identifying letters “PT” are an abbreviation of pressure-time. The STC system is used on Cummins diesels to advance the injection timing under idle or light load conditions. The STC system includes fuel pump, supply lines, drain lines, fuel passages, oil passages, check valves, STC oil control valve, and STC injectors. NOTE: Refer to Procedures 006-026 (Injector) , 006-024 (Fuel Supply Lines), and 006-037 (STC Oil Control Valve (Mechanical)) in Section 6, for repairs to the STC injectors, fuel lines, and STC oil control valve.The CELECT™ and CELECT™ Plus fuel systems are used exclusively on Cummins diesels. The CELECT™ and CELECT™ Plus fuel systems consist of the fuel pump, Electronic Control Module (ECM), ECM cooling plate, supply lines, drain lines, engine wiring harness, sensors, and injectors. NOTE: For repairs to the CELECT™ or CELECT™ Plus sensors, ECM, and engine wiring harness, refer to Procedures 019-004 (Barometric Air Pressure Sensor), 019-017 (Engine Coolant Level Sensor), 019-019 (Engine Coolant Temperature Sensor), 019-038 (Engine Position Sensor (EPS)), 019-059 (Intake Manifold Air Temperature Sensor), 019-061 (Intake Manifold Pressure Sensor), 019-091 (Vehicle Speed Sensor, Magnetic Pick Up), 019-134 (Ambient Ait Temperature Sensor), 019-031 (Electronic Control Module (ECM)), and 019-043 (Engine Wiring Harness) in Section 19 of the Troubleshooting and Repair Manual CELECT™ Plus engines, Bulletin 3666130.
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