Fuel System 22 Figure 22 — Fuel System Diagram The fuel pump attaches with the power steering pump to the flywheel housing at the rear left side. It turns on the same shaft as the power steering pump. The common drive gear meshes with the auxiliary idler driven by the crankshaft gear. At 600 rpm, the pump delivers a minimum 100 kPa (14.5 psi), and at 1200 rpm, 300 kPa (43.5 psi). At 400–550 kPa (58–80 psi), the gallery regulator valve opens to control fuel gallery pressure. Page 28 DESCRIPTION AND OPERATION 1. Fuel Pump 2. Fuel Tank and Inlet Tube 3. EECU Cooler 4. Fuel Filter Housing 5. Fuel Pre-Filter 6. Water Cup 7. Secondary (Main) Filter 8. Fuel Gallery 9. Unit Injector 10.
Pressure Regulator Valve 11. Pump Safety Valve (Pressure Regulator) 12. One-Way Valve 13. Hand Pump Handle 14. Water Level Sensor 15. Water Discharge Control Switch (Instrument Panel) 16. Electrical Water Drain Valve 17. Automatic Air Bleed Valve (closes when filter removed) 18. Service Port (Pressure Gauge) 19. Supply Pressure Sensor 20. Fuel Heater (Optional) 21. Service Shutoff Valve (closes when filter removed) 22. One-Way Valve (Hand Priming) 23. Automatic Air Bleed Valve 24. Fuel Tank Breather 25. AFI Shut-Off Valve 26. To Aftertreatment Fuel Injector (AFI) 27. Deaeration Valve