Mack MP7 - Fuel System

DESCRIPTION AND OPERATION
Page 35
Fuel System
23
Figure 23 — Fuel System Diagram
1. Fuel Pump
2. Fuel Tank and Inlet Tube
3. EECU Cooler
4. Fuel Filter Housing
5. Fuel Pre-Filter
6. Water Cup
7. Full-Flow (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
A. With Non-Catalyzed DPF B. With Catalyzed DPF