Piper Navajo PA-31 Service Manual page 581

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PIPER NAVAJO SERVICE MANUAL
NOTE: INBOARD FUEL TANK VENT CHECK VALVE NOT USED WHEN OPTIONAL NACELLE FUEL CELLS ARE INSTALLED.
1009
19 20
1.
COMBUSTION HEATER
2. FUEL
FLOW GAUGE
3. FUEL
INJECTOR
4. ENGINE
DRIVEN FUEL
PUMP
5. FUEL
SHUTOFF VALVE
6. EMERGENCY
FUEL
PUMP
7.
FUEL BOOST PUMP
8. PRESSURE
SWITCH
9. EMERGENCY CROSSFEED
VALVE
10.
FUEL PRESSURE
GAUGE
11.
FUEL QUANTITY
GAUGE
12. FUEL
TANK VENT CHECK VALVE
13. OUTBOARD
FUEL TANK
14. INBOARD
FUEL TANK
15. FUEL FILTER
QUICK DRAIN
16. FUEL FILTER
17. FUEL
TANK SELECTOR
VALVE
18. CROSSFEED
QUICK
DRAIN
VALVE
19.
FUEL TANK
QUICK DRAIN
20. FUEL
TANK FINGER
SCREEN
21. FUEL SENDER
SELECTOR
SWITCHES
22. SURGE
TANK WITH FLAPPER
VALVE
23. LOW FUEL
WARNING PROBE
24. NACELLE FUEL CELL (OPTIONAL)
Figure 9-lb. Fuel System Schematic (PA-31-325)
Revised: 9/24/81
FUEL SYSTEM
3A13