FUEL PRESSURE SENDER TESTING. (Refer to Chart 7301.)
The fuel pressure sender works on the relationship of pressure to resistance. As the pressure rises the
r e s i stance rises and alters the position of the needle in the instrument.
1. The sender may be tested by removing it from the aircraft and applying a calibrated pressure to the
pressure port.
2 . Attach an ohmmeter to the two terminals on the reverse side of the pressure port, and check the
r e s i stances as shown in Chart 7301 .
3 . To test the sender and gauge in conjunction with each other, disconnect the gauge from the aircraft
s y stem, connect it in series (using a 12 to 14-volt system) with the sender, and proceed as follows:
A.
Slowly increase the pressure to the sender till 9 + 0.5 psi is reached.
B.
Let the system set at the pressure for a couple of seconds, recheck the pressure, and lower the
pressure to 8.0 psi.
C.
Reduce the pressure to 0.5 psi. The gauge should indicate 0.5, +1, - 0 needle widths.
— NOTE —
The sender and gauge are nonadjustable, therefore that which
does not meet specifications should be replaced.
4. Reinstall the gauge and sender.
CHART 7301. FUEL PRESSURE SENDER TEST SPECIFICATION
The gauge (Piper P/N 86750-2) should indicate 8 psi +1/2. - 0 needle widths.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
73-30-02
Page 73-09
Revised: May 15, 1989
3F12
Pressure (Psi)
0
.5
5
8
10
Resistance (Ohms)
10
11.5
42
60
72
Tolerance (Ohms)
—
+1, - 0
±1
+1/2, - 0
±1
Summary of Contents for SEMINOLE PA-44-180
Page 38: ...CHAPTER DIMENSIONS AND AREAS 1B14...
Page 49: ...CHAPTER LIFTING AND SHORING 1C1...
Page 53: ...CHAPTER LEVELING AND WEIGHING 1C5...
Page 58: ...CHAPTER TOWING AND TAXIING 1C10...
Page 62: ...CHAPTER PARKING AND MOORING 1C14...
Page 65: ...CHAPTER REQUIRED PLACARDS 1C17...
Page 70: ...CHAPTER SERVICING 1C22...
Page 98: ...CHAPTER STANDARD PRACTICES AIRFRAME 1E2...
Page 108: ...CHAPTER ENVIRONMENTAL SYSTEM 1E12...
Page 189: ...CHAPTER AUTOFLIGHT 1H21...
Page 192: ...CHAPTER COMMUNICATIONS 1H24...
Page 202: ...CHAPTER ELECTRICAL POWER 1I10...
Page 228: ...CHAPTER EQUIPMENT FURNISHINGS 1J12...
Page 233: ...CHAPTER FIRE PROTECTION 1J17...
Page 238: ...CHAPTER FLIGHT CONTROLS 1J24...
Page 304: ...2A18 CHAPTER FUEL...
Page 325: ...2B17 CHAPTER HYDRAULIC POWER...
Page 357: ...2D1 CHAPTER ICE AND RAIN PROTECTION...
Page 414: ...CHAPTER LANDING GEAR 2F13...
Page 479: ...2I6 CHAPTER LIGHTS...
Page 488: ...2I16 CHAPTER NAVIGATION AND PITOT STATIC...
Page 503: ...2J7 CHAPTER OXYGEN...
Page 524: ...2K6 CHAPTER VACUUM...
Page 535: ...2K19 CHAPTER ELECTRICAL ELECTRONIC PANELS AND MULTIPURPOSE PARTS...
Page 546: ...INTENTIONALLY LEFT BLANK PA 44 180 180T AIRPLANE MAINTENANCE MANUAL 2L6 PIPER AIRCRAFT...
Page 547: ...2L7 CHAPTER STRUCTURES...
Page 582: ...CHAPTER DOORS 3A18...
Page 593: ...CHAPTER STABILIZERS 3B8...
Page 604: ...CHAPTER WINDOWS 3B22...
Page 611: ...CHAPTER WINGS 3C10...
Page 624: ...CHAPTER PROPELLER 3D1...
Page 643: ...CHAPTER POWER PLANT 3D21...
Page 667: ...CHAPTER ENGINE FUEL SYSTEM 3F1...
Page 681: ...CHAPTER IGNITION 3F16...
Page 712: ...CHAPTER ENGINE INDICATING 3H1...
Page 730: ...CHAPTER EXHAUST 3H19...
Page 734: ...CHAPTER OIL 3I1...
Page 743: ...CHAPTER STARTING 3I11...
Page 755: ...CHAPTER TURBINES 3J1...