Piper Cherokee LANCE, Service Manual

Page: 467 / 854

PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
03/27/08 VIII - FUEL SYSTEM
2J7
TABLE VIII-II. SENDER/FUEL QUANTITY GAUGE TOLERANCES
( PA-32R-300 and those 32-300’s above S/N 32-7940001 )
Figure 8-4. Fuel Gauge (PA-32R-300)
Actual Fuel in Gauge Reading
Tank (U.S. Gallons) (U.S. Gallons)
49 Full F
42 40
32 30 Pointer
22 20 ± Width
12 10
2 Not More Than Zero
0 EMPTY White Dot
e. Place 2 gallons of fuel in the wing fuel tank that relates to the gauge and sender unit being checked.
f. With 12 to 14-volts DC supplied to the electrical system and the master switch in the “ON”
position, the needle should be centered on the “O” radial mark; plus 0, minus 1 needle width.
g. If the needle does not read within the above tolerance, remove the sender wire from the rear of the
gauge and check the resistance to ground through the sender circuit. If the resistance is not within 5
± 1 ohms, replace the inboard sender. Then, recheck as specified above.
h. Add fuel to the tanks in accordance with the information given in Table VIII-II until tanks are full.
Observe the gauge reading at each 10 gallon increment.
i. With the tanks full and master switch “ON,” the needle should be centered on the “F” radial mark
within ± 1 needle width. If not within this tolerance, adjust the electrical adjustment (refer to Figure
8-4) just sufficiently to bring it within tolerance; do not center the needle.