Smiths Aerospace
Electronic Systems – Malvern
DOC NO.0134ED
MAINTENANCE MANUAL SUPPLEMENT
BOEING B737-100/200/300/400/500
28-41-04
8. Advance to parameter P03 and input the fuel density obtained in step 4.C.2.
NOTE: 6.763 LB/Gallon is displayed as 6763
0.8101 KG/Liter is displayed as 8101
NOTE: If actual density of fuel is outside the limits permitted for parameter P03, the limit closest to the
actual density should be entered. For example, if density is 6.437 lbs/gal, 6600 should be entered for
“P03”.
9. Depress both “UP” and “DOWN” select buttons simultaneously. The indicator will advance to
parameter 4. After displaying “P04”, the display will change to show the last entered value.
10. Determine the fuel weight entered into the tank by multiplying the density obtained in step 4.C.2 by
volume of fuel added to tank.
NOTE: The fuel weight must be rounded to the nearest 20 or 50 units, depending on size of tank (as
allowed by indicator).
11. Enter the fuel weight value obtained in step 4.C.10 into the indicator for parameter P04.
12. Depress both “UP” and “DOWN” select buttons simultaneously. The indicator will advance to
parameter P05. After displaying “P05” the display will change to show “816”.
13. Press the “Press to Test” switch for the fuel quantity gages at the PILOT’S panel. The indicator will
count down from 60 and advance to parameter 6.
14. Depress both “UP” and “DOWN” select buttons simultaneously until parameter P10 is reached. Check
that value is reasonable for Wet Compensator.
15. Depress both “UP” and “DOWN” select buttons simultaneously to advance to parameter P11. Check
that value is reasonable for Wet Tank Probes.
16. Depress both “UP” and “DOWN” select buttons simultaneously until parameter P05 is reached.
17. Adjust the displayed value to the value obtained in step 4.C.14 for parameter P10, except with the last
digit truncated, by using the select buttons as required. For example, if “P10” is 11060, enter 1106 for
“P05”.
18. Depress both “UP” and “DOWN” select buttons simultaneously to advance to CAL.
19. Step through all parameters 1 through parameter 11, and record values on DCTU label. Worksheet 1
is also provided for record keeping purposes if so desired. Stop when indicator displays “CAL”.
20. Open “FUEL QTY” circuit breaker.
21. Place “CAL-RUN” jumper in “RUN” mode for Center Tank.
EFFECTIVITY
22. Close “FUEL QTY” circuit breaker. Verify the indicator displays full fuel quantity within 1%.
CONFIG
4.1
Page 523
July 15/02
Airplanes with Smiths 2307 Model Fuel Quantity Indicators
with TSU
(GULL SYSTEM TESTER)
