A
737-300/400/500MAINTENANCE MANUAL
2) EP GND FUELING
S 865-006
(4) To read the total fuel quantity as shown on the FMCS CDU, do the steps that follow:
(a) If the IRS is not aligned, do these steps: 1) Push the INIT REF button. 2) Make sure the POS INIT page shows on the CDU. 3) Push the LSK (line select key) 6L (adjacent to <INDEX on
the CDU screen display). 4) Make sure the INIT/REF INDEX page shows. 5) Push the LSK (line select key) 3L (adjacent to < PERF on
the CDU screen display). 6) Make sure the PERF INIT page shows with the total fuel quantity shown on the left side of the screen.
(b) If the IRS is aligned, do these steps: 1) Push the INIT REF button. 2) Make sure the PERF INIT page shows with the total fuel
quantity shown on the left side of the screen.
S 215-007
(5) Look at the CDU display (Fig. 501).
NOTE: The display must show the sum of all the fuel indicators
____ with a tolerance of | 100 pounds (| 50 kilograms).
S 965-008
(6)
If the sum is not in the limits, replace the fuel summation unit.
(7)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 865-005
TASK 28-41-82-715-010
3. Fuel Summation Unit Test (Dry Tanks) (Alternative)
__________________________________________________
A. Equipment
(1) System Tester, use one of these:
(a) Model GTF-2, P/N 361-012-001, Gull Airborne Instruments, Inc., 55 Engineers Road, Smithtown, New York, 11787
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
AIRPLANES WITH DIGITAL FUEL QUANTITY ú 28-41-82
INDICATORS ú
ú 02 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 502Jul 12/99
B.
C.
D.
A
737-300/400/500MAINTENANCE MANUAL
(b)
Model PSD 40-1 or PSD 60-1, -2, or -2R, JcAir, Inc., 400 Industrial Parkway, Industrial Airport KS 66031
(c)
Model 8000, Barfied Instrument Corp., Miami, Florida 33142
(2) Test Harness (To connect the system teseer to the fuel tank spar bulkhead receptacle):
-F72731-114 thru 121 as applicable
-PSD40-502 thru -503 (JcAir , 400 Indusrial Parkway, Industrial
Airport, KS 66031), as applicable for use with JcAir equipment)References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 28-41-51/401, Fuel Quantity Indicator
(3)
WDM 28-41-01Access
(1)
Location Zones 221 Center Section Fuel Tank 305 Fuel Tank (Left) 405 Fuel Tank (Right)
Procedure
S 865-011
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-012
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) EP GND FUELING
2) QTY
S 035-013
(3)
Remove two of the three fuel quantity indicators from the pilot's panel (AMM 28-41-51/401).
S 035-014
(4)
Disconnect the electrical connector from the rear of each indicator.
S 495-015
(5)
For each indicator, do these steps:
(a)
Connect the test harness to one of the system test units.
(b)
Connect the test harness to the applicable airplane wire bundle.
(c)
Connect the test harness to the applicable indicator.
S 865-016
(6)
Close these circuit breakers and remove the DO-NOT-CLOSE tags:
(a) P6 Main Power distribution Panel
1) EP GND FUELING
2) QTY
(7)
Permit the system to become warm for five minutes.
S 865-017
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
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