C. Consumable Materials
(1) B00130 Alcohol - Isopropyl, to clean the equipment
D. References
(1)
AMM 06-41-00/201, Fuselage Access Doors and Panels
(2)
AMM 12-33-01/301, Cold Weather Maintenance
(3)
AMM 28-11-00/701, Fuel Tanks
(4)
AMM 28-22-06/401, Automatic Sumping Jet Pump
E. Access
(1)
Location Zones
193 Wing to Body - Forward Lower Half (Left)
194 Wing to Body - Forward Lower Half (Right)
541 Main Tank - Rib No. 5 to No. 17 (Left)
543 Surge Tank - Rib No. 21 to No. 23 (Left)
641 Main Tank - Rib No. 5 to No. 17 (Right)
643 Surge Tank - Rib No. 21 to No. 23 (Right)
(2)
Access Panels
193GL Fuel Drain Access Door (Left)
194DR Fuel Drain Access Door (Right)
F. Drain the Main and Surge Fuel Tank Sumps
S 213-002
(1)
Find the main or surge fuel tank sump drain valves as shown on Fig. 301.
S 483-003
(2)
Put the top end of the fuel sampling receptacle against the bottom of the poppet valve on the sump drain valve (View A).
S 683-004
(3)
Drain each fuel tank sump until the fuel that goes into the container does not contain water.
S 083-005
(4)
Remove the fuel sampling receptacle to let the sump drain valve close.
S 213-028
(5)
Do a visual inspection of the fuel in the container.
(a)
If you see red dye in the fuel, do this task: Fuel Tanks Contaminated with Red Dye (AMM 28-11-00/701).
(b)
If you see other contamination, do these steps: 1) Clean the fuel sampling equipment with isopropyl alcohol and dry completely.
2) With a sterilized glass container, get another sample of fuel.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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MAINTENANCE MANUAL
3) Do this task: Do a Detection Check for Contamination with Microbes or Fungus (AMM 28-11-00/701).
G. Drain the Center Fuel Tank Sumps
S 013-006
(1)
Open the applicable fuel drain access door 194DR or 193GL (AMM 06-41-00/201).
S 483-007
(2)
Put the container below the drain line fitting on the sump drain valve (View C).
NOTE:____Use the container only. The fuel sampling receptacle is not necessary.
S 863-008
(3)
Hold the drain line near the poppet valve of the sump drain valve and push up to open the sump drain valve (View B).
S 683-009
(4)
Drain each fuel tank sump until the fuel that goes into the container does not contain water.
S 863-010
(5)
Release the drain line to close the sump drain valve.
S 213-029
(6)
Do a visual inspection of the fuel in the container.
(a)
If you see red dye in the fuel, do this task: Fuel Tanks Contaminated with Red Dye (AMM 28-11-00/701).
(b)
If you see other contamination, do these steps: 1) With a sterilized glass container, get another sample of fuel.
2) Do this task: Do a Detection Check for Contamination with Microbes or Fungus (AMM 28-11-00/701).
S 413-011
(7) Close the applicable fuel drain access door 194DR or 193GL (AMM 06-41-00/201).
TASK 12-11-03-653-012
3. Drain the Fuel Tank Sumps (Fig. 302)_________________________
A. General
(1)
This procedure is used to drain all fuel that remains in the fuel tank after defueling and before purging and fuel tank entry.
(2)
The best airplane attitude to drain the sumps is a pitch of 0.30 degree nose-down and a roll of zero degrees.
B. Equipment
(1) Container - applicable for fuel.
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