S 424-024
(7)
Tighten the valve body to 200 pound-inches.
S 414-023
(8)
For the drain valve in the main tank, install the main tank access door 541AB or 641AB (AMM 28-11-01/401).
S 414-022
(9)
For the drain valve in the surge tank,
install the surge tank access door 543AB or 643AB
(AMM 28-11-03/401).
S 414-021
(10)
For the drain valve in the center tank,
connect the drain line to the drain valve.
S 414-020
(11)
For the drain valve in the center tank, close the ECS equipment bay access door 194CR or 194CL (AMM 06-41-00/201).
S 634-019
(12)
Refuel the fuel tank (AMM 12-11-01/301).
S 214-018
(13)
Make sure there is no fuel leakage.
S 604-017
(14)
Drain a small quantity of fuel from the applicable fuel tank to do a check on the drain valve (AMM 12-11-03/301).
(a)
If the drain valve does not operate correctly, replace the drain valve.
TASK 28-11-05-004-009
4. Remove the Sump Drain Valve (Fig. 401)___________________________
A. Equipment
(1)
Adapter, Sump Drain Valve R/I - B28001-1
Adapter, Main and Surge Tanks - B28001-2
Adapter, Center Tank - B28001-5
B.
References
(1)
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels
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757
MAINTENANCE MANUAL
C. Access
(1)
Location Zones 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 194CL ECS Equipment Bay Access Door (Left) 194CR ECS Equipment Bay Access Door (Right)
D.
Procedure
S 014-004
(1)
For the drain valve in the center tank, open the ECS equipment bay access door 194CR or 194CL (AMM 06-41-00/201).
S 034-013
(2)
To remove the drain valve from the center tank,
disconnect the drain line from the drain valve.
S 024-014
(3)
Use the adapter and remove the valve body from the tank sump fitting.
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