D.
Procedure

 S 944-010
 WARNING: OBEY THE FUEL TANK ENTRY PRECAUTIONS (AMM 28-11-00/201).
_______ FAILURE TO OBEY THE FUEL TANK ENTRY PRECAUTIONS COULD CAUSE INJURY OR DAMAGE.
 (1)
Obey the fuel tank entry precautions (AMM 28-11-00/201).

 (2)
Go into the center fuel tank.

 S 014-007
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 (3)  S 394-008Apply a faying surface seal between the vent stringer door and the float drain valve with the sealant (BMS 5-26 Type II Classes A and B) (AMM 51-31-01/201).
 (4)  S 424-012Align the float drain valve with the holes in the vent stringer door.
 (5)  S 424-013Install the bolts and the washers.
 (6)  S 034-011Remove all unwanted sealant from the hole in the vent stringer door or the vent float valve.
 (7)  S 394-014Apply a seal around the outer edge of the vent float valve flange and over the bolt heads with the sealant (BMS 5-26 Type II Class B) (AMM 51-31-01/201).
 (8)  S 214-015Make sure the float in the float drain valve moves freely.
 (9)  S 414-016Install the baffle doors.
 S 414-017

 (10) Install the center tank access door, 134AZ (AMM 28-11-02/401).

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 SURGE TANK PRESSURE RELIEF VALVE - MAINTENANCE PRACTICES
________________________________________________________
 1.  General_______
 A.  A pressure relief valve for the surge tank is installed on the surge tank access doors, 543AB and 643AB.
 B.  This procedure contains four tasks. The first task removes the pressure relief valve. The second task installs the pressure relief valve. The third task is an inspection/check of the pressure relief valve. The fourth task manually operates the pressure relief valve.
 TASK 28-13-04-002-013
 2.  Remove the Pressure Relief Valve (Fig. 201)________________________________
 A.  References
 (1)  
AMM 28-11-03/401, Surge Tank Access Door

 B.  
Access

 (1)  
Location Zones 543 Surge Tank - Rib No. 21 to No. 23 (Left) 643 Surge Tank - Rib No. 21 to No. 23 (Right)
　
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