1EFF : ALL 1 28-21-00Page 601 1 1 Feb 01/98 1 1 1CES 1 B. Referenced Information

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-11-28-650-003 Pressure Refuel with Automatic Control 28-10-00-910-001 Safety Procedures When You Do Work in a Fuel Tank 28-10-00-910-002 Access to the Fuel Tanks and the Work Areas 28-25-00-650-001 Pressure Defuel 28-25-00-650-003 To Drain Remaining Fuel from the Wing Tanks and the
 Center Tank 28-25-00-869-001 Fuel Transfer 57-27-11-000-001 Removal of the Access Panel (540AB, 540BB, 540CB,
 540DB, 540EB, 540FB, 540GB, 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB)
 57-27-11-400-001  Installation of the Access Panel (540AB, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB)
 **ON A/C 001-049, 051-061, 101-103, 201-203,
 28-21-00-991-006  Fig. 601
 **ON A/C 301-399,
 28-21-00-991-006-B  Fig. 601A

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 Post SB 28-1077 For A/C 001-049,051-061,101-103,201-203,
 28-21-00-991-006-A  Fig. 601B
 1EFF : ALL 1 28-21-00Page 602 1 1 Aug 01/05 1 1 1CES 1

 **ON A/C ALL

 3. Job Set-up
__________ Subtask 28-21-00-941-064
 A. Safety Precautions WARNING : OBEY THE SAFETY PROCEDURES WHEN YOU DO WORK IN A FUEL TANK.
_______
 (1) You must obey the fuel safety procedures (Ref. TASK 28-10-00-910-001) when you do work in a fuel tank.
 (2) Put the safety barriers in position. Subtask 28-21-00-650-063
 B. Fuel Configuration
 (1)
 Defuel the applicable fuel tank (Ref. TASK 28-25-00-650-001).

 (2)
 Drain the remaining fuel from the applicable fuel tank (Ref. TASK 28-25-00-650-003).

 Subtask 28-21-00-010-056
 C. Get Access
 (1)
 Put the access platform in position:

 -
for the left wing, below zone 540

 -
for the right wing, below zone 640.

 (2)
 Remove the wing access panel (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-001):

 -
for the left wing, remove access panel 540AB

 -
for the right wing, remove access panel 640AB.

 (3)
 Get access to the suction valve through the applicable surge door:

 -
for the left wing, open the surge door 540BZ

 -
for the right wing, open the surge door 640BZ.

 (4)
 Install the HOOK-COVER (RIB2-SURGE DOORS) (98D57004014000) to hold the applicable surge door open.

 1EFF : ALL 1 28-21-00Page 603 1 1 May 01/04R 1 1 1CES 1

 4. Procedure
_________
 **ON A/C 001-049, 051-061, 101-103, 201-203,

 (Ref. Fig. 601/TASK 28-21-00-991-006)
 **ON A/C 301-399,

 (Ref. Fig. 601A/TASK 28-21-00-991-006-B) R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499, Post SB 28-1077 For A/C 001-049,051-061,101-103,201-203, (Ref. Fig. 601B/TASK 28-21-00-991-006-A) **ON A/C ALL
 Subtask 28-21-00-280-050
 A. Check Suction Valves For Full and Free Movement
 (1) Manually move the clack valve in the suction valve through its full travel. The clack valve must move freely.
 5. Close-up
________
 Subtask 28-21-00-410-056

 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Remove the HOOK-COVER (RIB2-SURGE DOORS) and let the surge door carefully close.

 (3)
 Install the access panel (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-400-001):

 -
for the left wing, install access panel 540AB

 -
for the right wing, Install access panel 640AB.

 1EFF : ALL 1 28-21-00Page 604 1 1 Aug 01/05 1 1 1CES 1

 Suction Valve - Location
 Figure 601/TASK 28-21-00-991-006

R 1EFF : 001-049, 051-061, 101-103, 201-203, 1 28-21-00Page 605 1 1 May 01/05 1 1 1CES 1

R  Suction Valve - Location 
R  Figure 601A/TASK 28-21-00-991-006-B 
R 1EFF :  301-399,  1  28-21-00 Page 606 
1  1  May 01/04
 1  1
 1CES  1

 Suction Valve - Location
 Figure 601B/TASK 28-21-00-991-006-A

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-21-00Page 607 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1 Subtask 28-21-00-650-062

　
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