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REFERENCE DESIGNATION
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**ON A/C 001-049, 051-061, 101-103, 201-203,
28-21-42-991-001 Fig. 401
**ON A/C 301-399,
28-21-42-991-001-B Fig. 401A
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, 28-21-42-991-001-A Fig. 401B **ON A/C ALL
3. Job Set-up
__________
**ON A/C 001-049, 051-061, 101-103, 201-203,
(Ref. Fig. 401/TASK 28-21-42-991-001)
**ON A/C 301-399,
(Ref. Fig. 401A/TASK 28-21-42-991-001-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. 401B/TASK 28-21-42-991-001-A)
1EFF : ALL 1 28-21-42Page 402 1 1 Aug 01/05 1 1 1CES 1
Fuel-Pump Suction Valve
Figure 401/TASK 28-21-42-991-001
R 1EFF : 001-049, 051-061, 101-103, 201-203, 1 28-21-42Page 403 1 1 May 01/05 1 1 1CES 1
R Fuel-Pump Suction Valve
R Figure 401A/TASK 28-21-42-991-001-B
R 1EFF : 301-399, 1 28-21-42 Page 404
1 1 May 01/04
1 1
1CES 1
Fuel-Pump Suction Valve Figure 401B/TASK 28-21-42-991-001-A
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-21-42Page 405 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1 **ON A/C ALL
Subtask 28-21-42-941-053
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 28-21-42-650-050
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 28-21-42-010-050
C. Get Access
(1)
Put the access platform below zone 540(640).
(2)
Remove the applicable wing access panel 540AB(640AB) (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-001).
(3)
Open the surge door 540BZ(640BZ) to get access to the fuel-pump suction valve.
(4)
Install the HOOK-COVER (RIB2-SURGE DOORS) to hold the applicable surge door open.
4. Procedure
_________ R **ON A/C 001-049, 051-061, 101-103, 201-203,
(Ref. Fig. 401/TASK 28-21-42-991-001)
R 1EFF : ALL 1 28-21-42Page 406 1 1 May 01/05 1 1 1CES 1
**ON A/C 301-399,
(Ref. Fig. 401A/TASK 28-21-42-991-001-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. 401B/TASK 28-21-42-991-001-A) **ON A/C ALL
Subtask 28-21-42-020-050
A. Removal of the Fuel-Pump Suction Valve
(1)
Disconnect the fuel-pipe connector nut (5) and pull it away from the fuel-pump suction valve (3).
(2)
Remove the nuts (8), the bolts (1) and the bolts (2). Remove the bonding strap tag (9), attached to the bonding strap (7), from the bolt (1).
(3)
Remove the fuel-pump suction valve (3) from its installed position.
(4)
Remove and discard the O-ring (4) from the fuel pipe (6).
(5)
Seal the open end of the fuel pipe (6) with a blanking cap.
1EFF : ALL 1 28-21-42Page 407 1 1 Aug 01/05 1 1 1CES 1 TASK 28-21-42-400-001
Installation of the Fuel-Pump Suction Valve
WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING
_______ NOTICES ARE IN POSITION.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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No specific safety barriers
No specific access platform 3.0 m (9 ft. 10 in.)
B. Consumable Materials
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