-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE.
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
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific safety barriers
No specific access platform 3.0 m (9 ft. 10 in.)
98D57004014000 1 HOOK-COVER (RIB2-SURGE DOORS)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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
57-27-11-000-001 Removal of the Access Panel (540AB, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB)
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28-21-45-991-004 Fig. 401
3. Job Set-up
__________ Subtask 28-21-45-941-050
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 28-21-45-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU FUEL/L WING TK/PUMP2 SPLY 7QA N26 121VU FUEL/L WING TK/PUMP1 SPLY 1QA N23 121VU FUEL/R WING TK/PUMP2 SPLY 8QA Q26 121VU FUEL/R WING TK/PUMP1 SPLY 2QA Q23 123VU L WING TK/PUMP 1/STBY SPLY 11QA AD12 123VU R WING TK/PUMP 1/STBY SPLY 12QA AE12
Subtask 28-21-45-650-052
C. 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).
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D. Get Access
(1)
Put the access platform in position below the applicable access panel 540AB(640AB).
(2)
Remove the applicable access panel 540AB, 640AB (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-001).
(3)
Open the applicable access door 540BZ, 640BZ and install the HOOK-COVER (RIB2-SURGE DOORS) (98D57004014000).
4. Procedure
_________
(Ref. Fig. 401/TASK 28-21-45-991-004) Subtask 28-21-45-020-051
A. Removal of the Sequence Valve
(1)
Remove the bolts (8) and then the sequence valve assembly from the pump canister. Remove and discard the O-ring (1).
(2)
Remove the bolts (3), move the mounting plate (9) and the elbow (5) apart and discard the O-ring (2).
(3)
Remove the bolts (4), move the elbow (5) and the sequence valve (7) apart and discard the O-ring (6).
NOTE : It is possible to adapt this procedure to remove only part of
____
the assembly.
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Sequence Valves - Wing-Fuel-Tank Inner-Cell
Figure 401/TASK 28-21-45-991-004
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Installation of the Sequence 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
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