(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
Do an inspection of the component interface and/or the adjacent area.
(4)
Lubricate the new items that follow with FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012):
-
the O-ring (4)
-
the O-ring (7)
-
the O-ring (10)
-
the O-ring (29).
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B. Installation of the Main-Transfer-System Clack Valve
(1)
Install the new O-rings (4) and (29) on the flanged pipe (30).
(2)
Install the new O-ring (10) on the seating (11).
(3)
Install the new O-ring (7) on the adaptor (24).
(4)
Install the flanged pipe (30) through the hole in RIB 1.
(5)
Install the nut (2) and the split ring (3) on the flanged pipe (30).
(6)
Remove the blanking cap from the pipe (1).
(7)
Put the flanged pipe (30) in position on the pipe (1).
(8)
Loosely engage the nut (2) on the pipe (1).
(9)
Install the washers (6) on the bolts (5).
(10)
Put the adaptor (24) in position on the flanged pipe (30).
(11)
Install the bolts (5), the washers (8) and the nuts (9).
(12)
Tighten the nut (2).
(13)
Put the seating (11) in position on the adaptor (24).
(14)
Intall the bolts (26), the washers (23) and the nuts (22).
(15)
Seal the bolts (26) and the nuts (22) with SEALANTS (Material No. 09-001).
(16)
Put the clack valve assembly (13) and the distance tubes (14) and
(21) in position on the seating (11).
(17)
Install the spindle (12).
(18)
Carefully put the shroud assembly (16) in position on the adaptor (24). Adjust the position of the spindle (12), as necessary, so that you can put the shroud assembly (16) in position.
(19)
Install the bolts (25) and the nuts (20).
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(20)
Install the washer (27) on the bolt (28). Install the bolt (28), the washer (19), the bonding strap (15), the washer (18) and the nut (17) (Ref. TASK 20-28-00-912-002).
(21)
Seal these items with SEALANTS (Material No. 09-001):
-
the nuts (9) and (20)
-
the bolts (5) and (25).
(22)
Make sure that the clack valve assembly (13) and the spindle (12) are free to move in the seating (11).
(23)
Make sure that the clack valve assembly (13) is flat against the seating (11) when closed.
Subtask 28-26-44-410-050
C. Close Access
(1)
Install the fuel pipes that you removed (Ref. TASK 28-00-00-400-001).
(2)
If necessary, install the applicable Fuel Quantity Indicating (FQI) probe (Ref. TASK 28-42-15-400-005):
-
for the LH wing, install the FQI probe 54QT1
-
for the RH wing, install the FQI probe 54QT2.
(3)
Make sure that the work area is clean and clear of tool(s) and other items.
(4)
Make sure that all of the bonding straps are correctly installed and attached (Ref. TASK 20-28-00-912-002), before you install the fuel-tank access panels.
(5)
Remove the HOOK-COVER (RIB2-SURGE DOORS) from the applicable spring-loaded surge-door and carefully close:
-
for the LH wing, the door 540BZ
-
for the RH wing, the door 640BZ.
(6)
Install the applicable access panels (Ref. TASK 57-27-11-400-001) (Ref. TASK 57-17-11-400-001):
-
for the LH wing, install the panels 540AB, 147AZ
-
for the RH wing, install the panels 640AB, 148AZ.
(7)
Remove the access platform(s).
(8)
Close the applicable MLG door(s) (Ref. TASK 32-12-00-410-001):
-
for the LH wing, close the door 734
