(5) Make sure that the guide (30), the bracket (34) and the clamp (33) are positioned correctly. TORQUE the nuts (31) on the bolts (32) to between 0.14 and 0.16 m.daN (12.38 and 14.15 lbf.in).
Subtask 28-21-49-420-051
C. Installation of the Outboard Fuel Pump Fairing
NOTE : Install the outboard fuel pump fairing in this sequence:
____
-
the intermediate fairing (17)
-
the rear fairing (16)
-the front fairing (20) and the cover plate (22) assembly. NOTE : Sealant is not used between the fairings (20), (17) and (16) and
____
the lower wing skin.
(1)
Loosen the nuts (31), the bolts (32) and the clamp (33) on the bracket (34) and the guide (30).
(2)
Install the intermediate fairing (17) as follows:
(a)
Hold the intermediate fairing (17) in position near the lower wing skin.
(b)
Position the harness (25) inside the intermediate fairing (17).
(c)
Engage the key-hole slots in the intermediate fairing (17) with the wing skin bolts.
(d)
Move the intermediate fairing (17) forward to engage the bolts fully.
(e)
Make sure that the harness (25) is not caught between:
-
the key-hole slot positions on the intermediate fairing (17) and the wing skin
-
the edge of the intermediate fairing (17) and the wing skin.
(3)
Install the rear fairing (16) as follows:
(a)
Make sure that the intermediate fairing (17) is correctly installed and pushed tightly against its stop.
(b)
Hold the rear fairing (16) in position near the wing skin.
(c)
Position the harness (25) inside the rear fairing (16).
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(d)
Pull the harness (25) lightly in a rearwards direction. If necessary, push unwanted harness up through the guide (30) and the clamp (33) into the conduit (35).
(e)
Engage the key-hole slots in the rear fairing (16) with the wing skin bolts.
(f)
Move the rear fairing (16) forward to engage the bolts fully.
(g)
Make sure that the:
-forward end of the rear fairing (16) goes inside the intermediate fairing (17) (out-of-wind)
-
harness (25) is not caught between the key-hole slot positions on the rear fairing (16) and the wing skin
-
harness (25) is not caught between the edge of the rear fairing
(16) and the wing skin.
(h)
Make sure that there is a clearance of 3.0 mm (0.1181 in.) to 4.0 mm (0.1574 in.) between the rear fairing (16) and the intermediate fairing (17). If necessary, cut and de-burr the overlap at the rear of the intermediate fairing (17) to get the correct dimension.
(i)
Install the bolt (15), the bush (14) and the nut (13). Tighten the bolt (15).
(j)
Fill the clearance between the rear fairing (16) and intermediate fairing (17) with SEALANTS (Material No. 09-016).
(4) Install the front fairing (20) and the cover plate (22) assembly as follows:
(a)
Make sure that the intermediate fairing (17) and the rear fairing
(16)
are correctly installed.
(b)
If the front fairing (20) and the cover plate (22) have been disassembled, continue as follows:
1_ Loosely assemble the front fairing (20) to the cover plate
(22) with the bolt (24), the washer (23) and the bush (18).
2_ Loosely assemble the cover plate (22) complete with the front
fairing (20) to the wing skin with the bolts (21).
3_ Make sure that the front fairing (20) aligns with the
intermediate fairing (17).
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4 Use a wax crayon to mark on the cover plate (22) around the
_ edge of the front fairing (20).
5 Remove the bolts (21) and remove the cover plate (22),
_
complete with the front fairing (20).
6 Remove the bolt (24), the washer (23) and the bush (18).
_
Remove the front fairing (20) from the cover plate (22).
7 Apply SPECIAL MATERIALS (Material No. 05-064) to the mating
_ surface of the front fairing (20). Do not apply the special material to the surface of the front fairing that will touch the wing skin.
8 Apply a small quantity of SEALANTS (Material No. 09-018) to
_ the mating surfaces of the front fairing (20) and the cover plate (22). Do not apply sealant to the surface of the front fairing that will touch the wing skin.
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