Subtask 30-11-42-860-050
B. Aircraft Maintenance Configuration
(1)
Make sure that the slats are fully extended (Ref. TASK 27-80-00-866-004).
(2)
Make sure that the access platform is in position.
(3)
Make sure that the access panels 522AB(622AB), 522CB(622CB) and 522BT(622BT) are removed.
Subtask 30-11-42-865-052
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 5CV B06 49VU ANTI ICE/WING/CTL 2DL C02 49VU ANTI ICE/WING/MONG 1DL C01
121VU FLIGHT CONTROLS/SLT/CTL/SYS2 7CV R21
4. Procedure
_________ Subtask 30-11-42-420-058
A. Preparation for Installation
(1)
Remove the blanking caps from the applicable ducts that are open.
(2)
Use a clean MISCELLANEOUS (Material No. 19-003) with CLEANING AGENTS (Material No. 11-026) to clean the flanges of the ducts that are open.
(3)
Examine the ducts that are open for correct condition. Make sure that the faces of the flanges have no scores or distortion.
(4)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(5)
Do an inspection of the component interface and/or the adjacent area.
(6)
Install the blanking caps on the ends of the open ducts.
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Subtask 30-11-42-420-050 R B. Installation of the Anti-Ice Ducts
(1)
Remove all the applicable blanking caps immediately before you install the ducts.
(2)
To install the duct (24):
(Ref. Fig. 401/TASK 30-11-42-991-001)
R (a) Install the seal (2) in the end of the duct (3).
(b)
Put the duct (24) in position in the duct (3) and correctly align it with the anti-ice valve.
(c)
Install the clamp (22) and TORQUE the clamp nut to between 0.39 and 0.51 m.daN (34.51 and 45.13 lbf.in).
(d)
Put the ends of the bonding straps (23) and (27) in position on the duct (24).
(e)
Install the screw (28), the washer (26) and the nut (25) (Ref. TASK 20-28-00-912-004).
(3) To install the duct (3) with the duct (24) removed: (Ref. Fig. 401/TASK 30-11-42-991-001, 402/TASK 30-11-42-991-002)
R (a) Put the new seal (36) in position on the inboard end of the duct (37).
(b)
Put the blast tube (8) temporarily in position in the approximate center of the duct (3).
(c)
Put the duct (3) together with the blast tube (8) in position in the duct (37).
(d)
Move the blast tube (8) outboard. Align the bolt holes of the blast tube (8) with the bolt holes on the D-nose section of Rib
9.
(e)
Put the cradle (7) in position and install the bolts (5) and (11) and the washers (6).
(f)
Push the duct (3) against the cradle (7) and install the cradle (4), the bolt (10) and the nut (12).
(g)
Put the end of the bonding strap (16) in position on the duct (3).
(h)
Install the screw (18), the washers (17) and (14) and the nut
(13) (Ref. TASK 20-28-00-912-004).
(i)
Put the end of the bonding strap (20) in position on the duct (3).
(j)
Install the screw (21), the washer (19) and the nut (15) (Ref. TASK 20-28-00-912-004).
(k)
Install the duct (24) as given before.
(4) To install the duct (37) with the duct (3) removed: (Ref. Fig. 401/TASK 30-11-42-991-001, 402/TASK 30-11-42-991-002)
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