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) Make sure that the safety barriers are in position. Subtask 28-42-46-860-050
B. Aircraft Maintenance Configuration
(1)
Make sure that the applicable fuel tank is defueled (Ref. TASK 28-25-00-650-001).
(2)
Make sure that the remaining fuel has been drained from the applicable fuel tank (Ref. TASK 28-25-00-650-003).
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(3)
Make sure that the access platform is below the access panel 540AB.
(4)
Make sure that the access panel 540AB is removed (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-001).
Subtask 28-42-46-865-051
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU FUEL/FQI/CHAN/1 1QT A13 121VU FUEL/FQI/CHANNEL/1 AND 2 8QT L26 121VU FUEL/FQI/CHAN/2 2QT M27
4. Procedure
_________
(Ref. Fig. 401/TASK 28-42-46-991-001) Subtask 28-42-46-420-051
A. Preparation for Installation
(1)
Clean the component interfaces and the adjacent areas with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Make sure that the parts retained from the removed component are clean and in the correct condition.
Subtask 28-42-46-420-050
B. Installation of the Dualcomp NOTE : You must bond the mating surfaces of the dualcomp (1) (Ref. TASK
____
28-42-46-991-001) (Ref. TASK 20-28-00-912-043).
(1)
Put the dualcomp (1) in position on its support bracket (14).
(2)
Put the P-clips (13) and (15) in position on the dualcomp (1).
(3)
Install the washers (12) and the bolts (11).
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(4)
Apply SEALANTS (Material No. 09-001) to the bolts (11) and the washers (12).
(5)
Remove the blanking caps from the electrical connectors (22), (23) and (24).
(6)
Put the electrical connectors (22), (23) and (24) in poition on the correct connections on the dualcomp (1) (refer to the marker sleeves on the electrical connectors (22), (23) and (24)).
(7)
Install the washers (19), (20) and (21) and the nuts (16), (17) and (18).
(8)
TORQUE the nut (18) to between 28 and 48 lbf.in (0.31 and 0.54 m.daN).
(9)
TORQUE the nut (17) to between 23 and 27 lbf.in (0.25 and 0.30 m.daN).
(10)
TORQUE the nut (16) to between 10 and 14 lbf.in (0.11 and 0.15 m.daN).
(11)
Remove the blanking caps from the electrical connectors (2), (3) and (4).
(12)
Put the electrical connectors (2), (3) and (4) in position on the correct connections on the dualcomp (1) (refer to the marker sleeves on the electrical connectors (2), (3) and (4)).
(13)
Install the washers (5), (6) and (10) and the nuts (7), (8) and (9).
(14)
TORQUE the nut (9) to between 28 and 48 lbf.in (0.31 and 0.54 m.daN).
(15)
TORQUE the nut (8) to between 23 and 27 lbf.in (0.25 and 0.30 m.daN).
(16) TORQUE the nut (7) to between 10 and 14 lbf.in (0.11 and 0.15 m.daN). Subtask 28-42-46-410-050
C. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the access panel 540AB (Ref. TASK 57-27-11-400-001).
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