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C. Referenced Information
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REFERENCE DESIGNATION
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20-28-00-912-004 Electrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage
R and in the Wings (this does not include the tanks)-21-52-22-000-001 Removal of the Fan Plenum Chamber 10HM5 (11HM5). 21-52-22-400-001 Installation of the Fan Plenum Chamber 10HM5 (11HM5) 28-00-00-910-001 Fuel Safety Procedures 28-43-23-000-001 Removal of the Magnetic Level-Indicator Rod 92QM. 28-43-23-400-001 Installation of the Magnetic Level-Indicator Rod 92QM. 32-12-00-010-001 Open the Main Gear Doors for Access 32-12-00-410-001 Close the Main Gear Doors after Access 28-43-23-991-002 Fig. 402
3. Job Set-up.
___________
Subtask 28-43-23-941-061
A. Safety Precautions
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
(1)
Make sure that the safety barriers are in position.
(2)
You must obey the fuel safety procedures (Ref. TASK 28-00-00-910-001) when you do work on the fuel system.
(3)
Make sure that the warning notice in position to tell persons not to operate the landing gear and the related doors.
Subtask 28-43-23-860-050
B. Aircraft Maintenance Configuration
(1)
Make sure that the main gear doors are open (Ref. TASK 32-12-00-010-001).
(2)
Make sure that the GROUND LOCK SLEEVE (460005835) in on the applicable main gear door actuator.
(3)
Make sure that the left-hand plenum chamber, 10HM5 has been removed (Ref. TASK 21-52-22-000-001).
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(4) Make sure that the MLI rod has been removed from the MLI lower housing (Ref. TASK 28-43-23-000-001).
4. Procedure.
__________
(Ref. Fig. 402/TASK 28-43-23-991-002) Subtask 28-43-23-420-062
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. 11-004).
(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 28-43-23-420-059
B. Installation of the Magnetic Level-Indicator Lower-Housing 91QM
(1)
Carefully install the MLI lower housing (7) through the belly fairing skin. Do not cause damage to the bonding strap (11).
(2)
Attach the threaded bush (1) to the center body assembly. Do not tighten the threaded bush (1) at this step.
(3)
Attach the MLI lower housing (7) to the belly fairing skin with the screws (6).
(4)
Attach the bonding strap (2) to the MLI lower housing (7) with the screw (3), the shim (5) and the washer (4) (Ref. TASK 20-28-00-912-004).
(5)
Attach the bonding strap (11) to the bracket (10), using the bolt (13), the washers (9) and (12) and the nut (8) (Ref. TASK 20-28-00-912-004).
(6)
TORQUE the threaded bush (1) to 0.45 m.daN (39.82 lbf.in).
(7)
Safety the threaded bush (1) to the center body assembly with MISCELLANEOUS (Material No. 19-010).
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5. Close-up.
_________ Subtask 28-43-23-410-054
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the MLI rod (Ref. TASK 28-43-23-400-001).
(3)
Install the fan plenum chamber, 10HM5 (Ref. TASK 21-52-22-400-001).
(4)
Install the access panels 191JB and 195BB and/or 196BB.
(5) Close the main landing gear doors (Ref. TASK 32-12-00-410-001). Subtask 28-43-23-942-052
B. Removal of Equipment
(1)
Remove the safety barriers.
(2)
Remove the warning notice(s).
(3)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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Removal of the Magnetic Level-Indicator Upper-Housing 98QM.
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
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