Subtask 57-37-12-942-050
B. Remove the Equipment
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Remove the access platform(s).
(3)
Remove the safety barriers.
(4)
Remove the TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER from the flap/slat control lever.
(5)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
GLAZING - WING TIP NAVIGATION LIGHT - REPAIRS
_____________________________________________
TASK 57-37-12-300-001
Wing-Tip Glazing Assembly Lens - Polishing Procedure
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______ START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE.
WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING
_______ NOTICES ARE IN POSITION.
1. Reason for the Job
__________________
To polish and remove small surface scratches or erosion damage on the
Wing-tip Navigation Light Glazing Assembly Lens.
NOTE : This procedure is for Nordam Acrylic Lenses only (Post Modification
____
28219, 30791, 30889).
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform No specific liquid detergent No specific safety barriers No specific warning notices No specific Micro-mesh polishing kit No specific 320 grade wet or dry abrasive paper No specific 400 grade wet or dry abrasive paper 98D27803500001 1 TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 19-003 USA AMS 3819 LINT-FREE COTTON CLOTH (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
57-37-12-000-001 Removal of the Navigation Light Glazing Panel 57-37-12-400-001 Installation of the Navigation Light Glazing Panel
3. Job Set-up
__________ Subtask 57-37-12-941-052
A. Safety Precautions
(1)
Put the safety barriers in position.
(2)
Install the TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER (98D27803500001) on the flap/slat control lever.
(3)
Put the warning notices in the cockpit to tell persons not to operate the flaps or slats.
Subtask 57-37-12-010-050
B. Get Access
(1)
Put the access platform below the applicable wing-tip, zone 534(634).
(2)
If necessary, remove the applicable Navigation Light Glazing Panel (Ref. TASK 57-37-12-000-001).
4. Procedure_________
Subtask 57-37-12-350-050
A. To Repair the Navigation Light Lens
NOTE : A Micro-mesh polishing kit is necessary for this repair procedure.
____
NOTE : To help keep the acrylic lens cool and prevent heat distortion,
____ the surface of the lens must be kept wet with sufficient water. A small amount of liquid detergent can be added to the water to help with lubrication.
NOTE : Always wind the abrasive papers around the foam block and work in
____ a straight-line movement and at alternate right angles. Each subsequent application of abrasive paper must overlap the area that was worked before. Make sure that the damage has been removed before you continue with the subsequent grade of abrasive paper. Protect all areas of the lens that do not require repair.
(1)
Measure and record the maximum depth of the damage to be repaired. The maximum depth of damage that can be repaired is 0.889 mm (0.0350 in.).
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