(0.35 oz) sodium hydroxide 0.01 l (0.0026 USgal) distilled water.
(4)
With a pipette, apply 3 or 4 drops of the test solution to the minor damage.
(5)
Let the solution take effect for 1 to 3 minutes. If the minor damage has gone through the aluminum cladding, the exposed alloy will go black/ brown, the cladding will not change color.
(6)
Flush the test area with clean water before the solution dries.
(7)
Neutralize the area with a 5 % chromic oxide solution.
(8)
Flush the test area with clean water.
(9)
Dry the area with a hot air dryer.
5. Close-up
________ Subtask 51-73-00-942-050
A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
REPAIR OF MINOR DAMAGE - REPAIRS
________________________________
TASK 51-73-11-300-001
Repair of Minor Damage on Aluminum Clad Components
WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL MATERIALS
_______ ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific abrasive cloth grade 280 No specific abrasive paper grade 400 No specific lint-free cloth No specific rounded scotch stone No specific steel roller
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 04-012 USA VV-P-236 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00) Material No. 05-025 USA MIL-P-6888 POLISH METAL ALUMINUM (Ref. 20-31-00)
Material No. 11-004 USA MIL-T-81533 1.1.1TRICHLOROETHANE (METHYL CHLOROFORM) (Ref. 20-31-00)
Material No. 13-002 USA MIL-C-5541 MIL-C-81706 CLASS I/A CHEMICAL CONVERSION COATING YELLOW ALUMINUM (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
51-73-00-200-001 Inspection of Minor Damage to Aluminum Cladding 51-75-12-300-001 Repair of Major Paint Damage on Light Alloy and Composite Material
3. Job Set-up
__________
Subtask 51-73-11-941-051
A. Get access to the area of the damage.
4. Procedure
_________
Subtask 51-73-11-320-050
A. Repair of Minor Damage
R (1) Do an inspection of the depth of the minor damage (Ref. TASK 51-73-
00-200-001).
R (2) Refer to the ASRM 51-73-00 and the applicable ASRM-chapter 52 thru 57
R for the permitted depth limits.
R (3) Repair the minor damage that has not gone through the aluminum
cladding as follows:
WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THE_______
SPECIAL MATERIAL.
THIS MATERIAL IS DANGEROUS.
R (4) Clean the repair area with the CLEANING AGENTS (Material No. 11-004)
and a lint-free cloth.
R (5) Apply COMMON GREASE (Material No. 04-012) to the scratch.
R (6) Force the aluminum cladding into the scratch with a steel roller.
NOTE : Use the roller along the length of the scratch until the____
aluminum cladding has sealed the surface.
R (7) Repair the minor damage that has gone through the aluminum cladding
as follows:
R (8) Measure the depth of the scratch.
R (9) Refer to the ASRM 51-73-00 and the applicable ASRM-chapter 52 thru 57
R for the permitted depth limits.
R
R (10) Remove the paint from the area of the scratch with abrasive cloth
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