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 A. Obey the fuel safety procedures (Ref. TASK 28-00-00-910-001) and (Ref. TASK 28-10-00-910-002).
 Subtask 51-76-12-650-052
 B. Defuel the aircraft (Ref. TASK 12-11-28-650-001).
 Subtask 51-76-12-010-051
 C. Get access to the fuel leak area.
 4. Procedure_________
 Subtask 51-76-12-160-051
 A. Prepare the Repair Area 
R R  CAUTION : DO NOT USE A METAL SCRAPER TO REMOVE THE UNWANTED MATERIAL. A_______ METAL SCRAPER CAN CAUSE DAMAGE TO THE SURFACE OF THE COMPONENT.
R  (1) Remove the sealant from the leak point and up to a distance of 75 mm (2.9527 in.) from the leak point area with a SCRAPER - NON METALLIC.
 NOTE : The maximum width of the fillet must not be more than 6.5 mm____ (0.2559 in.).
 (2) Chamfer the edges of the sealant that is not damaged. 
R  (3) Clean the repair area. 
R R R  WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THE_______ SPECIAL MATERIAL. THIS MATERIAL IS DANGEROUS. 
R R R R R R R R R  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.

 

R R R (a) Clean the repair area with the CLEANING AGENTS (Material No. 11-004) and a MISCELLANEOUS (Material No. 19-003). 
Subtask 51-76-12-914-051
 B. Do the Repair 
R R  (1) Mix the necessary quantity of SEALANTS (Material No. 09-002A) or SEALANTS (Material No. 09-016).
 (2) Apply a continuous fillet of sealant along the repair area. The maximum width of the fillet must not be more than 6.5 mm (0.2559 in.).
 NOTE : The repair must overlap the sealant adjacent to the repair____ area by a minimum of 12.5 mm (0.4921 in.).
 (3) Move the sealant into the correct position with a flat nonmetallic tool.
 (4) Let the sealant cure for half of the tack-free time. Refer to the manufacturers instructions for the cure time.
 (5) Apply a top coat of SEALANTS (Material No. 09-001) to the repair area.
 (6) Let the sealant repair cure.
 (7) Make sure that the work area is clean and clear of tool(s) and other items.
 Subtask 51-76-12-650-053
 C. Refuel the aircraft. (Ref. TASK 12-11-28-650-001)
 Subtask 51-76-12-790-051
 D. Examine the repair for leaks.
 NOTE : Leaks are not permitted.____
 (1) If there are leaks, refer to SRM 51-76-12, P. Block 1, for corrective action.

 5. Close-up
________

 Subtask 51-76-12-942-051
 A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
 1EFF : ALL 1 51-76-12Page 808 1 1 Aug 01/04R 1 1 1CES 1

 TASK 51-76-12-300-003

 Temporary External Repair of the Fuel Tank
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific flat nonmetallic tool No specific lint free cloth
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 09-009 X (Ref. 20-31-00)
 Material No. 11-004  USA MIL-T-81533 1.1.1TRICHLOROETHANE (METHYL CHLOROFORM) (Ref. 20-31-00)
 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-11-28-650-004 Pressure Refuel with Manual Control 28-00-00-910-001 Fuel Safety Procedures 28-10-00-910-002 Access to the Fuel Tanks and the Work Areas 28-11-00-280-002 Fuel Tank Leak Checks 28-25-00-650-001 Pressure Defuel
 1EFF : ALL 1 51-76-12Page 809 1 1 Aug 01/04R 1 1 1CES 1

 __________ Subtask 51-76-12-941-052
 A. Obey the fuel safety procedures (Ref. TASK 28-00-00-910-001) and
 (Ref. TASK 28-10-00-910-002).

 Subtask 51-76-12-010-052
 B. Get access to the fuel leak area. Subtask 51-76-12-280-050
 C. Calculate the leak rate (Ref. TASK 28-11-00-280-002) and make sure that a temporary repair is permitted.
　
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