- Bolt hole cracks that extend radially inward
5. Fuel nozzle pads for :
- Thread damage
- Nicks, scores, pits and deposits
One crack per hole, 2cracks per frame
Not serviceable
Minimum of 4 undamaged threads must be present after chasing threads
Any number on sealing surface 0.03 in. (0.76 mm) deep not extending across more than 50 percent of sealing surface after removal of high metalSee limit extensions(Ref. TASK 72-00-00-200-025)
See limit extensions(Ref. TASK 72-00-00-200-025)
See limit extensions(Ref. TASK 72-00-00-200-025)
Remove high metal anddeposits (Ref. TASK 72-41-00-300-002)
6. Igniter and borescope bosses for :
- Thread damage Minimum of 3 undamaged threads must be present after chasing threads
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7. HPT shroud cooling and CDP bleed pads for :
- Nicks, scores, pits Any number, any length Remove high metal
and scratches 0.03 in. (0.76 mm) in (Ref. TASK 72-41-00-300-depth provided 002). discrepancy does not extend over 75 percent of sealing surface
- Cracks extending from One crack per hole no See limit extensions
bolt holes longer than 0.06 in. (Ref. TASK 72-00-00-200-
(1.52 mm) 025)
5. Close-up
________
Subtask 72-41-00-410-054
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the thrust reverser cowl doors: (Ref. TASK 78-36-00-410-040). FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
Subtask 72-41-00-440-052
B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
Subtask 72-41-00-410-056
C. Close Access
(1) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2) Remove the access platform(s).
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(3) Remove the warning notice(s).
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COMBUSTION CASE ASSEMBLY - REPAIRS
__________________________________ TASK 72-41-00-300-002 Repairs of the Combustion Case Assembly
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 stone No specific fine file No specific warning notice No specific access platform 1 m (3 ft. 3 in.)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2189 * durite G422 (Ref. 70-30-00) Material No. CP2191 * durite G421 (Ref. 70-30-00)
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C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
70-51-00-230-002 Fluorescent-Penetrant Inspection-Portable-Water
Washable 71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 78-30-00-081-041 Make the Thrust Reverser Serviceable after
Maintenance 78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance 78-36-00-010-040 Opening of the Thrust Reverser Doors 78-36-00-410-040 Closing of the Thrust Reverser Doors
3. Job Set-up
__________
Subtask 72-41-00-941-053
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
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