(3)
If the paint is golden brown or blistered, do the hardness check in Para. 4.B.
R **ON A/C 001-003, 051-052,
Subtask 32-11-00-220-066
B. Hardness Check
(1)
Prepare the top of the brake flange between two adjacent bolt holes to do the hardness check that follows:
(a)
Use abrasive paper (320 to 500 grit) to remove material in an area that is not more than 10 mm (0.3937 in.) x 10 mm (0.3937 in.). The thickness must be between 0.25 mm (0.0098 in.) and 0.5 mm (0.0196 in.).
(b)
Do not remove more metal than necessary, but make sure the prepared area is cleaned to the shot peened surface.
(2)
Use the hardness tester (MICRODUR unit or equivalent) to do a hardness check. (The minimum hardness must be 571 HV):
-
if the hardness is 571 HV or more, it is satisfactory. Repair the area prepared for the hardness check and any paint that is discolored (Ref. CMM 321133)
-
if the hardness is less than 571 HV, it is unsatisfactory and you must replace the MLG sliding tube (Ref. TASK 32-11-13-000-004) and (Ref. TASK 32-11-13-400-004).
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Main Landing Gear Axle (Twin) Figure 608/TASK 32-11-00-991-023
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R **ON A/C 004-049, 053-099, 101-149, 151-199, 201-299, 401-499,
Subtask 32-11-00-220-066-A
B. Hardness Check
(1)
Prepare the top of the brake flange between two adjacent bolt holes to do the hardness check that follows:
(a)
Use abrasive paper (320 to 500 grit) to remove material in an area that is not more than 10 mm (0.3937 in.) x 10 mm (0.3937 in.). The thickness must be between 0.25 mm (0.0098 in.) and 0.5 mm (0.0196 in.).
(b)
Do not remove more metal than necessary, but make sure the prepared area is cleaned to the shot peened surface.
(2)
Use the hardness tester (MICRODUR unit or equivalent) to do a hardness check. (The minimum hardness must be 571 HV):
-
if the hardness is 571 HV or more, it is satisfactory. Repair the area prepared for the hardness check and any paint that is discolored (Ref. CMM 321225)
-
if the hardness is less than 571 HV, it is unsatisfactory and you must replace the MLG sliding tube (Ref. TASK 32-11-13-000-004) and (Ref. TASK 32-11-13-400-004).
**ON A/C 301-399,
Subtask 32-11-00-220-066-B
B. Hardness Check
(1) Prepare the top of the brake flange between two adjacent bolt holes to do the hardness check that follows:
(a)
Use abrasive paper (320 to 500 grit) to remove material in an area that is not more than 10 mm (0.3937 in.) x 10 mm (0.3937 in.). The thickness must be between 0.25 mm (0.0098 in.) and 0.5 mm (0.0196 in.).
(b)
Do not remove more metal than necessary, but make sure the prepared area is cleaned to the shot peened surface.
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(2) Use the hardness tester (MICRODUR unit or equivalent) to do a hardness check. (The minimum hardness must be 571 HV):
-
if the hardness is 571 HV or more, it is satisfactory. Repair the area prepared for the hardness check and any paint that is discolored (Ref. CMM 321222)
-
if the hardness is less than 571 HV, it is unsatisfactory and you must replace the MLG sliding tube (Ref. TASK 32-11-13-000-004) and (Ref. TASK 32-11-13-400-004).
**ON A/C ALL
5. Close-up
________
Subtask 32-11-00-410-065
A. Close Access
(1)
Install the MLG axle sleeves and the brakes (Ref. TASK 32-42-27-400-001).
(2)
Install the MLG wheels (Ref. TASK 32-41-11-400-006).
Subtask 32-11-00-942-078
B. Removal of Equipment
(1)
Remove the warning notice(s).
(2)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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TASK 32-11-00-200-008
Detailed Inspection of MLG, Sliding Tube (Twin Wheel)
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.
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本文链接地址：A320飞机维护手册 AMM LANDING GEAR 起落架1(110)
