(Continued)
Condition Maximum Serviceable Limits
Dents that do not have distortion on the
opposite side of the blade
Permitted.
Dents that have distortion on the opposite
side of the blade
Permitted, if the dent has distortion not more than 0.050 inch (1.27 mm) on
the opposite side of the blade.
SUBTASK 72-52-01-216-005-G00
(6) Examine the concave and convex surfaces of the blade for:
Condition Maximum Serviceable Limits
Nicks and dents that do not have
distortion on the opposite side of the blade
Permitted,if less than 0.030 inch (0.76 mm) in depth, with a minimunm
separation of 0.250 inch (6.35 mm).
Nicks and dents that have distortion on
the opposite side
Five on each blade are permitted, if the distortion is less than 0.020 inch
(0.52 mm) on the opposite side. There must be a minimum separation of
0.250 inch (6.35 mm).
SUBTASK 72-52-01-216-006-G00
(7) Examine the clearance control manifold for:
Condition Maximum Serviceable Limits
Cracks in the supply tube Permitted, if less than 2.0 inch (50.8 mm) in the area near the mount brackets.
SUBTASK 72-52-01-216-007-G00
(8) Examine the circumferential and axial feeder tubes for:
Cracks Permitted, if the cracks are separated by one (or more) support member.
On bird cage tube cracks, you can crimp together the two ends of the crack.
There must be no more than 12.0 inches (305.0 mm) of tube that is closed off
from the air source.
Bends Permitted, if the bends ore less than 0.250 inch (6.4 mm) from the initial contour
of the tube.
If it is possible, you can apply pressure to the tube with your hands to make the
tube in its initial shape.
Dents Permitted, if less than 0.25 inch (6.34 mm) in depth. There must be no more
than 12.0 inch (305.0 mm) of tube that is blocked.
Cracks in the brackets Permitted, two brackets on each manifold can be broken.
Cracks in the tube straps Permitted.
E. Put the Airplane Back to its Usual Condition
SUBTASK 72-52-01-016-012-G00
WARNING
OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO
PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(1) Close the thrust reversers (PAGEBLOCK 78-31-00/201).
SUBTASK 72-52-01-416-013-G00
(2) Close the core cowl panels (PAGEBLOCK 71-11-06/201).
767
AIRCRAFT MAINTENANCE MANUAL
CF6-80A SERIES ENGINES
72-52-01
Config 1
Page 603
D633T1B7 Aug 22/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ABX 001-007, 011, 012, 016-019, 021, 022, 025, 101,
109, 114, 115, 314-999
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