(a)
Move the 15th to 20th vane (that is counterclockwise from the removed vane, as viewed from the rear) counterlockwise, at an angle, to collect space.
NOTE: This will make an overlap of the outer diameter
____
platforms of vanes.
1) Hold the vane and push it radially to the inner diameter. 2) Move the outer diameter base of the vane counterclockwise to make an overlap on the adjacent vane base.
(b) Continue clockwise to make overlaps with the remaining vanes to collect space.
NOTE: The remaining two or three vanes adjacent to the removed
____ vane will be almost off their pins. The best procedure, to move a vane off of its pins, is to move the outer diameter of the vane axially forward and aft slowly.
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(4)
Install the replacement vane.
(a)
If necessary, put a new foam fairing on the inner dimeter of
the inner case.
(b)
If necessary, put a new foam fairing on the new vane.
(c)
Put the new vane on the pins of the inner case.
1) Engage the forward pin first.
2) When the pins and the holes are aligned, move the outer
diameter platform of the vane at an angle clockwise (seen from the rear) so that the vane will be against its inner diameter pins.
NOTE: Make sure the vane platform does not hit the fan
____
exit case edges.
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(5) Put the remaining vanes back to the correct position.
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(6) Connect the new vane to the outer case.
CAUTION: DO NOT USE THE WASHERS AT THE BOLT HOLES IN THE FAN EXIT
_______ (OUTER) CASE WITH BUSHINGS IN THEM. YOU WILL CAUSE DAMAGE TO THE CASE AND VANE ASSEMBLY IF YOU USE THE WASHERS.
(a) ENGINES PRE-PW-SB 72-262; Do the steps that follow: 1) Apply engine oil to the threads of the bolts. 2) Attach the vane to the outer case with washers and bolts. 3) Tighten the bolts to 74-82 pound-inches (8.361-9.265 newton
meters).
a) Install lockwire.
CAUTION: DO NOT USE THE WASHERS AT THE BOLT HOLES IN THE FAN EXIT
_______ (OUTER) CASE WITH BUSHINGS IN THEM. YOU WILL CAUSE DAMAGE TO THE CASE AND VANE ASSEMBLY IF YOU USE THE WASHERS.
(b) ENGINES POST-PW-SB 72-262; Do the steps that follow: 1) Apply engine oil to the threads of the slab bolts. 2) Install the slab bolts through the vane, outer fairing, and
outer case. 3) Install the washers and nuts on the bolts. 4) Tighten the nuts to 85-95 pound-inches (9.604-10.734 newton
meters)
(c) ENGINES POST-PW-SB 72-262; Apply sealant to the holes where the heads of the slab bolts are, as follows: 1) Clean the surfaces the sealant will touch, with clean cloth
that is moist with alcohol.
a) Fully dry the repair area in air that is at ambient temperature until there is no remaining alcohol on the part.
2) Fill the hole with sealant. 3) Make the contour of the sealant agree with the contour of the adjacent surfaces.
4) Cure the sealant as follows: a) in air at ambient temperature, b) in air that has a relative humidity of not less than
25%.
(d) Apply sealant around the inner diameter bases of the vanes.
1) Clean the surfaces the sealant will touch, with clean cloth that is moist with alcohol. a) Fully dry the repair area in air that is at ambient
temperature until there is no remaining alcohol on the part. 2) Fill the hole with sealant.
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3) Make the contour of the sealant agree with the contour of the adjacent surfaces.
4) Cure the sealant as follows: a) In air at ambient temperature, b) In air that has a relative humidity of not less than
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