_________
(Ref. Fig. 601/TASK 73-11-30-991-300, 602/TASK 73-11-30-991-301) Subtask 73-11-30-230-051
A. Do a fluorescent penetrant inspection to make sure of actual or suspected cracks in fuel manifolds or tubes (Ref. TASK 70-51-00-230-002).
Subtask 73-11-30-210-051
B. Do a visual inspection of the items that follow:
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
R R 1. Fuel manifold tubes for: - Cracks, splits or kinks. - Wrinkles in bends.
R - Dents.
R - Flat areas.
Not serviceable. Replace the engine.
The depth must not be Replace the engine.
more than 3 percent of
the nominal tube
diameter or 1.52 mm
(0.06 in.) deep
whichever is smaller.
No more than 2 in each Replace the engine.
linear foot, provided
the depth is not more
than 10 percent of the
tube OD and the radius
is not less than 2 times
the thickness of the
tube wall.
Length must not be more Replace the engine.
than 2 times the tube
OD, or the contour
change must not be more
than 10 percent of the
tube OD.
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Fuel Nozzle Coupling Nut
Figure 601/TASK 73-11-30-991-300
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Spherical Seat Fitting Inspection Areas
Figure 602/TASK 73-11-30-991-301
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INSPECT/CHECK MAXIMUM SERVICEABLE LIMITS REMARKS
-------------------------------------------------------------------------------
- Nicks, scratches, chafing or scores in the straight or bent sections. 0.005 in. (0.12 mm) maximum depth. Replace the engine.
2. Tube coupling nuts for:
- Damaged corners. Any amount provided you can get the correct torque. Replace the engine.
- Damaged thread. One half thread total or continuous not there. Replace the engine.
- Lockwire hole deformation and wear. Permitted provided the metal around the hole isnot cracked. Replace the engine.
- Lockwire hole torn open. Permitted provided one hole for each coupling nut stays intact. Replace the engine.
3. Fitting seating surfaces for:
R R R NOTE : Do this portion of the fuel manifold inspection if you think you have____ a leak, if you find damage after you remove a fuel nozzle, or if you see visual damage.
R R R NOTE : If not already done, disconnect the fuel supply tube from applicable____ fuel nozzle (Ref. TASK 73-11-40-000-001) and (Ref. TASK 73-11-40-400-001).
- Circumferential and axial scratches in areas A and C. Any amount 0.13 mm (0.005 in.) or less indepth after the removal of high metal. Replace the engine.
- Circumferential scratches in area B Any amount that cannot be felt using a 1 mm (0.04 in.) radius ball scribe. Replace the engine.
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-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
- Axial scratches in Not serviceable. Replace the engine.
area B.
- Nicks and pits in Any amount less than Replace the engine.
area C. 0.81 mm (0.032 in.)
after blending.
- Nicks and pits in Not serviceable. Replace the engine.
areas A and B.
- Circumferential Any amount, provided Replace the engine.
score marks on the that the score mark does
silver plated not go through the
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