(a) Put a warning notice to tell persons not to start the engine.
(2)
Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3)
On the overhead maintenance panel 50VU:
(a)
Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b)
Put a warning notice to tell persons not to energize the FADEC 1(2)
Subtask 54-51-17-040-051
B. Aircraft Maintenance Configuration
(1)
Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 54-51-17-020-061
C. Removal of the Forward Attach-Fittings
(1)
Remove the forward attach-fittings (Ref. TASK 54-51-17-000-001). Subtask 54-51-17-941-053
D. Get Access
(1) Put the access platform in position:
(a)
in the zone 410 for the left pylon,
(b)
in the zone 420 for the right pylon.
4. Procedure
_________
Subtask 54-51-17-220-068
A. Inspection of the Shackles
(1) Do an inspection of the shackles for corrosion and make sure that the corrosion damage is in the permitted limits. (Ref. Fig. 601/TASK 54-51-17-991-008)
(a)
If the damaged area is:
- on one side only and is less than 400 mm2 (0.62 in.2): the maximum depth of the defect must be 1.5 mm (0.0590 in.).
(b)
If the damaged areas are:
- on the two sides and are less than 400 mm2 (0.62 in.2): the sum of the maximum depth of the defects on the two sides must be
1.5 mm (0.0590 in.).
(c)
If the damaged area is:
- on one side only and is more than 400 mm2 (0.62 in.2): the maximum depth of the defect must be 1 mm (0.0393 in.).
(d)
If the damaged areas are:
- on the two sides and are more than 400 mm2 (0.62 in.2): the sum of the maximum depth of the defects on the two sides must be 1 mm (0.0393 in.).
(e)
If the damaged area:
-is around the bore on one side only and:
-maximum dimension of the defect measured radially is less than 25 mm (0.9842 in.).
-The maximum depth of the defect must be 0.6 mm (0.0236 in.).
(f)
If the damaged areas:
-are around the bore on the two sides and:
-Maximum dimension of the defect measured radially is less than 25 mm (0.9842 in.): the sum of the maximum depth of the defects on the two sides must be 0.6 mm (0.0236 in.).
Subtask 54-51-17-220-050
B. Inspection of the Pylon-to-Wing Forward Attach-Fitting
(1) Do a detailed inspection of the pylon-to-wing forward attach-fitting and make sure that the dimensions are correct. (Ref. Fig. 602/TASK 54-51-17-991-009)
Permitted Corrosion on the Shackles
Figure 601/TASK 54-51-17-991-008
1EFF : ALL 1 54-51-17 Page 608
1 1 Feb 01/98
1 1
1CES 1
Forward Attach Fitting
Figure 602/TASK 54-51-17-991-009
1EFF : ALL 1 54-51-17 Page 609
1 1 Feb 01/98
1 1
1CES 1
-------------------------------------------------------------------------------
| FIG. | ORIGINAL MANUFACTURING LIMITS | IN-SERVICE WEAR LIMITS | | DETAIL |---------------------------------------|----------------------------| | AND | DIMENSION | ASSEMBLY CLEARANCE| DIMENSION LIMITS | MAX. | | ITEM | IN. (MM) | IN. (MM) | IN. (MM) | ALLOW. | | NO. |-------------------|-------------------|---------|---------| CLEAR. | | | MIN. | MAX. | MIN. | MAX. | MIN. | MAX. |IN. (MM)| |--------|---------|---------|---------|---------|---------|---------|--------| | A | 1.5738 | 1.5742 | | | 1.5731 | | | | OD 1 |(39.974) |(39.984) | | |(39.956) | | | | | | | 0.0006 | 0.0019 | | | 0.0040| | | | | (0.015) | (0.048) | | |(0.101) | | A | 1.5748 | 1.5757 | | | | 1.5771 | | | ID 2 |(39.999) |(40.022) | | | |(40.058) | | -------------------------------------------------------------------------------
Subtask 54-51-17-220-051
C. Inspection of the Pylon-to-Wing Forward Attach-Fitting
(1) Do a detailed inspection of the pylon-to-wing forward attach-fitting and make sure that the dimensions are correct. (Ref. Fig. 602/TASK 54-51-17-991-009)
-------------------------------------------------------------------------------| FIG. | ORIGINAL MANUFACTURING LIMITS | IN-SERVICE WEAR LIMITS | | DETAIL |---------------------------------------|----------------------------| | AND | DIMENSION | ASSEMBLY CLEARANCE| DIMENSION LIMITS | MAX. | | ITEM | IN. (MM) | IN. (MM) | IN. (MM) | ALLOW. | | NO. |-------------------|-------------------|---------|---------| CLEAR. | | | MIN. | MAX. | MIN. | MAX. | MIN. | MAX. |IN. (MM)| |--------|---------|---------|---------|---------|---------|---------|--------| | A | 1.5738 | 1.5742 | | | 1.5731 | | | | OD 1 |(39.974) |(39.984) | | |(39.956) | | | | | | | 0.0006 | 0.0019 | | | 0.0040| | | | | (0.015) | (0.048) | | |(0.101) | | A | 1.5748 | 1.5757 | | | | 1.5771 | | | ID 4 |(39.999) |(40.022) | | | |(40.058) | | -------------------------------------------------------------------------------
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