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 B. Aircraft Maintenance Configuration
 (1) Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041) Subtask 54-51-17-020-062
 C. Removal of the Pylon-to-Wing Aft Attach-Fitting
 (1) Remove the pylon-to-wing aft attach-fittings (Ref. TASK 54-51-17-000-002).
 Subtask 54-51-17-941-055
 D. Get Access
 (1) Put the access platform in position:
 (a)
 in zone 470 for the left pylon,

 (b)
 in zone 480 for the right pylon.

 

 4. Procedure
_________

 Subtask 54-51-17-220-063
 A. Inspection of the Pylon-to-Wing Aft Attach Fitting
 (1) Do a detailed inspection of the pylon-to-wing aft attach-fitting and make sure that the dimensions are correct: (Ref. Fig. 604/TASK 54-51-17-991-011)
 -------------------------------------------------------------------------------| 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)| |--------|---------|---------|---------|---------|---------|---------|--------| | B | 2.1280 | 2.1288 | | | 2.1278 | | | | OD 15 |(54.051) |(54.071) | | |(54.046) | | | | | | | -0.0028 | -0.0008 | | | 0.0000| | | | |-(0.071) |-(0.020) | | |(0.000) | | B | 2.1260 | 2.1272 | | | | 2.1278 | | | ID 14 |(54.000) |(54.030) | | | |(54.046) | | -------------------------------------------------------------------------------
Subtask 54-51-17-220-064
 B. Inspection of the Pylon-to-Wing Aft Attach-Fitting
 (1) Do a detailed inspection of the pylon-to-wing aft attach-fitting and make sure that the dimensions are correct. (Ref. Fig. 604/TASK 54-51-17-991-011)

 Aft Attach Fitting
 Figure 604/TASK 54-51-17-991-011
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 -------------------------------------------------------------------------------
| 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)| |--------|---------|---------|---------|---------|---------|---------|--------| | B | 1.8888 | 1.8894 | | | 1.8881 | | | | OD 16 |(47.975) |(47.990) | | |(47.957) | | | | | | | 0.0004 | 0.0019 | | | 0.0040| | | | | (0.010) | (0.048) | | |(0.101) | | B | 1.8898 | 1.8907 | | | | 1.8921 | | | ID 15 |(48.000) |(48.023) | | | |(48.059) | | -------------------------------------------------------------------------------
Subtask 54-51-17-220-065
 C. Inspection of the Pylon-to-Wing Aft Attach-Fitting
 (1) Do a detailed inspection of the aft attach fitting and make sure that the dimensions are correct. (Ref. Fig. 604/TASK 54-51-17-991-011)
 -------------------------------------------------------------------------------| 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)| |--------|---------|---------|---------|---------|---------|---------|--------| | B | 1.8127 | 1.8133 | | | 1.8125 | | | | OD 17 |(46.042) |(46.057) | | |(46.037) | | | | | | | -0.0023 | -0.0007 | | | 0.0000| | | | |-(0.058) |-(0.017) | | |(0.000) | | B | 1.8110 | 1.8120 | | | | 1.8125 | | | ID 14 |(45.999) |(46.024) | | | |(46.037) | | -------------------------------------------------------------------------------
Subtask 54-51-17-220-066
 D. Inspection of the Pylon-to-Wing Aft Attach-Fitting
 (1) Do a detailed inspection of the forward attach-fitting and make sure that the dimensions are correct. (Ref. Fig. 604/TASK 54-51-17-991-011) -------------------------------------------------------------------------------| 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)| |--------|---------|---------|---------|---------|---------|---------|--------| | B | 1.5738 | 1.5744 | | | 1.5731 | | | | OD 18 |(39.974) |(39.989) | | |(39.956) | | | | | | | 0.0004 | 0.0020 | | | 0.0040| | | | | (0.010) | (0.050) | | |(0.101) | | B | 1.5748 | 1.5758 | | | | 1.5771 | | | ID 17 |(39.999) |(40.025) | | | |(40.058) | | -------------------------------------------------------------------------------
　
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