72-33-02
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
~............................................................................... | TABLE 602 | | INSPECTION OF THE FAN EXIT VANES | ................................................................................. | Examine | Damage Limits | Necessary Procedure (AMM 72-33-02/801) | .................................................................................
| Vanes | 3 vanes maximum | Install a replacement vane during the|
| that are | | subsequent removal of the engine. |
| missing | | |
| | 4-5 vanes can be | Immediately remove broken pieces. |
| | missing if no more | Install replacement vanes in less |
| | than 3 are adjacent | than 50 hours. If there are more |
| | and there is not less | vanes missing than the limit, install|
| | than 5 vanes between | replacement vanes immediately. |
| | each area of vanes | |
| | that are missing | |
2.............…........................…........................................1
S 216-024-N00
(4) Visually compare the damage you find on the vane platforms with the
limits in Table 603 (Fig. 603). ~............................................................................... | TABLE 603 | | INSPECTION OF THE VANE PLATFORMS | ................................................................................. | Examine | Damage Limits | Necessary Procedure (AMM 72-33-02/801) | ................................................................................. | Cracks in | The base section on | No procedure is necessary. | | the inner | one side of a crack | | | diameter or | in Area A makes a | | | outer | continuous surface | | | diameter | with the section on | | | vane bases | the other side of the | | | | crack. | | | | | |
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72-33-02
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SEE A CASE INTERMEDIATE
(12.70 mm) AREA A 0.500 INCH AXIAL LENGTH OUTER DIAMETER FAN EXIT INNER CASE VANE FAN EXIT BSEE
EDGE TRAILING
A
RADIAL LENGTH
AREA B AREA D
AREA C
LEADING
EDGE
AREA A
INNER DIAMETER
0.500 INCH B
(12.70 mm)
L-A0965(0593)
Fan Exit and Vane Inspection
Figure 602
D20329
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72-33-02
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE B
OUTER BASE
SEE A
AA
DIMENSION 0.75 INCH (19.050 mm) INITIAL (EXAMPLE) CRACK A
B B
MOLD BASE INNER
VANE AREA A
VANE AND BASE ASSEMBLY
ON THE OTHER SIDE OF THE BASE STRUCTURAL SECTION B
A-A 1
DIMENSION INITIAL 1.380 INCH (35.052 mm) B-B 1
B-B 2
A-A 2
1 ENGINES WITHOUT PW SB 72-262
2 ENGINES WITH PW SB 72-262 L-A7587
Fan Exit Vane Base Inspection Figure 603
D20340
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