E.
Prepare for Repair of the Fan Exit Vanes
S 868-120-N00
(1)
Attach a DO-NOT-OPERATE tag to the ENG START switch which is located on the overhead panel P5.
(2)
Open the fan cowl panels (AMM 71-11-04/201).
S 018-121-N00
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-33-02
ALL ú ú N01 Page 826 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 048-122-N00
WARNING: DO THE DEACTIVATION PROCEDURE TO PREVENT THE OPERATION OF THE
_______
THRUST REVERSERS. ACCIDENTAL OPERATION OF THE THRUST REVERSER
CAN CAUSE INJURY TO YOU AND DAMAGE TO EQUIPMENT.
(3)
Do the Deactivation Procedure for the thrust reverser for ground
maintenance (AMM 78-31-00/201).
S 018-123-N00
(4)
Open the core cowl panels (AMM 71-11-06/201).
S 018-124-N00
WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______
REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO YOU
AND DAMAGE TO EQUIPMENT CAN OCCUR.
(5)
Open the thrust reversers (AMM 78-31-00/201).
F.
Procedure
S 358-125-N00
(1) If the damaged vane cannot be repaired (AMM 72-33-02/601), remove
the inner diameter and outer diameter platforms and the fairings of
the damaged vane(s).
WARNING: DO NOT LET THE VANE MATERIAL GET INTO YOUR EYES OR MOUTH
_______ OR ON YOUR SKIN. MAKE SURE YOU USE EQUIPMENT FOR PROTECTION. THE VANE MATERIAL IS POISONOUS AND CAN CAUSE INJURY TO PERSONS.
(a)
Use a saw to remove the airfoil.
(b)
If necessary, cut the wire that locks the bolts on the outer diameter of the fan case (Fig. 803). 1) Remove the bolts or nuts and washers that hold the outer
diameter of the vane.
(c)
Remove the inner diameter and outer diameter platforms and fairings.
S 028-126-N00
(2)
Remove the bolts or washers and nuts from the adjacent vanes.
(a)
If necessary, cut the wire that locks the outer diameter bolts to the 15 to 20 adjacent vanes in the counterclockwise direction from the damaged vane. 1) Remove the bolts or washers and nuts that hold the outer
diameter platforms of the vanes.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-33-02
ALL ú ú N01 Page 827 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A BSEE LOOSEN AND MOVE 15 TO 20 VANES THAT ARE COUNTER-CLOCKWISE FROM THE REMOVED DAMAGED VANE
GUIDE VANE FAN EXIT
SEE C D
COUNTERCLOCKWISE
(REMOVAL) REMAINING PIECES OF DAMAGED VANE
CLOCKWISE (INSTALLATION) A
REMAINING PIECE OF DAMAGED VANE IS REMOVED
DAMAGED VANE REMOVAL
C
CLOCKWISE
L-A9631 (0000)
B
MOVE THE OUTER DIAMETER PLATFORMOF THE REPLACEMENT VANE CLOCKWISE
REPLACEMENT VANE INSTALLATION
D
L-A9630 (0000) Fan Exit Case and Vane Repair (Damaged Vane Replacement) Figure 807
E73687
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-33-02
ALL ú ú N01 Page 828 ú Feb 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(b) Use the space (where the damaged vane was) to move the outer diameter of the adjacent vane clockwise (seen from the rear) to loosen the outer diameter foam fairings.
NOTE: Loosened outer diameter fairings will permit easier
____
removal.
S 028-127-N00
(3)
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 发动机 ENGINE 2(31)
