S 014-003
(2)
To get access to the supply fan, remove the left sidewall lining forward of STA 560 (AMM 25-52-01/401).
S 014-004
(3)
To get access to the exhaust fan, remove the right sidewall lining forward of STA 520 (AMM 25-52-01/401)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-58-01
ALL ú ú 02F Page 401 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
1. CLAMP (4 LOCATIONS)
A-A
Forward Equipment Cooling Supply Fan Installation
Figure 401
D02293
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-58-01
ALL ú ú 01F Page 402 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
8.
SCREW
9.
10.
NUT
7. BONDING JUMPER
FWD
16. WASHER 5. FAN
(ROTATED 180`) A-A
Forward Equipment Cooling Exhaust Fan Installation
Figure 402
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-58-01
ALL ú ú 01F Page 403 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
D02313
A
747-400 MAINTENANCE MANUAL
D. Remove the Fan
S 034-005
(1) Disconnect the electrical connector (6) from the fan (5):
(a)
Supply Fan DB7436
(b)
Exhaust Fan DB7437
S 034-006
(2)
Disconnect the bonding jumper (7) from the fan (5).
S 034-007
(3)
Remove the clamps (1) on each side of the fan (5).
S 034-008
(4)
Move the duct sleeves (2) away from the fan (5).
S 034-009
(5)
Remove the nut (15) and the washer (16) from the clevis (11).
S 034-010
(6)
Remove the bolt (12) and the nut (13) from the clevis (11).
S 034-011
(7)
Remove the clevis (11) and the support rods (17 and 18) from the fan (5).
S 034-012
(8)
Remove the bolts (3) and nuts (4) (supply fan only) from the shockmount.
(9)
Remove the fan (5).
(10)
Put a cover on the duct openings.
S 024-013
S 034-014
TASK 21-58-01-404-015
3. Forward Equipment Cooling Fan Installation (Fig. 401 and 402)
__________________________________________
A. Parts
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-58-01
ALL ú ú 01F Page 404 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
SUPPLY FAN ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Clamp - AFT | 21-58-01 | 01 | 30 | | | 1 | Clamp - FWD | | | 35 | | | 2 | Duct (Sleeve) - FWD | 21-58-52 | 03 | 25 | | | 2 | Duct (Sleeve) - AFT | | | 30 | | | 3 | Bolt | 21-58-01 | 01 | 45 | | | 4 | Nut | | | 60 | | | 5 | Fan | | | 65 | | | 8 | Screw | | | 15 | | | 9 | Washer | | | 20 | | | 10 | Nut | | | 25 | | | 11 | Clevis | | | 40 | | | 12 | Bolt | | | 50 | | | 13 | Nut | | | 60 | | | 15 | Nut | | | 60 | | | 16 | Washer | | | 55 | 2.......….......…...................................…...........….....…........1
EXHAUST FAN ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 402 | 1 | Clamp - Bottom | 21-58-01 | 02 | 30 | | | 1 | Clamp - Top | | | 35 | | | 2 | Duct (Sleeve) - Top | 21-43-52 | 02 | 240 | | | 2 | Duct (Sleeve) - Bottom | | | 245 | | | 3 | Bolt | 21-58-01 | 02 | 40 | | | 5 | Fan | | | 65 | | | 8 | Screw | | | 15 | | | 9 | Washer | | | 20 | | | 10 | Nut | | | 25 | | | 11 | Clevis | | | 60 | | | 12 | Bolt | | | 45 | | | 13 | Nut | | | 55 | | | 14 | Washer | | | 50 | | | 15 | Nut | | | 55 | | | 16 | Washer | | | 50 | 2.......….......…...................................…...........….....…........1
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 空调 AIR CONDITIONING 2(82)