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 S 214-040
 (12) Do a visual inspection of the seal that is located between the ACM and the fan diffuser housing.
 (a)  If the seal is damaged, then replace it per the instructions in the vendor component maintenance manual (CMM 21-51-04).
 NOTE: The seal can appear to be flat when the ACM is removed
____ from the fan diffuser housing. The seal will typically return to its usual shape in a short time.
 (b)  If the seal is not properly bonded to the fan diffuser housing, then repair it per the instructions in the vendor component maintenance manual (CMM 21-51-04).
 TASK 21-51-04-404-015
 3. Air Cycle Machine Installation (Fig. 401)
______________________________
 A. References
 (1)  
AMM 20-11-14/701, Metal Surfaces - Cleaning/Painting

 (2)  
AMM 20-22-01/601, Electrical Bonding

 (3)  
AMM 21-00-00/201, Air Conditioning

 (4)  
AMM 36-11-01/401, Pneumatic Manifold

 B. Special Tools and Equipment
 (1)  
ACM Lifting Tool ME65B40000-1

 (2)  
ACM Lifting Tool ME65B0005

 (3)  
Bonding Meter

 C. Consumable Materials
 (1)  
B00192 Solvent, BMS 3-2, type 1

 (2)  
G00378 Alodine

 (3)  
G00033 Lint-free cheesecloth

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A
747-400 MAINTENANCE MANUAL
 D. Parts
 (1) This table is for Pack 1.
 ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Retainer | 21-51-00 | 05 | 205 | | | 2 | Sleeve | | | 220 | | | 3 | Seal | | | 235,245 | | | 4 | Coupling | | | 300 | | | 5 | Packing (O-ring) | | | 285 | | | 6 | Joint Assembly-Flex (Coupling) | 21-51-08 | 01 | 312 | | | 7 | ACM | 21-51-04 | 02 | 285 | | | 8 | Clamp | | | 335 | | | 10 | Coupling | 21-51-00 | 05 | 325 | | | 11 | Packing (O-ring) | | | 290 | | | 12 | Coupling | | | 350 | | | 13 | Packing (O-ring) | | | 295 | | | 14 | Bracket | 21-51-04 | 02 | 100 | | | 15 | Jumper Assembly | | | 475 | 2......…........…...................................…..........….....….........1
 (2) This table is for Pack 2.
 ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Retainer | 21-51-00 | 06 | 255 | | | 2 | Sleeve | | | 270 | | | 3 | Seal | | | 285,295 | | | 4 | Coupling | | | 350 | | | 5 | Packing (O-ring) | | | 335 | | | 6 | Joint Assembly-Flex (Coupling) | 21-21-53 | 01 | 215 | | | 7 | ACM | 21-51-04 | 02 | 285 | | | 8 | Clamp | | | 335 | | | 10 | Coupling | 21-51-00 | 06 | 375 | | | 11 | Packing (O-ring) | | | 340 | | | 12 | Coupling | | | 400 | | | 13 | Packing (O-ring) | | | 345 | | | 14 | Bracket | 21-51-04 | 02 | 100 | | | 15 | Jumper Assembly | | | 475 | 2......…........…...................................…..........….....….........1
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 21-51-04
 ALL  ú ú 01 Page 406 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (3)  This table is for Pack 3.
 ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Retainer | 21-51-00 | 07 | 205 | | | 2 | Sleeve | | | 220 | | | 3 | Seal | | | 235,245 | | | 4 | Coupling | | | 305 | | | 5 | Packing (O-ring) | | | 290 | | | 6 | Joint Assembly-Flex (Coupling) | 21-51-08 | 03 | 43 | | | 7 | ACM | 21-51-04 | 02 | 285 | | | 8 | Clamp | | | 335 | | | 10 | Coupling | 21-51-00 | 07 | 330 | | | 11 | Packing (O-ring) | | | 295 | | | 12 | Coupling | | | 355 | | | 13 | Packing (O-ring) | | | 300 | | | 14 | Bracket | 21-51-04 | 02 | 100 | | | 15 | Jumper Assembly | | | 475 | 2......…........…...................................…..........….....….........1
　
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