21-51-11
ALL ú ú 02 Page 302 ú Nov 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
AIR CYCLE MACHINE SEEA SEEB
FWD
AIR CYCLE MACHINE
A
TURBINE INLET DUCT
TURBINE OUTLET DUCT DRAIN PLUG
FILLER PORT CHIP DETECTOR PLUG (MAGNETIC)
B
Air Cycle Machine Servicing Figure 301
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21-51-11
ALL ú ú 02 Page 303 ú Nov 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
AIR CYCLE MACHINE (ACM) - REMOVAL/INSTALLATION
______________________________________________
1. General_______
A. The air conditioning system has a left and a right air cycle machine, referred to as the ACM.
B. The procedure to remove the left and the right ACM is the same.
TASK 21-51-11-004-001
2. ACM Removal (Fig. 401)___________
A. References
(1)
21-51-11/301, Air Cycle Machine
(2)
21-51-31/401, Water Separator
(3)
21-51-61/401, Flexible Coupling Assembly
B. Access
(1) Location Zones
212 Left Air Conditioning Equipment Bay
214 Right Air Conditioning Equipment Bay
C. Prepare for the Removal
S 014-002
(1)
Lower the bay doors for the air conditioning equipment.
S 684-003
(2)
Drain the oil from the ACM (Ref 21-51-11/301).
D. Procedure
S 034-005
(1)
Remove the flexible couplings of the air cycle machine at the compressor inlet duct, the compressor outlet duct and the turbine inlet duct (AMM 21-51-61/401).
S 014-093
(2)
Remove the water separator (AMM 21-51-31/401).
S 034-004
(3)
Remove the clamp that connects the water separator muff and the duct from the 35°F control valve.
S 034-017
(4)
Remove the flexible coupling of the water separator muff clamp (AMM 21-51-61/401).
(5)
Remove the water separator muff.
S 034-019
(6)
Remove the overheat switch for the compressor discharge from the ACM compressor scroll.
S 034-018
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 034-020
(7) Remove the ACM from the mount assembly:
(a)
Remove the two forward mounting bolts.
(b)
Loosen the aft mounting nut and move the ACM forward (detail E, Fig. 401).
(c)
Do not remove the two index plate bolts that attach the index plate to the support bracket assembly.
S 024-021
(8) Remove the ACM.
TASK 21-51-11-404-022
3. ACM Installation (Fig. 401)
________________
A. References
(1)
21-00-00/201, Air Conditioning
(2)
21-51-11/301, Air Cycle Machine
(3)
21-51-31/401, Water Separator
(4)
21-51-61/401, Flexible Coupling Assembly
(5)
24-22-00/201, Electrical Power
(6)
36-05-00/201, Pneumatic System
B. Access
(1) Location Zone
212 Left Air Conditioning Equipment Bay
214 Right Air Conditioning Equipment Bay
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