S 085-045
(2)
Remove the test equipment from the airplane.
S 415-046
(3)
Push the modules forward on the main instrument panel and engage the fasteners.
S 415-047
(4)
Install the Control Display Units (CDUs) of the Flight Management Computer System (FMCS), on the P9 panel (AMM 34-62-11/401).
(5)
Close the P6-2 circuit breaker panel.
S 865-048
(6)
Remove the electrical power if it is not necessary
(AMM 24-22-00/201).
S 415-049
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21-58-03
ú ú 04 Page 514 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
EQUIPMENT COOLING BLOWER - REMOVAL/INSTALLATION
_______________________________________________
1. General_______
A. This procedure has two tasks. The first task is the removal of the equipment cooling blowers. The second task is the installation of the equipment cooling blowers.
B. AIRPLANES WITH A SEPARATELY INSTALLED CHECK VALVE FOR EACH BLOWER; There are two equipment cooling blowers: the main blower and the alternate blower. The blowers are adjacent to each other. A separate check valve is downstream of each blower.
C. AIRPLANES WITHOUT A SEPARATELY INSTALLED CHECK VALVE FOR EACH BLOWER; There are two equipment cooling blowers: the main blower and the alternate blower. The blowers are adjacent to each other. Each blower has an integral check valve downstream of the air flow.
D. The removal and the installation of each blower is the same.
TASK 21-58-12-004-003
2. Equipment Cooling Blower Removal (Fig. 401)________________________________
A. References
(1) 24-22-00/201, Manual Control
B. Access
(1) Location Zone
205 Electronic Compartment
C. Procedure
S 864-017
(1)
Remove electrical power (AMM 24-22-00/201).
S 014-001
(2)
Get access to the blower:
(a)
Remove the oxygen bottle shroud.
(b)
Remove the forward right bulkhead panel in the forward cargo compartment.
S 024-021
(3) AIRPLANES WITH A SEPARATELY INSTALLED CHECK VALVE FOR EACH BLOWER; Remove the blower (Fig. 401):
(a) Loosen the five duct clamps that attach the flexible duct to the blower, the check valve, and the ducts.
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21-58-12
ALL ú ú 10 Page 401 ú Jul 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
BULKHEAD PANEL
COMPARTMENT EQUIPMENT ELECTRONIC COOLING EQUIPMENT BLOWERS ASEE SHROUD OXYGEN BOTTLE
BLOWER ALTERNATE
DUCT
MAIN BLOWER CONNECTORS ELECTRICAL FORWARD BULKHEAD
EACH BLOWER) (5 LOCATIONS CLAMP
FLEXIBLE DUCT CLAMP (2 LOCATIONS (BELOW THE FLEXIBLE DUCT, EACH BLOWER) CHECK VALVE STRUCTURAL SUPPORT EACH BLOWER) EQUIPMENT COOLING BLOWERS A FWD
Equipment Cooling Blower Installation Figure 401
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21-58-12
CHECK VALVE FOR EACH BLOWER ú ú 03 Page 402 ú Nov 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
Equipment Cooling Blower Installation
Figure 401A
E33042
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