(28)
Install the window panel (Ref 25-21-46/401). S 434-052
(29)
Install the doorway lining (Ref 25-21-25/401). S 434-053
(30)
Install ceiling panels (Ref 25-21-71/401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ALL EXCEPT MODULAR LAVATORIES ú
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737-300/400/500MAINTENANCE MANUAL
ELECTRONIC COMPARTMENT - DESCRIPTION AND OPERATION
__________________________________________________
1. General_______
A. The electronic compartment is just forward of the forward cargo
compartment and aft of the nosewheel well (Fig. 1).
B. The compartment may be entered from the ground through a door which is just aft of the nosewheel well. See Chapter 52, Electronic Equipment Compartment External Access Door.
C. Racks in the compartment, for electrical and electronic equipment modules, consist of stanchions and shelves which are hollow to serve as ducts for cooling air. See Chapter 21, Equipment Cooling System, for information on equipment cooling.
D. A moisture shroud is over the forward equipment rack (E1) and over the space between the forward rack and two aft racks. The shroud is made of sections of formed plastic sheet fastened to a metal framework. The framework is fastened to the rack stanchions and the airplane body structure.
Electronic Compartment
Figure 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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737-300/400/500MAINTENANCE MANUAL
E. A fiberglass drip pan is below the space occupied by the forward airstair, to protect the equipment racks from moisture that the airstair may bring into the compartment. A drain tube leads from the drip pan to the airplane drainage system.
F. A receptacle for 115 volt ac 400Hz power is at the forward end of the aft left equipment rack (E2), on rack's inboard face near shelf E2-2. Interphone jacks are in the same area.
G. Insulation blankets line the sidewalls and the bottom of the compartment and adjacent surfaces of the nosewheel well housing.
(1)
Most blankets are fastened by plastic studs and clips; a few have hook-and-pile tape.
(2)
A typical blanket has a layer of fiberglass wool, enclosed between covers which are stitched or cemented together at blanket edges. Edges may have a trim strip and fastener tabs.
(3)
Foamed plastic panels are cemented to the bottom of structural members just below the passenger cabin floor, along both sidewalls from the Station 312 body frame to the compartment aft bulkhead.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-51-00
ALL ú ú 01 Page 2 ú Feb 20/84
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
ELECTRONIC COMPARTMENT DRIP-PAN AND MOISTURE SHROUD - REMOVAL/INSTALLATION
__________________________________________________________________________
1. General_______
A. This procedure supplies the task(s) that follow:
(1) For airplanes with an airstair installation:
(a)
Removal of the electronic compartment drip-pan (airstair) and moisture shroud.
(b)
Installation of the electronic compartment drip-pan (airstair) and moisture shroud.
TASK 25-51-01-004-026
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