21-52-31
ALL ú ú 01 Page 405 ú Nov 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
RAM AIR INLET MODULATION PANEL - REMOVAL/INSTALLATION
_____________________________________________________
1. General_______
A. This procedure removes and installs the modulation panel for the ram air inlet.
TASK 21-52-41-004-004
2. Remove the Modulation Panel for the Ram Air Inlet_________________________________________________
A. Special Tools and Equipment
(1)
F70207-69,-78 Rigging Pin Kit
(2)
Shop Aid (Fig. 401)
B. References
(1) 21-52-11/401, Ram Air Actuator
C. Access
(1)
Location Zones
211 Left Ram Air Duct
213 Right Ram Air Duct
(2)
Access Panels
1305 Left A/C Ram Air Inlet
1302 Right A/C Ram Air Inlet
D. Prepare to Remove the Modulation Panel from the Ram Air Inlet
S 014-002
(1)
Disconnect the ram air actuator from the torque shaft quadrant (Ref 21-52-11/401).
S 014-003
(2)
Remove the access panel 1305 or 1302.
E. Remove the Modulation Panel for the Ram Air Inlet
S 024-005
(1) Do these steps to remove the modulation panel (Fig./401):
(a) Remove the seven screws from the hinge at the forward end of the modulation panel assembly.
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21-52-41
ALL ú ú 02 Page 401 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(b) Do the steps that follow to put the modulation panel assembly in the adjustment position: 1) Turn the modulation panel quadrant until you can install
the rig pins.
2) If you cannot turn the modulation panel quadrant, do the steps that follow: a) Install the shop aid in the inboard end of the
modulation shaft.
NOTE: This causes the shop aid to engage the
____ quadrant attach pin.
b) Turn the shop aid with a wrench.
NOTE: This turns the inlet.
____
(c)
Point the forward panel section of the modulation panel assembly out.
(d)
Remove the eight bolts, nuts, and washers from the panel assembly hinge.
(e)
Remove the forward panel section.
(f)
Move the aft panel section forward until the tracks disengage from the rollers.
(g)
Remove the inlet modulation panel from the inlet opening.
TASK 21-52-41-404-006
3. Install the Modulation Panel for the Ram Air Inlet
__________________________________________________
A. Special Tools and Equipment
(1)
F70207-93 Rigging Pin Kit
(2)
Shop Aid (Fig. 401)
B. References
(1) 21-52-11/401, Ram Air Actuator
C. Access
(1)
Location Zones
211 Left Ram Air Duct
213 Right Ram Air Duct
(2)
Access Panels
1305 Left A/C Ram Air Inlet
1302 Right A/C Ram Air Inlet
D. Prepare to Install the Modulation Panel
S 824-007
(1) If the modulation panel is not in the adjustment position, do the steps that follow:
(a) Turn the modulation panel quadrant until you can install the rig pins.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-52-41
ALL ú ú 01 Page 402 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(b) If you cannot turn the modulation panel quadrant, do the steps that follow: 1) Install the shop aid in the inboard end of the modulation
shaft.
NOTE: This causes the shop aid to engage the quadrant
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