501 
Oct 20/93  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  21-52-11 Page 401 

Ram Air Actuator Installation  500 
21-52-11Page 402   Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  May 15/68 

B.  Rotate torque shaft quadrant by hand and install rigging pin (Fig. 401).
C.  Insert actuator in place and install attaching bolt assembly at upper end only.
D.  Install bonding jumper and electrical connector.
E.  Actuate actuator to fully retracted position.
CAUTION:  HANDHOLD ACTUATOR AWAY FROM THE TORQUE SHAFT QUADRANT ARM DURING THE FOLLOWING TEST TO PREVENT DAMAGE TO THE ACTUATOR OR QUADRANT ASSEMBLY.
(1)  
Provide electrical power.

(2)  
Check that the following circuit breakers on circuit breaker panel P6 are closed:

(a)  
L RAM MOD

(b)  
R RAM MOD

(c)  
RAM MOD CONT

(3)  
Determine that effect of pushing the ground sensing test switch located in the electronics compartment will not adversely affect any of the other systems that utilize the switch. Refer to 32-09-100 for exact location of switch and other systems involved.

(4)  
Depress and hold ground sensing test switch and check that actuator extends a short distance.

(5)  
Release ground sensing test switch and check that actuator retracts.

F.  Adjust actuator end fitting, in or out, until bolt can be inserted through torque shaft quadrant arm and fitting, and install bolt.
NOTE:  If adjustment is necessary actuator end fitting can be adjusted + 0.25 inches. Rewire after adjustment is made.
G.  Remove rigging pin.
H.  Close ram air duct access door.
I.  Remove electrical power if no longer required.
508 
Oct 20/93  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  21-52-11 Page 403 

RAM AIR INLET DEFLECTOR - REMOVAL/INSTALLATION
1. General
A.  When the airplane is on the ground the deflector is normally in the open position. To replace the deflector the operating mechanism must remain in this position.
2.  Prepare for Removal of Ram Air Inlet Deflector
A.  Open ram air duct access door.
B.  Remove electrical plug from ram air actuator.
C.  Loosen, but do not remove, three screws at forward end of inlet fairing. (See figure 401.)
3.  Remove Ram Air Inlet Deflector
A.  Remove five screws holding deflector hinge to structure at forward end of deflector.
B.  Slide deflector aft to disengage deflector tracks from rollers and remove from airplane.
4.  Prepare Ram Air Inlet Deflector for Installation
A.  Check that arms on shaft assembly are extended. (Deflector open position.)
B.  Check that rollers on arms rotate freely.
5.  Install Ram Air Inlet Deflector
A.  Slide deflector tracks over rollers and insert hinge half of deflector in position under inlet fairing. (See figure 401.)
B.  Install the five screws through inlet fairing and hinge.
C.  Tighten the three screws at forward end of inlet fairing.
D.  Reinstall electrical plug on ram air actuator and close ram air duct access door.
500 
Aug 15/67  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  21-52-21 Page 401 

Ram Air Inlet Deflector Installation  500 
21-52-21Page 402   Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  May 15/68 

RAM AIR INLET DEFLECTOR SHAFT ASSEMBLY - REMOVAL/INSTALLATION
1.  General
A.  Prior to deflector shaft removal it is necessary to remove the deflector.
2.  Equipment and Materials
A.  5/16 inch rigging pins
B.  Shop Aid (Fig. 401)
3.  Prepare for Removal of Ram Air Inlet Deflector Shaft Assembly
A.  Remove ram air inlet deflector. Refer to Ram Air Inlet Deflector-Removal, 21-52-21.
B.  Remove fairing panel covering ram air inlet.
4.  Remove Ram Air Inlet Deflector Shaft Assembly (Fig. 401)
A.  Disconnect extension link from drive arm.
B.  Cut lockwire, drive both spring pins out of drive arm and shaft and remove drive arm from shaft.
C.  Remove lower support.
NOTE:  As lower support separates from structure shaft will drop with it, separating itself from upper support.
D.  Tilt shaft assembly and remove from cavity.
5.  Prepare for Ram Air Inlet Deflector Shaft Assembly Installation
　
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