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D.  Carefully remove door and hinge assembly from airplane. 
NOTE:  Removing inlet door and hinge assembly from airplane (outside) and nuts (between barrel fitting and grommet in duct) from pushrod inside airplane must be accomplished simultaneously. With nuts removed, inlet door is free to be removed.
E.  Remove hinge pin, washers and cotter pin attaching hinge assembly to door.
F.  Remove hinge assembly from door.
5.  Install Air Inlet Door (Fig. 401)
A.  Apply grease to bushing and hinge pin.
B.  Attach hinge assembly to air inlet door with hinge pin, washers and cotter pin.
NOTE: Hinge pin must be installed with head up.
C.  Carefully install door and hinge assembly on airplane with screws.
D.  Install door and hinge assembly as follows:
(1)  
Check vortex generator flap for restricted movement. If flap does not move freely, refer to 49-15-22, Servicing.

(2)  
Apply grease to pin of vortex generator flap pushrod. 

(3)  
Carefully insert vortex generator flap pushrod through grommet in duct.

(4)  
Prior to inserting pushrod through barrel fitting, start hex nut on threaded end. 

(5)  
As nut is turned on, feed pushrod through barrel fitting. Run nut to upper end of threads.

(6)  
With all three pushrods properly positioned, secure door hinge assembly on airplane with screws.

575 
Jan 20/83  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  49-15-22 Page 401 

APU Air Inlet Door Installation  576 
49-15-22Page 402   Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Oct 20/83 

E.  Position pushrod bearings on actuator arms and install connecting bolts, nuts and washers.
F.  Place nut on inboard end of vortex generator flap pushrod. Do not tighten at this time.
G.  Check inlet door alignment and adjust vortex generator flap (Ref 49-15-00, A/T).
6.  Restore Airplane to Normal Configuration
A.  Close stabilizer trim access door 3701.
B.  Remove placard from BATTERY switch.
505 
May 20/82  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  49-15-22 Page 403 

VORTEX GENERATOR - REMOVAL/INSTALLATION
1.  General
A.  This procedure has these tasks:
(1)  
The removal of the vortex generator.

(2)  
The installation of the vortex generator.

B.  The vortrx generator is installed on the air inlet door.  You must remove the air inlet door from the airplane for the removel of the vortex generator.
2.  Equipment and Materials
A.  Air Source - Regulated, Dry Filtered, Compressed 60-105 psig (414-723.9 kPa)
(22 SCFM) (commercially available)

B.  Scraper - Phenolic, Hard Resin (commercially available)
C.  Tool - Fairing, Plastic or Metal (commercially available)
D.  A00247  Sealant, Pressure and Environmental - BMS5-95
E.  A00435  Adhesive - BMS5-126, Type 3, Class 1
F.  B00130  Alcohol, Isopropyl - TT-I-735
G.  G00034  Cloth, Process Cleaning Absorbent Wiper (Cheesecloth, Guaze) - BMS15-5
H.  G00526  Swab, Cotton - GG-A-616
3.  Vortex Generator Removal (Fig. 401)
A.  Procedure
(1)  
Do this task:  Air Inlet Door Removal (AMM 49-15-22/401).

(a)  To remove the air inlet door, it is necessary to remove the two pushrod bearings from the pushrods.

(2)  
Do these steps to remove the vortrex generator from the air inlet door:

(a)  
Remove the ten nuts, washers and bolts that attach the vortex generator to the air inlet door.

(b)  
Remove the vortex generator, two shims and four filler radius from the air inlet door.

(c)  
Remove the sealant from the air inlet door.

 

4.  Vortex Generator Installation (Fig. 401)
B.  Procedure
(1)  Do these steps to install the vortex generator:
(a)  If you see sealant and/or adhesive on the mating surfaces of the air inlet door, vortex generator and two shims, then do these steps: 1) Remove the remaining sealant and/or adhesive from the mating surfaces of the
air inlet door, vortex generator and two shims with a scraper or an equivalent
tool. 2) Clean the surface with alcohol and a cloth. 3) Use the air source to dry the surfaces of the air inlet door, vortex generator and
two shims.
NOTE:  It is recommanded that you use a pressure of 60-90 psig (414-620 kPa) of air or nitrogen to dry the surfaces.
　
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