S 865-016

 (8)  
Set these switches on the P5 forward overhead panel:

 (a)  
Remove the DO-NOT-OPERATE tag from the BAT switch.

 (b)  
Set the BAT switch to the ON position.

 (c)  
Remove the DO-NOT-OPERATE tag from the APU master switch.

 (d)  
Set the APU master switch to the OFF position.

 (e)  
Set the BAT switch to the OFF position.

 TASK 49-15-00-705-017
 4. Vortex Generator Flap Adjustment (Fig. 503)
________________________________
 A. Access
 (1)  Location Zones
 101 Control Cabin (Left)
 701 Tail Compartment

 B. Procedure
 NOTE: The air inlet door and the door switch must be adjusted before the
____
 adjustment of the vortex generator flap.

 S 865-018
 (1)  Set these switches on the P5 forward overhead panel:
 (a)  Set the APU master switch to the OFF position and attach a DO-NOT-OPERATE tag.
 NOTE: The air inlet door must be in the closed position.
____
 (b)  Set the BAT switch to the OFF position and attach a DO-NOT-OPERATE tag.
 S 015-019
 (2)
Open the access door to the actuator for the air inlet door.

 S 825-020

 (3)  
Align the vortex generator flap:

 (a)  
Remove the set screw of the vortex generator 3 to 4 turns.

 (b)  
Loosen the No. 1 and No. 2 nuts until they are clear of the barrel fittings.

 NOTE: Make sure you remove the No. 1 nut to the end of the
____ threads. This will permit clearance when you examine the position of the air inlet door and the vortex generator flap.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////

INBD
AIR INLET DOOR - OPEN POSITION
BAPU Air Inlet Adjustment Figure 503
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(c)  Pull out on the trailing edge of the air inlet door.
 NOTE: This will make sure that the air inlet door and the
____ vortex generator flap are tight. The vortex generator flap must be tightly set against the stop for the door closed position.
 (d)  
Turn the No. 2 nut by hand to tighten it.

 (e)  
Tighten the No. 2 nut with 1 1/2 more turns.

 (f)  
Turn the No. 1 nut tightly against the barrel fitting.

 (g)  
Install a lockwire to hold the No. 1 and the No. 2 nut.

 (h)  
Set these switches on the P5 forward overhead panel: 1) Remove the DO-NOT-OPERATE tag from the BAT switch. 2) Set the BAT switch to the ON position. 3) Remove the DO-NOT-OPERATE tag from the APU master switch. 4) Set the APU master switch to the ON position and attach a

 DO-NOT-OPERATE tag. 5) After the air inlet door opens, set the BAT switch to the OFF position and attach a DO-NOT-OPERATE tag.

 (i)  
Turn the set screw until it touches the flap lever.

 (j)  
Tighten the set screw with 1 1/2 more turns.

 S 865-021
 (4)  Set these switches on the P5 forward overhead panel:
 (a)  
Remove the DO-NOT-OPERATE tag from the BAT switch.

 (b)  
Set the BAT switch to the ON position.

 (c)  
Remove the DO-NOT-OPERATE tag from the APU master switch.

 (d)  
Set the APU master switch to the OFF position.

 NOTE: This will close the air inlet door.
____
 S 715-022
 (5)  Do a test of the vortex generator flap:
 (a)  Set the APU master switch from the ON position to the OFF position again and again.
　
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