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 (1)  Move the ALTERNATE FLAPS arm switch to the ARM position.
 S 865-077
 WARNING: MAKE SURE PERSONS AND EQUIPMENT ARE CLEAR OF THE SLATS AND
_______ FLAPS DURING THIS PROCEDURE. THE SLATS AND FLAPS WILL MOVE DURING THIS PROCEDURE.
 (2)  Move the ALTERNATE FLAPS control switch to the DOWN position to extend the trailing edge flaps to the 1 unit position.
 (a)  Make sure the PTU control valve moves to the open position.
 S 735-041
 (3)  Move the ALTERNATE FLAPS control switch to the DOWN position to extend the trailing edge flaps to the 15 unit position.
 (a)  Make sure the PTU control valve moves to the closed position.
 S 865-054
 (4)
Move the ALTERNATE FLAPS control switch to the UP position to retract the trailing edge flaps to the 1 unit position.

 S 865-043

 (5)  
Move the ALTERNATE FLAPS arm switch to the OFF position.

 S 735-044

 (6)
Remove the DO-NOT-CLOSE tag and close these circuit breakers:

 (a)  
P6-2 Panel
 1) NOSE GEAR AIR/GND
 2) PTU/LG BYP V CONT - 1

 (b)  
Make sure the PTU control valve moves to the closed position.

 

 S 865-055
 CAUTION:_______PRESSURIZE THE SYSTEM B HYDRAULIC RESERVOIR. THE CHECK VALVE FOR THE PTU CAN BE DAMAGED IF YOU OPERATE THE PTU WITHOUT 45-65 PSI IN THE HYDRAULIC RESERVOIR.
 (7)  Pressurize the hydraulic reservoirs (AMM 29-09-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 507 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-067
 WARNING:_______ KEEP PERSONS AND EQUIPMENT CLEAR OF THE FLIGHT CONTROL
 SURFACES, THRUST REVERSERS, AND THE LANDING GEAR.  THESE
 COMPONENTS CAN MOVE SUDDENLY WHEN YOU SUPPLY HYDRAULIC POWER.

 THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (8)  Supply hydraulic power to system A at 3000 psi with a ground service cart or the engine driven pump (EDP) (AMM 29-15-00/201).
 NOTE: The electric motor driven pump does not have the capacity to
____ operate the PTU correctly.
 (a)  Make sure the PTU does not operate.
 S 735-048
 (9)  Open this circuit breaker and attach a DO-NOT-CLOSE tag:
 (a)  
P6-2 Panel 1) NOSE GEAR AIR/GND

 (b)  
Make sure the PTU operates (after approximately 0.5 second).

 S 735-049
 (10) Turn the left Stall Warning (AOA) Vane counterclockwise to its top stop and start the stopwatch.
 (a)  
Make sure the leading edge slats extend fully, equally and smoothly.

 (b)  
Make sure the time necessary to extend the leading edge slats is not more than 4 seconds.

 S 735-050
 (11)
 Turn the left Stall Warning (AOA) Vane back to its zero position (fully clockwise).

 (12)
 Move the ALTERNATE FLAPS arm switch to the ARM position.

 S 865-056
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-22-00
 ALL  ú ú 01 Page 508 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-057
 (13)
 Move the ALTERNATE FLAPS control switch to the UP position to fully retract the trailing edge flaps.

 S 865-051

 (14)
 Remove the hydraulic power from system A (AMM 29-15-00/201).

 S 865-061

 (15)
 Dry motor or operate engine 2 to supply system B hydraulic power (AMM 29-15-00/201 and AMM 71-00-00/201).

 S 865-068

 (16)
 Move the flap control lever to the 1 unit position.

 S 735-059

 (17)
 Move the ALTERNATE FLAPS arm switch to the OFF position.

 (a) Make sure the PTU control valve stays closed.
 S 865-060
 (18)
 Stop the engine (AMM 71-00-00/201).

 S 875-069

 (19)
 Move the rudder pedals (if it is necessary) until the hydraulic pressure in system A and in system B is less than 200 psi.
　
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