S 865-022
(3)
Put the ALTERNATE FLAP arm switch in the ARM position.Do the FLAPS DOWN Switch Test
S 865-023
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING
_______ EDGE FLAPS AND SLATS. THE FLAPS AND SLATS CAN MOVE QUICKLY WHEN YOU USE THE ALTERNATE FLAP SYSTEM. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1)
Put the ALTERNATE FLAP control switch in the DOWN position to extend the trailing edge flaps.
(a)
Extend the flaps until the FLAPS DOWN switch operates to stop the flaps.
(b)
Make sure the Dimension X is 29.65 to 30.18 inches plus the X1
dimension (Fig. 502).Do the FLAPS UP Switch Test
S 865-024
(1)
Put the ALTERNATE FLAP control switch in the UP position to retract the trailing edge flaps:
(a)
Retract the flaps until the FLAPS UP switch operates and stops the flaps.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-51-87
ALL ú ú 02 Page 506 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(b) Make sure that the dimension X is 0.921 to 0.984 inch
(Fig. 502).
NOTE: This dimension is approximately equal to 1-3/4 to 2-1/4
____ turns between the upstop on the screw yoke and the upstop on the ball nut.
S 825-025
(2)
Do this task: "Mach Trim Flap Switch Adjustment" (Ref 22-21-31/501).
S 825-033
(3)
Do these steps to do a test for the stab trim functions of the flap switch:
(a)
Make sure these circuit breakers on the P6 panel are closed: 1) STABILIZER TRIM ACTUATOR 3 PHASE 2) STABILIZER TRIM CONT
(b)
Set the STAB TRIM MAIN ELEC switch (cutout switch), S272, to the NORMAL (guarded) position.
(c)
Set the Column Actuated Stabilizer Trim switch (Override Switch), S847, (S1 on the P8-47 module) to the NORM (guarded) position.
(d)
Set the flaps to a flaps down position.
NOTE: Use a minimum flap position of 1 unit.
____
(e) Move the two STAB TRIM switches on the captain's control wheel to the NOSE UP position. 1) Hold the STAB TRIM switches in the NOSE UP position until
the stabilizer movement stops. 2) Make sure the captain's STAB TRIM indicator shows 12.5 +/-
1.0 units of trim.
(f) Move the two STAB TRIM switches on the captain's control wheel to the NOSE DOWN position.
NOTE: You will measure how much time is necessary for the
____ stabilizer to move from the lower travel limit to the upper travel limit.
1) Hold the STAB TRIM switches in the NOSE DOWN position until the stabilizer movement stops.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-51-87
ALL ú ú 01 Page 507 ú Jul 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
2) Measure the time necessary for the stabilizer to move from
the lower travel limit to the upper travel limit. 3) Release the two STAB TRIM switches. 4) Make sure the stabilizer moves from its lower travel limit
to its upper travel limit in 17 - 24 seconds. 5) Make sure the captain's STAB TRIM indicator shows
0.0 +/- 1.0 units of trim.
(g) Set the flaps to the up position.
NOTE: The flaps will be at 0 units or in the the FLAPS UP
____
position.
(h)
Set the stabilizer to a minimum of 4 units of trim.
(i)
Set the STAB TRIM switches on the captain's control wheel to the NOSE DOWN position. 1) Hold the STAB TRIM switches in the NOSE DOWN position until
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：737-300 400 500 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 5(3)
