(a)
Supply the system B hydraulic power (AMM 27-51-00/201).
(b)
Move the flap control lever to the 15-unit detent.
(c)
During the flap extension, put a 0.04 inch thick steel sheet between the switch and the magnet. 1) Make sure the red pointer on the flap bypass valve moves to
the position 2.
SUPPORT
Figure 508
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737-300/400/500MAINTENANCE MANUAL
2) Make sure the flap extension stops.
(d)
Remove the steel sheet from between the switch and the magnet. 1) Make sure the red pointer on the bypass valve moves to the
position 1. 2) Make sure the flaps move to the 15-unit position.
(e)
Move the flap control lever to the UP detent.
(f)
During the flap retraction, put a 0.04 inch thick steel sheet between the switch and the magnet. 1) Make sure the red pointer on the flap bypass valve moves to
the position 2. 2) Make sure the flap retraction stops.
(g)
Remove the steel sheet from between the switch and the magnet. 1) Make sure the red pointer on the bypass valve moves to the
position 1. 2) Make sure the flaps move to the fully retracted position.
F. Put the Airplane Back to Its Usual Condition
S 865-064
(1)
Remove the system B hydraulic power (AMM 27-51-00/201).
S 865-065
(2)
Remove the electrical power (AMM 24-22-00/201).
TASK 27-51-00-725-066
5. Functional Test - Trailing Edge Flap Asymmetry System_____________________________________________________
A. Consumable Materials
(1)
C00259 Primer BMS 10-11, Type 1
(2)
D00633 Grease BMS 3-33 (Recommended)
(3)
D00013 Grease MIL-G-23827 (Alternate)
B.
References
(1)
SWPM 20-20-00, Standard Wiring Practices Manual
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 27-51-00/201, Trailing Edge Flap System
C.
Access
(1)
Location Zone 101, 102 Control Cabin 307, 407 Wing Trailing Edge Outboard Flap and Spoilers 309, 409 Wing Trailing Edge Inboard Flap and Spoilers
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D. Procedure
S 865-067
(1) Supply the electrical power (AMM 24-22-00/201).
S 865-068
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, TRAILING EDGE FLAPS, LEADING EDGE FLAPS AND SLATS, SPOILERS LANDING GEAR AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Supply the system B hydraulic power (AMM 27-51-00/201).
S 865-069
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3)
Move the flap control lever to the UP detent to retract the flaps.
(a)
Stop for 2 minutes to permit the flaps to fully retract.
S 865-070
(4)
Remove the system B hydraulic power (AMM 27-51-00/201).
S 725-071
(5)
Do a test of the left asymmetry shutoff system:
(a)
Measure and make a record of the dimension X at the No. 4 flap ballscrew (Fig. 505). Refer to this as the dimension X1.
(b)
Use the alternate flap system to extend the flaps to the 25-unit position: 1) Put the ALTERNATE FLAP arm switch in the ARM position. 2) Put the ALTERNATE FLAP control switch in the DOWN position
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