27-51-00
ALL ú ú 01 Page 204 ú Nov 15/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
TRAILING EDGE FLAP SYSTEM - ADJUSTMENT/TEST
___________________________________________
1. General_______
A. These are tasks in this procedure:
(1)
There is an operational test of the trailing edge flaps
(2)
There is a task for the adjustment of the trailing edge flaps
(3)
There is a system test of the trailing edge flaps
(4)
There is a functional test of the asymmetry system
(5)
There is an operational test of the asymmetry system
(6)
There are two tasks for the functional test of the flap load limiter system.
TASK 27-51-00-715-001
2. Operational Test - Trailing Edge Flap System____________________________________________
A. General
(1)
During the operational test, you make sure the operation of the trailing edge flaps is satisfactory. The test permits you to monitor the functions of the flap system on the ground with hydraulic power supplied by the engine-driven pumps or the ground power. The operational test does not make sure the flaps are adjusted correctly. You must not use this test as an alternate for the system test.
(2)
During the operational test you use the flap position indicators to find the flap positions. Thus, you must make sure the adjustment of the position indicator system for the trailing edge flaps is correct before you do the operational test.
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 27-51-00/201, Trailing Edge Flap System
C.
Access
(1)
Location Zone
101, 102 Control Cabin
D.
Prepare for the Operational Test of the Trailing Edge Flap System
(1)
Supply the electrical power (AMM 24-22-00/201).
S 865-002
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 865-003
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).
NOTE: When hydraulic system B is powered by the electric motor
____ driven pump and hydraulic system A has power, a transient low pressure as low as 800 psi and hydraulic noise can occur when you operate the flaps. This noise occurs only during unusual conditions and is not a cause for alarm. This noise will not cause damage to the airplane.
S 215-004
CAUTION: MAKE SURE THE THRUST REVERSERS AND THE ENGINE COWLS ARE CLOSED
_______ BEFORE YOU OPERATE THE LEADING EDGE FLAPS. THE FLAPS CAN CAUSE DAMAGE TO THE AIRPLANE.
(3)
Make sure the inboard thrust reverser and the engine cowls are closed.
E.
Do the Operational Test of the Trailing Edge Flap System
S 715-005
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.
(1) Do a test of the hydraulic operation of the flaps:
NOTE: Use the flap position indicator to find the position of the
____
flaps.
(a) Move the flap control lever to the 1, 2, 5, 15, 25, 30 and 40-unit detents. 1) Make sure the flaps extend to the correct position.
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27-51-00
ALL ú ú 02 Page 502 ú Nov 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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