WARNING: THE TRUCKS OF THE LANDING GEAR WILL MOVE WHEN THE
_______ HYDRAULIC SYSTEM IS PRESSURIZED. MAKE SURE PERSONS AND EQUIPMENT ARE CLEAR OF THE TRUCK PATH.
(g)
Supply power to the No. 4 hydraulic system (AMM 29-11-00/201).
(h)
Measure the clearance between the sensor and the target with the truck in the tilted position.
(i)
Seal the shim stack. 1) Apply a thin layer of primer on the bare sides of the
shims. 2) Apply sealant on the shims with a short bristle brush.
S 582-024
(4) Lower the airplane and remove the jacks (AMM 07-11-01/201).
S 092-025
WARNING: WHEN YOU REMOVE THE DOOR LOCK, MAKE SURE YOU DO THE LOCK
_______ REMOVAL PROCEDURE (REF 32-00-30/201). FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(5)
Remove the main gear door locks (AMM 32-00-30/201).
S 862-035
(6)
Remove hydraulic power from the No. 4 hydraulic system (AMM 29-11-00/201).
TASK 32-61-22-722-051
8. Test of the Tilt Sensor for the Wing Landing Gear
_________________________________________________
A. General
(1) This test makes sure the Tilt Sensor for the Wing Landing Gear operates correctly.
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32-61-22
ALL ú ú 04 Page 215 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(2)
Do this test of the sensors with the landing gear in the down and locked position and the airplane on the ground.
B.
References
(1)
AMM 24-22-00/201, Electrical Power
(2)
AMM 32-00-30/201, Landing Gear Door Locks
C.
Equipment
(1)
A32102-25 Proximity Sensors Actuator/Deactuator
Set or
(2)
KHT 8-750-01 Go-Gauge (Actuator), ELDEC Corporation,
Aircraft Systems Division, PO Box 3002, Bothell WA,
98041-3002
(Optional to A32102-25)
D. Access
(1)
Location Zone
222 Control Cabin - RH
735 Wing Landing Gear, LH
745 Wing Landing Gear, RH
E.
Prepare the Airplane for the Test
S 412-052
WARNING:_______MAKE SURE THE GROUND LOCKS ARE INSTALLED ON THE WING GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Make sure the ground locks are installed on the wing gear
(AMM 09-11-00/201).
S 412-053
WARNING:_______MAKE SURE THE DOOR LOCKS ARE INSTALLED ON THE WING GEAR. FAST MOVEMENT OF THE DOORS FOR THE LANDING GEAR CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2) Install the door locks for the wing gear (AMM 32-00-30/201).
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ALL ú ú 04 Page 216 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 862-054
(3)
Supply electrical power (AMM 24-22-00/201).
S 742-055
(4)
Do these steps to prepare the CMC for the test (Fig. 202):
NOTE: This test uses the CMCs.
____
(a)
Push the MENU key on the CDU to get the CDU MENU.
(b)
Push the line-select key, adjacent to the <CMC display.
(c)
Push the line-select key, adjacent to the <OTHER FUNCTIONS display.
(d)
Push the line-select key, adjacent to the <INPUT MONITORING display.
(e)
Push the CDU keys E/070/270/00.
(f)
Push the key 1L.
(g)
Push the NEXT PAGE key.
(h)
Push the CDU keys E/070/272/00.
S 722-056
(5)
Do the Test of the Tilt Sensor:
(a)
Push the PREVIOUS PAGE key or the NEXT PAGE key as necessary to show the logic condition that follows:
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