(2)
Disconnect the hydraulic line from the actuator.
(3)
Disconnect and remove the actuator from the airplane.
C.
You must do these steps to install the truck positioning actuator for the body landing gear:
(1)
Put the actuator in its position and install the attachment bolts.
(2)
Fill the actuator with hydraulic fluid.
(3)
Connect the hydraulic line to the actuator and make sure it does not have leaks.
(4)
Bleed the system and set the hydraulic fuse again.
(5)
Fill the hydraulic reservoir if more hydraulic fluid is necessary.
TASK 32-13-15-004-001
2. Body Landing Gear Truck Positioning Actuator Removal____________________________________________________
A. References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 32-00-30/201, Landing Gear Door Locks
(4)
AIPC 32-13-02 Fig. 2
(5)
AIPC 32-13-11 Fig. 1
(6)
AIPC 32-13-15 Fig. 2
B.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
C.
Prepare for the Removal
(1)
Install the ground lockpins for the landing gear (AMM 09-11-00/201).
S 864-003
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-13-15
ALL ú ú 01 Page 401 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 494-004
WARNING: REFER TO AMM 32-00-30/201 FOR THE LOCK INSTALLATION PROCEDURE.
_______ THE FAST MOVEMENT OF DOORS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT IF LOCKS ARE NOT CORRECTLY INSTALLED.
(2)
Install the door locks for the wing and body landing gear (AMM 32-00-30/201).
S 844-005
(3)
Remove pressure from hydraulic system No. 1 (AMM 29-11-00/201).
D.
Removal (Fig. 401)
S 844-006
WARNING: RELEASE THE PRESSURE FROM THE ACTUATOR BEFORE YOU DISCONNECT
_______ THE HYDRAULIC LINES FROM THE ACTUATOR. INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR IF YOU DO NOT DO THIS.
(1)
Open the bleed valve to remove the pressure from the actuator.
S 034-007
(2)
Disconnect the hydraulic line from the actuator.
(a)
Seal the line and the port with a cap.
S 034-008
(3)
Remove the bolt, the nylon spacers and the clamp-up bushings from the two ends of the actuator.
(4)
Remove the actuator from the airplane.
S 024-009
TASK 32-13-15-404-010
3. Body Landing Gear Truck Positioning Actuator Installation
_________________________________________________________
A. Consumable Materials
(1) D00633 Grease - BMS 3-33 (preferred)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-13-15
ALL ú ú 01 Page 402 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
2 ACTUATOR-HEAD END SHOCK STRUT
BLEED VALVE SEE A
SEE B 2 ACTUATOR ROD END NYLON SPACER
1 HYDRAULIC FITTING CLAMP UP BUSHING BOLT
FWD OUTBD
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