D.
Procedure
S 034-007
(1) Disconnect the hydraulic lines from the fuse.
NOTE:____The fuse is in the forward face of Station 1480. You can get the access through the wheel well for the main landing gear.
S 034-008
(2)
Seal the hydraulic lines.
(3)
Hold the fuse and remove the three bolts.
(4)
Remove the fuse.
(5)
Remove the hydraulic fittings from the fuse and seal the fuse ports.
S 034-009
S 024-010
S 034-011
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-13-24
ALL ú ú 01 Page 403 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
TASK 32-13-24-404-012
3. The Body Gear Truck Positioning System Hydraulic Fuse Installation (Fig.__________________________________________________________________ 401)
A. Consumable Materials
(1)
D00258 Lubricant (Skydrol Assembly Lube), MCS 352
B.
References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 12-12-01/301, Hydraulic System
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
(4)
AMM 32-00-30/201, Landing Gear Door Locks
(5)
AIPC 32-13-24 Fig. 1
(6)
AIPC 32-13-67 Fig. 1
C.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
D.
Prepare for the Installation
S 864-016
(1)
Make sure you do not pressurize the hydraulic systems No. 1 and No. 4 (AMM 29-11-00/201).
E.
Procedure
(1) S 434-017Install the hydraulic fittings in the fuse ports with the new O-rings, the gaskets and the backup rings. (a) Lubricate the O-rings, the gaskets and the backup rings with the Skydrol lubricant during the installation.
(2) S 434-018Attach the fuse on the fuse bracket with the three bolts and the washers.
(3) S 434-019Remove the plugs and connect the hydraulic lines to the fuse.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-13-24
ALL ú ú 01 Page 404 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(4) S 864-020Supply the system No. 1 hydraulic power (AMM 29-11-00/201).
(5) S 794-021Examine the hydraulic connections for leaks. (a) Bend the truck hoses at the higher end to make sure there is no leak.
(6) S 874-022Open the bleed valve to bleed the system on the truck actuator. (a) Permit 1 to 2 pints of hydraulic fluid to flow from the bleed valve. (b) Permit more fluid to flow if the bubbles stay in the system.
NOTE:____ If the flow stops, hold the manual bypass lever in a up position for two seconds to set the fuse.
(7) S 434-023Close the actuator bleed valve.
(8) S 284-024Examine the capacity position for the flow fuse. (a) Attach the correct hose to the fitting that bleeds. (b) Let the fluid out of the hose into a container with a minimum capacity of 1 U.S. gallon. (c) Open the fitting with one-half turn. (d) Permit the fluid to flow into the container until the flow stops. (e) If the flow stops, it shows you close the fuse. (f) You must collect 141 |21 cubic inches of fluid into the container
(9) S 864-025Hold the manual bypass lever in an up position for 2 seconds to set the fuse.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-13-24
ALL ú ú 02 Page 405 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 起落架 LANDING GEAR 3(52)
