32-11-89
ALL ú ú 02 Page 403 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 434-012
(2) Connect the downlock strut (3) to the reaction link (4). (a) Align the downlock strut with the reaction link. (b) From the aft side, use the thread protector and alignment tool to install the bolt (5). (c) Add the washer and the nut. (d) Install the keeper (6) with the washer and the bolt, and tighten to standard torque. (e) Tighten the nut on the bolt (5) hand tight. (f) If it is necessary, loosen the nut to align the nearest castellation with the cotter pin hole. (g) Safety the nut with a cotter pin.
S 434-013
(3) Connect the downlock strut (3) to the upper (11) and the lower (9) side strut.
(a) (b) (c) (d) Put the upper and the lower side struts together over the lower link (7) of the downlock.Align the holes of the upper and the lower side struts.From the aft side, use the thread protector and alignment tool to install the lower attachment bolt (10).Added the spacer washer (8) and tighten the nut 1000 to 1500 pound-inches lube torque.
S 424-014
(4) Install the downlock springs (2) (AMM 32-32-91/401).
S 644-015
(5) Lubricate the landing gear (AMM 12-21-11/301).
S 584-016
(6) Lift the airplane on jacks for gear retraction (AMM 07-11-11/201).
S 094-017
(7) Remove the ground lockpins (AMM 32-00-01/201) and pressurize the hydraulic system (AMM 29-15-00/201).
S 724-018
(8) Retract and extend the gear and make sure that the reaction link and the related parts parts function correctly.
S 214-019
(9) With the gear down and locked, make sure that the red paint stripes on the lower link (7) of the downlock strut and the lower side strut (9) align.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-11-89
ALL ú ú 02 Page 404 ú Mar 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 584-020
(10) Lower the airplane, and remove the jacks.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-11-89
ALL ú ú 01 Page 405 ú Nov 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
MAIN GEAR WHEEL WELL SEAL SYSTEM - DESCRIPTION AND OPERATION
____________________________________________________________
1. General_______
A. When the airplane is in flight and the landing gear retracted, the main gear wheel well seal system eliminates noise and reduces drag by preventing air from flowing in and out of the wheel well. With landing gear retracted, the wheel well opening is faired to the body by the tire and a special hubcap installed on the outboard wheel and by a fairing ring installed at the lower edge of the wheel well opening. The circular cross section of the tire leaves a space between the tire and outer edge of the wheel well; this space is closed by the seals as the gear is fully retracted.
B. Each wheel well seal consists of a series of flexible blade-type segments around the periphery of the wheel well, except at the openings on the outboard edge where the strut must pass through. Seal segments are held in place by a series of seal retainers on the upper and lower surface of the segments at the outer edge of the segments. The seal segments are secured between the seal retainer segments with bolts.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：737-300 400 500 AMM 飞机维护手册 起落架 LANDING GEAR 1(122)
