SHIMS
D-D
Main Landing Gear Uplock Assembly Installation
Figure 401 (Sheet 3)
32-32-16
ALL ú ú 02 Page 404 ú Mar 20/95
E84823
A
757
MAINTENANCE MANUAL
(4) S 034-007Remove the shoulder bolt to disconnect the rod end of the uplock actuator from the uplock assembly. Move the actuator out of the way and attach it there.
(5) S 034-008Remove the bolt to disconnect the rod and link from the uplock crank (View A-A).
(6) S 034-009Remove the nut to disconnect the rod from the uplock assembly (View B-B), and remove the rod.
(7) S 034-010Remove the up-and-locked sensors for the main landing gear (AMM 32-61-02/201).
(8) S 034-011Remove the bolt and pivot tube to disconnect the uplock assembly from the uplock attach fitting (View C-C).
(9) S 034-012Remove the hook pivot pin and the pivot tube to disconnect the uplock assembly from the uplock attach fitting (View D-D).
S 024-013
(10)
Remove the uplock assembly.
S 224-038
(11)
Make sure the dimension between the uplock attachment fittings is as shown on Fig. 401 (View D-D). If it is not, do the steps that follow:
(a)
Remove the nuts, bolts and washers that attach the uplock attach fittings to the airplane structure.
32-32-16
ALL ú ú 01 Page 405 ú Jan 28/01
A
757 MAINTENANCE MANUAL
(b)
Remove the Uplock-Operated Door Sequence Valve (AMM 32-32-09/401).
(c)
Remove the uplock-operated sequence valve bracket from the uplock attach fitting.
(d)
Install or remove shims as necessary to get the dimension shown.
(e)
Install the uplock-operated sequence valve bracket on the uplock attach fitting.
(f)
Install the Uplock-Operated Door Sequence Valve (AMM 32-32-09/401).
(g)
Install the nuts, bolts and washers that attach the uplock attach fittings to the airplane structure. Tighten the top nut to 500-575 pound-inches. Tighten the bottom nut to 1350-1650 pound-inches.
TASK 32-32-16-404-014
3. Install the Uplock Assembly for the Main Landing Gear (Fig. 401)
_____________________________________________________
A. References
(1)
AMM 32-00-15/201, Landing Gear Door Locks
(2)
AMM 32-61-02/201, Main Gear Proximity Sensors
B.
Equipment
(1)
Uplock Adapter, MLG - B32054-1
(2)
Hydraulic Test Bench - 1500 psi capability
C.
Consumable Materials
(1)
D00633 Grease - BMS3-33 (Preferred)
(2)
D00013 Grease - MIL-G-23827 (Alternative)
D.
Access
(1)
Location Zones
143 MLG Wheel Well (Left)
144 MLG Wheel Well (Right)
E.
Procedure
S 034-037
WARNING: BE CAREFUL WHEN YOU REMOVE THE SPRINGS FROM THE UPLOCK
_______ ASSEMBLY. THEY CAN COME LOOSE AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Remove the springs from the uplock assembly, if they are installed.
S 434-016
(2)
Lubricate and install the hook pivot pin, pivot tube, washer, nut, and cotter pin to connect the uplock assembly to the uplock attach fitting (View D-D). Tighten the nut to 75-200 pound-inches.
S 434-017
(3)
Lubricate and install the bolt, pivot tube, washers, nut, and cotter pin to connect the uplock assembly to the uplock attach fitting (View C-C). Tighten the nut to 30-75 pound-inches.
32-32-16
ALL ú ú 01 Page 406 ú Jan 28/01
A
757 MAINTENANCE MANUAL
S 434-018
(4)
Install the bolt, washers, and nut to connect the rod and link to the uplock crank (View A-A).
S 434-019
(5)
Install the washer and nut to connect the rod to the uplock assembly (View B-B).
S 434-020
(6)
Lubricate and install the shoulder bolt, washers, nut, and cotter pin to connect the rod end of the uplock actuator to the uplock assembly. Install a washer behind both the bolt head and the nut (Detail A). Tighten the nut to 30-75 pound-inches (3.4-8.5 newton-meters).
S 434-021
(7)
Lubricate and install the nut, retaining washer, and cotter pin to connect the head end of the alternate actuator to the uplock assembly (View D-D). Tighten the nut to 200-600 pound-inches (22.6-67.8 newton-meters).
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 2(63)
