SHIMS

D-D

Main Landing Gear Uplock Assembly Installation
Figure 401 (Sheet 3)

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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.

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 (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.

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 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).
　
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