757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 1(110)

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 (5)  S 034-009Remove the nut with the crowfoot wrench. Install the thread protector. Remove the apex pin to disconnect the upper and lower torsion links.
 (6)  S 034-010Remove the pin to disconnect the lower torsion link from the inner cylinder of the shock strut (View C-C).
 (7)  S 024-011Remove the lower link.
 (8)  S 034-012Remove the nut with the crowfoot wrench. Install the thread protector. Remove the pin to disconnect the upper torsion link from the outer cylinder of the shock strut (View A-A).
 (9)  S 024-013Remove the upper link.
 NOTE:____ Removal of the pin from the upper torsion link will release the lower end of the drag strut. Hold the drag strut out of the work area.

 TASK 32-11-16-404-014
 3. Install the Torsion Links for the Main Landing Gear (Fig. 401)
___________________________________________________
 A. Equipment
 (1)
Thread Protector Set, MLG - B32011-14

 (2)
Crowfoot Wrench - F70312-36, -47

 

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 B. Consumable Materials
 (1)  
C00174 Compound - Corrosion Prevention,
 MIL-C-16173 grade 4

 (2)  
D00633 Grease - BMS 3-33 (Recommended)

 (3)  
D00013 Grease - MIL-G-23827 (Alternative)

 C.
References

 (1)  
AMM 07-11-01/201, Jacking Airplane

 (2)  
AMM 32-00-20/201, Landing Gear Downlocks

 (3)  
AMM 32-12-04/401, Main Gear Strut Door

 (4)  
AMM 32-45-01/401, Main Gear Wheel and Tire

 D.
Access

 (1)  
Location Zones
 731/741 Main Landing Gear (MLG)
 732/742 MLG Body Doors
 733/743 MLG Oleo Doors

 E.
Install the Torsion Links

 S 624-015
 (1)  
Apply the corrosion prevention compound to the inner diameter of the pins.

 S 414-017

 (2)  
Apply grease to the pin, the end cap assemblies, the bolt, the washers, the nut, and the cotter pin. Install these parts to connect the lower torsion link to shock strut inner cylinder of the shock strut. Tighten the nut to 150-250 pound-inches. Loosen to the nearest lock position to install the cotter pin (View C-C).

 S 414-018

 (3)  
Install the thread protector. Apply grease to the pin, the tang washer, the antirotation bolts, and the nut. Install the pin, the tang washer, the nut and the antirotation bolts to connect the upper torsion link and the drag strut to the outer cylinder of the shock strut. Tighten the nut with the crowfoot wrench to 70-90 pound-feet. If it is necessary, loosen the nut to the nearest lock position to install the antirotation bolts (View A-A). A zero torque condition in this position is acceptable.

 S 644-032

 (4)  
Apply grease to the bolt, the bracket for the hydraulic lines, the end cap assemblies, the washers, the nut, and the cotter pin. Install these parts to connect the bracket to the torsion link. Make sure the head of the bolt is outboard. Tighten the nut to 150-200 pound-inches. If it is necessary, loosen the nut to the nearest lock position to install the cotter pin (View A-A).

 

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 S 424-021
 (5)  
Install the thread protector. Apply grease to the apex pin, the spacer, the collar, the antirotation bolt, the washers, and the nuts. Install these parts to connect the upper and the lower torsion links. Tighten the nut with the crowfoot wrench to 150-200 pound-feet. Loosen the nut, then tighten to 5-10 pound-feet for the clearance. Loosen to the nearest lock position to install the antirotation bolt.
　
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