S 092-092

 (36)
 Remove the axle jacks.

 S 092-093

 (37)
 Remove the strap from the puller assembly and the fork of the inner cylinder.

 S 012-094

 (38)
 Remove the puller pins from the lower bearing.

 S 842-095

 (39)
 Let the lower bearing move down and stay on the puller assembly.

 G.
Replace the Active and the Spare Seals

 S 012-096
 (1)  
Remove the pins to disconnect the seal retainer from the lower bearing.

 S 492-089

 (2)  
Install the lock assembly to hold the spacer and seal retainer inside the outer cylinder.

 S 842-097

 (3)  
Move the lower bearing up and then down to show the dynamic seal (1).

 (4)  
Move the backup rings away from the dynamic seal (1).

 (5)  
Move the backup rings out of the groove for the static seal.

 S 212-100

 (6)  
Examine the backup rings.

 (a)  
Replace the backup rings if it is necessary.

 S 842-098
 S 842-099
 

 32-11-25
 ALL  ú ú 01 Page 221 ú Sep 28/99
 
A

757
MAINTENANCE MANUAL

 S 032-101
 CAUTION:_______BE CAREFUL NOT TO CAUSE DAMAGE TO THE INNER CYLINDER. DAMAGE OF THE SURFACE OF THE INNER CYLINDER CAN CAUSE DAMAGE TO THE SEALS.
 (7)  
Cut the static (2) and the dynamic (1) seals. Use a plastic tool and backup strip to prevent damage to the surface of inner cylinder and the lower bearing groove.

 S 012-102

 (8)  
Remove the seals from the inner cylinder.

 S 642-103

 (9)  
Apply a thin layer of hydraulic fluid and petrolatum to the new dynamic seal and backup rings (1).

 S 842-104

 (10)
 Move the dynamic seal (1) on top of the lower bearing.

 S 862-105

 (11)
 Put the seal and backup rings (1) in position for the installation.

 NOTE: Do not extend the seals more than necessary for the
____
 installation.

 S 432-106
 (12)
 Install the ram assembly on the inner cylinder between the dynamic seal and the seal retainer.

 S 842-107

 (13)
 Move the ram assembly down to push the dynamic seal (1) in position in the lower bearing.

 (14)
 Remove the ram assembly.

 (15)
 Remove the seal retainer lock assembly.

 (16)
 Move the seal retainer down.

 S 032-108
 S 092-090
 S 842-109
 

 32-11-25
 ALL  ú ú 01 Page 222 ú Sep 28/99
 
A
757 MAINTENANCE MANUAL
 S 412-133
 (17) Install the pins to connect the seal retainer to the lower bearing.
 NOTE: Make sure the pins are installed in the correct orientation
____ as shown in Fig. 201. Make sure the pins stay in position when you move the lower bearing up into the outer cyclinder.
 S 642-111
 (18)
 Apply a thin layer of hydraulic fluid and petrolatum to the new static seal and backup rings (2).

 S 842-112

 (19)
 Move the static seal (2) up the inner cylinder and in the outer groove in the lower bearing.

 S 842-113

 (20)
 Move the backup rings in the correct position, adjacent to the seal.

 S 642-114

 (21)
 Fill the grooves for the spare seal with MIL-G-4343 grease.

 S 842-115

 (22)
 Move the spare seals (3 and 4) up the inner cylinder.
　
中國航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機維護手冊 起落架 CHAPTER 32 - LANDING GEAR 1(131)