S 032-030
 CAUTION:_______BE CAREFUL NOT TO CAUSE DAMAGE TO THE INNER CYLINDER. DAMAGE ON THE SURFACE OF THE CYLINDER CAN CAUSE DAMAGE TO THE SEALS.
 (3)  
Cut the static seal. Use a plastic tool and backup strip to prevent damage to the groove.

 S 012-031

 (4)  
Remove the seal from the outer groove in the lower bearing.

 S 142-251

 (5)  
Use a lint free cloth to clean the lower bearing and hydraulic fluid.

 S 842-032

 (6)  
Move the spare static seal out of the spare seal groove.

 S 642-033

 (7)  
Apply a thin layer of hydraulic fluid and petrolatum to the seal and backup rings.

 S 842-034

 (8)  
Move the spare static seal and the backup rings in the outer groove in the lower bearing.

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

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757 MAINTENANCE MANUAL
 G. Replace the Active Dynamic Seal
 S 012-035
 (1)  
Remove the pins to disconnect the seal retainer from the lower bearing.

 S 492-075

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

 S 842-036

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

 S 842-037

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

 S 212-038

 (5)  
Examine the backup rings.

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

 S 032-039
 CAUTION:_______BE CAREFUL NOT TO CAUSE DAMAGE TO THE INNER CYLINDER. DAMAGE ON THE SURFACE OF THE CYLINDER CAN CAUSE DAMAGE TO THE SEALS.
 (6)  
Cut the active dynamic seal. Use a plastic tool and backup strip to prevent damage to the inner cylinder.

 S 012-040

 (7)  
Remove the seal from the inner cylinder.

 (8)  
Move the spare dynamic seal out of the spare seal groove.

 S 642-042

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

 S 842-041
 

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 S 842-043
 (10)
 Move the spare dynamic seal on top of the lower bearing.

 S 842-044

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

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

 S 432-045
 (12)
 Install the ram assembly on the inner cylinder between the dynamic seal and the seal retainer.

 S 842-046

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

 S 032-047

 (14)
 Remove the ram assembly.

 S 092-076

 (15)
 Remove the seal retainer lock assembly.

 S 842-233

 (16)
 Move the seal retainer down.

 S 432-049

 (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 cylinder.
 H. Put the Airplane Back to Its Usual Condition
 S 092-050
　
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本文鏈接地址：757 AMM 飛機維護手冊 起落架 CHAPTER 32 - LANDING GEAR 1(127)