(6)  
Lift the nose of the airplane until you extend the shock strut fully (AMM 07-11-02/201).

 F.
Procedure

 S 038-007
 (1)  
Remove the lower gland nut.

 (a)  
Install the lower cam screw, if it is available, into the drain hole.

 (b)  
Hold the lower centering cam in its position with the finger tight pressure.

 CAUTION: THE GLAND NUT CAN ACCIDENTALLY MOVE THE INNER CYLINDER
_______ DOWN WHEN YOU REMOVE THE NUT FROM THE OUTER CYLINDER. PUT THE CLOTH ON THE EDGE OF THE HOLE IN THE GLAND NUT TO PREVENT DAMAGE TO THE INNNER CYLINDER.
 (c)  Put a cloth around the inner cylinder (13) below the gland nut (9).
 CAUTION: CLEAN THE HYDRAULIC FLUID FROM THE TIRES IMMEDIATELY IF
_______ THE HYDRAULIC FLUID GET ON THE TIRES. THIS WILL PREVENT THE TIRE DETERIORATION.
 (d)  
Put the tray to catch the hydraulic fluid when you remove the gland nut (9).

 (e)  
Remove the gland nut lockplate on the forward side of the nose landing gear for the outer cylinder (2) (section B-B, Fig. 802).

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MAINTENANCE MANUAL

 WARNING: THE BEARING AND THE CAM CAN MOVE DOWN WHEN THE GLAND NUT
_______ IS FREE FROM THE OUTER CYLINDER. THIS WILL CAUSE DAMAGE TO PARTS OR INJURY TO PERSONS.
 (f)  
Use the wrench adapter to loosen the lower gland nut (9).

 (g)  
Move the gland nut (9) down to the bottom of the inner cylinder (13).

 (h)  
Move the scraper ring from the inner cylinder (13) into the removed gland nut (9).

 S 588-008
 (2)  
Install the axle jack at the jack pad for the nose landing gear.

 (a)  
Compress the shock strut for the nose landing gear.

 (b)  
Compress the shock strut until you get 11.5 inches of the chrome surface below the outer cylinder (2) (AMM 07-11-03/201).

 (c)  
Install the lower gland split guide into the lower end of the outer cylinder.

 S 868-009
 (3)  
Remove the lower bearing seals.

 (a)  
Procedure No. 1 (Retainer puller tool for the lower bearing seal is available) 1) Connect the puller tool to the lower bearing /seal carrier

 and attach to the inner cylinder (13). 2) Lower the jack to permit the weight of the inner cylinder to pull the lower bearing from the outer cylinder. 3) Remove the puller tool.

 (b)  
Procedure No. 2 (The puller tool is not available)

 WARNING: DO NOT INCREASE THE PRESSURE MORE THAN 100 PSI ON THE
_______ SHOCK STRUT. DO NOT USE AIR PRESSURE. THE AIR PRESSURE CAN CAUSE INJURY TO PERSONS AND DAMAGE TO MATERIALS.
 1)  Pressurize the shock strut with hydraulic pressure to get access to the lower bearing seals. a) Open the air valve. b) Fill the shock strut with hydraulic fluid through the
 oil valve until the hydraulic fluid flows through the
 air valve. c) Close the air valve. d) Slowly increase the pressure no more than 100 psi on
 the strut until you can see the seals.
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 (c)

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747-400
MAINTENANCE MANUAL

 WARNING: DO NOT PUT YOUR HANDS ON THE INNER CYLINDER OR THE
_______ GLAND NUT. THE BEARING AND THE CAM CAN FALL AND CAUSE INJURY TO THE HANDS OF PERSONS.
 2)  Lower the axle jack if it is necessary while you get the
 lower bearing seals.Procedure No. 3 (The puller tool is not available and the hydraulic pressurization of shock strut is not necessary). 1) Remove the lower cam screw if it is there.
 CAUTION:_______PREVENT THE TORSION LINK TO FALL. IT CAN CAUSE DAMAGE TO THE MOUNTING BRACKET FOR THE SQUAT SWITCH.
 2)  Remove the torsion link bolt to disconnect the higher and the lower torsion links.
 WARNING: DO NOT PERMIT THE BEARING AND THE CAM TO FALL FROM
　
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