(i)  
Align the nearest lock tab slots.

 (j)  
Make sure that the dimension A minus 7.924 (Fig. 802) is equal to the dimension B | 0.030 inches. 1) If the dimension B is less than the limit, disassemble the

 shock strut. 2) Do a check for the twisted seals or the clearance between the parts.

 (k)  
After assemble and tighten the parts correctly, install the gland nut lockplate.

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747-400 MAINTENANCE MANUAL
 G. Procedure (Alternative Method)
 S 038-018
 (1)  
Remove the lower bearing assembly.

 (a)  
Put a cloth around the inner cylinder for the shock strut below the gland nut (9).

 CAUTION: KEEP THE GLAND NUT (9) AND THE OUTER CYLINDER (2) TOGETHER
_______ AS A SET. IF THE OUTER CYLINDER THREADS WERE REWORKED, THE GLAND NUT WOULD BE UNIQUE TO THE OUTER CYLINDER. A DIFFERENT GLAND NUT WILL NOT FIT THE OUTER CYLINDER TIGHTLY AND CAN CAUSE THE LANDING GEAR FAILURE DURING THE OPERATION.
 (b)  
Remove the gland nut lockplate and use the wrench adapter to loosen the gland nut (9).

 (c)  
Move the gland nut (9) down to the inner cylinder yoke.

 (d)  
Lift the airplane (or lower the truck into a pit) if it is necessary to give the clearance to install the puller tool.

 (e)  
Move the scraper ring and the retainer down to the gland nut (9).

 CAUTION: CLEAN THE HYDRAULIC FLUID FROM THE TIRES IMMEDIATELY IF
_______ THE FLUID FALL ON THE TIRES. THIS WILL PREVENT THE TIRE DETERIORATION.
 (f)  
Put the tray to catch the hydraulic fluid when remove the lower bearing (12) and the seal retainer.

 (g)  
Attach the lower bearing puller to the bearing assembly with three screws.

 (h)  
Connect the sleeve of the puller to the chrome surface of the inner cylinder (13).

 S 588-019
 (2)  
Lift the airplane or lower the inner cylinder (13) until you can get the spare seal (6) (AMM 07-11-01/201).

 (a)  
Move the lower bearing assembly down to the gland nut (9) at the top of the yoke.

 (b)  
Lift the airplane or lower the inner cylinder (13) until you get sufficient clearance to remove the seal (8).

 S 028-021
 (3)  
Remove the seals.

 (a)  
Remove the used backup rings (7) and (11).

 (b)  
Cut the used seals (6) and (8) and remove them from the groove in the lower bearing.

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747-400 MAINTENANCE MANUAL
 (c)  Use the plastic tool to prevent damage to the inner cylinder surfaces.
 S 118-117
 CAUTION: PUT A PROTECTION STRIP BETWEEN THE SEAL AND THE SURFACE OF
_______ THE INNER CYLINDER WHILE YOU CUT THE SEALS. THIS WILL PREVENT THE DAMAGE TO THE SURFACE OF THE INNER CYLINDER. THE NICKS OR SCRATCHES ON THE INNER CYLINDER WILL CAUSE DAMAGE TO THE INNER CYLINDER. THEY WILL ALSO CAUSE DAMAGE TO SEALS WHILE THE SEALS MOVE THROUGH THE NICKS OR SCRATCHES.
 (4)  
Clean all parts fully with hydraulic fluid specified on the shock strut nameplate.

 S 218-023

 (5)  
Examine that all the backup rings (7 and 11) are serviceable.

 (a)  
Replace the backup ring if they have nicked, scratched or damaged.

 NOTE: The recommended installation procedure is to replace all
____ the used backup rings with new backup rings. Use the used backup rings only after a fully inspection and new rings are not available.
 S 428-024
 (6)  Install the seals.
 CAUTION: USE ONLY THE TYPE OF HYDRAULIC FLUID SHOWN ON THE SHOCK
_______ STRUT NAMEPLATE. DIFFERENT TYPES OF FLUID WILL CAUSE DAMAGE TO THE SEALS.
　
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