32-21-51
 ALL  ú ú 01 Page 402 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 B. References
 (1)  
32-21-00/401, Nose Landing Gear

 C.
Access

 (1)  
Location Zone
 204 Nose Landing Gear

 D.
Prepare to Install the Trunnion Bearing

 S 164-007
 (1)  
Clean bearing housing in the structure.

 S 644-008

 (2)  
Clean and lightly lubricate all surfaces of the bearing.

 S 424-009

 (3)  
Install the bearing in housing.

 S 224-018

 (4)  
Examine the dimension between the inner side faces of the spherical bearing.

 S 224-019

 (5)  
Find the dimension of shims necessary to get 30.005 to 29.995 inch dimension.

 NOTE: If it is difficult to get the dimension, do the step above
____ with the temperature condition of about 70 degrees farenheit.
 S 824-022
 (6)  
Do these steps to adjust the shims:

 (a)  
Remove the trunnion bearing.

 (b)  
If it is necessary, remove 0.003-inch laminations from the shims to get the necessary thickness for each bearing.

 (c)  
Apply a layer of a primer to each of the surface without lamination.

 (d)  
Install bearings and shims in the structure.

 NOTE: The maximum shim thickness to be installed with each
____
 bearing is 0.066 inch.

 (e)  
Install bolts, washers and nuts (6 places) to hold the bearing.

 (f)  
Tighten the nuts to 65 - 100 pound-inches.

 (7)  
Do a check on the distance between bearings.

 (8)  
If it is necessary, do the steps to adjust the shims.

 S 714-014
 S 824-011
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-21-51
 ALL  ú ú 01 Page 403 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 394-012
 (9)  
After the bearing installation is completed, apply a bead of the sealant around the edge of the bearing flange.

 S 414-013

 (10)
 Install the nose landing gear (Ref 32-21-00/401).

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 32-21-51
 ALL  ú ú 01 Page 404 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 NOSE LANDING GEAR DRAG BRACE BEARING - REMOVAL/INSTALLATION
___________________________________________________________
 1.  General
_______
 A.  This procedure contains two tasks:
 (1)
The removal of the drag brace bearing on the nose landing gear.

 (2)
The installation of the drag brace bearing on the nose landing gear.

 B.  
The drag brace bearing is removed if it has damage or worn areas. The removal of the drag brace on the nose landing gear is necessary to get access to the drag brace bearing.

 TASK 32-21-61-004-001
 2.  Nose Landing Gear Drag Brace Bearing Removal (Fig. 401)
____________________________________________
 A.  References
 (1)
32-21-21/401, Nose Landing Gear Drag Brace

 B.  
Access

 (1)  
Location Zone
 204 Nose Landing Gear

 C.  
Prepare to Remove the Drag Brace Bearing

 S 014-002
 (1)
Remove the drag brace on the nose landing gear (Ref 32-21-21/401).

 S 034-003

 (2)
Remove nuts, washers and bolts to hold the bearing.

 S 024-004

 (3)
Remove the bearing and shims from the structure.

 TASK 32-21-61-404-005
 3.  Nose Landing Gear Drag Brace Bearing Installation (Fig. 401)
_________________________________________________
　
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