(2)
Grease - MIL-G-21164 (Ref 20-30-21).

 B.  
References

 (1)
32-21-21/401, Nose Landing Gear Drag Brace

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A

737-300/400/500MAINTENANCE MANUAL 
DRAG LINK TRUNNION PIN  A 
SPERICAL BEARING 
UPPER DRAG BRACE LINK 
A  SHOCK STRUT TRUNNION PIN 
LOWER DRAG BRACE LINK  SPHERICAL BEARING 

STRUCTURE
BOLT, NUT AND WASHER (6 PLACES) EACH BEARING
INBD  30.005 29.995  DRAG BRACE SPHERICAL BEARING 
SHOWN WITHOUT UPPER DRAG BRACE LINK INSTALLED A-A Nose Gear Drag Brace Bearing Installation Figure 401 

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A
737-300/400/500MAINTENANCE MANUAL
 C. Access
 (1)  
Location Zone
 204 Nose Landing Gear

 D.
Prepare to Install the Drag Brace Bearing

 S 164-006
 (1)  
Clean the bearing housings in the structure.

 S 644-007

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

 S 424-008

 (3)  
Install the bearing in housing.

 S 224-009

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

 S 224-010

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

 S 824-020

 (6)  
Do these steps to adjust the shims:

 (a)  
Remove the drag brace bearing.

 (b)  
If it is necessary, remove 0.003-inch laminations from 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.
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A 737-300/400/500MAINTENANCE MANUAL
 (7)  S 714-016Do a check on the distance between bearings.
 (8)  S 824-017If it is necessary, do the steps to adjust the shims.
 (9)  S 414-018Install the drag brace on the nose landing gear (Ref 32-21-21/401).

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737-300/400/500MAINTENANCE MANUAL
 NOSE LANDING GEAR AXLE THREAD AND AXLE NUT - INSPECTION/CHECK
______________________________________________________________
 1.  General
________
 A.  This procedure only has illustration and a wear limits table which shows the data for wear limits. There are no procedures for the access, the removal, or the installation of the parts. Refer to the Nose Landing Gear Wheel and Tire - Removal/Installation for procedures to do these tasks.
 TASK 32-21-71-206-001
 2.  Nose landing Gear Axle Thread and Axle Nut Inspection/Check
　
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