WORN PART REPAIRABLE. REFER TO OVERHAUL MANUAL FOR REPAIR INSTRUCTIONS.
DISTANCE BETWEEN BUSHING FACES ON FLANGES OF UPPER TORSION LINK.
DISTANCE BETWEEN BUSHING FACES ON STEERING COLLAR LUG.
DISTANCE BETWEEN BUSHING FACES ON FLANGES OF LOWER TORSION LINK.
DISTANCE BETWEEN BUSHING FACES ON SHOCK STRUT INNER CYLINDER.
FOR IN-SERVICE REPAIR, INSTALL SPECIAL SHIM (REF FIG. 801, APPROVED REPAIRS).
PREFERRED OVERHAUL REWORK IS TO RESTORE PART TO DESIGN LIMITS USING NEW BUSHINGS.
Nose Landing Gear Torsion Links
Figure 601 (Sheet 2)
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32-21-31
ALL ú ú 01 Page 603 ú Nov 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
NOSE LANDING GEAR TORSION LINKS - APPROVED REPAIR
_________________________________________________
1. General_______
A. This procedure contains the task to put the axial clearance back to the allowable limit.
B. The intent of this procedure is to repair the torsion links until the next main landing gear overhaul. The recommended repair for these parts is to put them back to the initial limits with the new bushings at the landing gear overhaul.
TASK 32-21-31-308-001
2. Nose Landing Gear Torsion Links Axial Clearance Correction (Fig. 801)__________________________________________________________
A. References
(1)
32-21-31/401, Torsion Links - Removal/Installation
(2)
32-21-31/601, Torsion Links - Inspection/Check
B.
Procedure
S 028-002
(1)
Remove the torsion link (Ref 32-21-31/401).
S 228-003
(2)
Do a check of the parts (Ref 32-21-31/601).
(3)
Make the shims if it is necessary (Fig. 801).
S 328-004
NOTE: As an option, shims can be purchased from Lamcsco West, INC.
____
S 428-005
(4) Install the torsion link with the shims between the bushing flanges refer to Fig. 801 and Ref 32-21-31/401.
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32-21-31
ALL ú ú 01 Page 801 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
FOR VIEW A-A, C = C + C
T12 FOR VIEW B-B, C = C + C + C + C
T 3 4 5 6 SHIM INSIDE DIAMETER = W = 1.257 |0.005 INCHES
I
SHIM OUTSIDE DIAMETER = Wo = 1.880 |0.005 INCHES
MINIMUM IN-SERVICE BUSHING FLANGE THICKNESS = F = 0.030 INCH
T
SHIM TO HAVE RHR 32 FINISH AND BE FLAT WITHIN 0.002 INCH MATERIAL: 301 CRES FULL HARD PER AMS 5519 OR EQUIVALENT (W = 0.008 INCH MINIMUM)
ADJACENT BUSHING FLANGES MUST BE FLAT WITHIN 0.005 INCH.
IF F IS WITHIN LIMITS, INSTALL THE SHIMS FOR VIEW A-A AS FOLLOWS TO PUT THE AXIAL CLEARANCE
T
BACK WITHIN THE RECOMMENDED LIMITS.
A. IF C IS NOT LARGER THAN 0.016 INCH,
T
INSTALL ONE SHIM WASHER AT C OR C ADJACENT TO THINNEST FLANGE.
12
B. IF C IS LARGER THAN 0.016 INCH,
T T
INSTALL SHIM WASHERS OF EQUAL THICKNESS (APPROXIMATELY) AT C AND C .
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