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A
747-400 MAINTENANCE MANUAL
 BODY GEAR UPLOCK ROLLER - MAINTENANCE PRACTICES
_______________________________________________
 1.  General
_______
 A.  This procedure has three tasks:
 (1)  
The removal of the uplock roller assembly for the body landing gear (referred to as the uplock roller assembly).

 (2)  
The examination of the uplock roller assembly.

 (3)  
The installation of the uplock roller assembly.

 B.  
You must remove the bolt, the roller, the needle bearings, and the sleeve of the uplock roller for the removal.

 C.  
You must install the uplock roller assembly to do the installation.

 TASK 32-13-13-022-017
 2.  Body Landing Gear Uplock Roller Assembly Removal (Fig. 201)
________________________________________________
 A.  References
 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 32-00-30/201, Landing Gear Door Locks

 (3)  
AIPC 32-13-13 Fig. 2

 B.  
Access

 (1)  
Location Zone
 755 Body Landing Gear, LH
 765 Body Landing Gear, RH

 C.  
Procedure

 S 862-018
 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1) Install the ground locks in all landing gear (AMM 09-11-00/201).
 S 492-019
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Do this task: "Installation of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400
MAINTENANCE MANUAL

SEE A
BOLT 
SLEEVE 
NEEDLE 
BEARINGS 
ROLLER 
A 
ROLLER 
1.  NEEDLE  SUPPORT 
ROLLER  BEARING/BOLT 
SUPPORT 
BOLT 
BUSHING/BOLT2. 
UPLOCK ROLLER  BUSHING/BOLT2. 
A-A 
Body Gear Uplock Roller Installation 
Figure 201 (Sheet 1) 

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747-400
MAINTENANCE MANUAL

INDEX NO.  PART NAME  DIM.  DESIGN LIMITS  WEAR LIMITS  REPLACE PART WORN  REPAIR WORN PART  REPAIR INSTR. 
DIAMETER  WEAR DIM. ALLOWED  DIAM CLEAR-ANCE MAX 
MIN  MAX 
1  BEARING  ID  1.2495  1.2500  1.2532  0.0042  X 
BOLT  OD  1.2480  1.2490  1.2460  X  *[1] 
2  BUSHING  ID  1.250  1.251  1.254  0.0052  X 
BOLT  OD  1.2480  1.2490  1.246  X  *[1] 

*[1] WORN PART IS REPAIRABLE. REFER TO OVERHAUL MANUAL FOR REPAIR INSTRUCTIONS. *[2] LIMITS SHOWN MAY BE EXCEEDED PROVIIDED MAXIMUM CLEARANCE IS NOT EXCEEDED.
WEAR LIMITS
Body Gear Uplock Roller Installation Figure 201 (Sheet 2)
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