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747-400 MAINTENANCE MANUAL
 S 426-004
 (3)  Do this task: "Ratio Changer Actuator Installation" (AMM 27-61-13/401).
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MAINTENANCE MANUAL

8. BUSHING/BOLT
7. ACTUATOR/BOLT
6. BUSHING/BOLT
5. BRACKET/BUSHING
A-A
Inboard Flight Spoiler Ratio Changer Actuator Wear Limits Figure 601 (Sheet 1)
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747-400 MAINTENANCE MANUAL
DESIGN LIMITS WEAR LIMITS
PERMITTED MAXIMUM
DIAMETER
INDEX
WEAR DIAMETER
PART NAME DIM.
NO. MINIMUM MAXIMUM DIMENSION CLEARANCE INCHES INCHES INCHES INCHES (mm) (mm) (mm) (mm)
1
CRANK  ID  0.4370  0.4380  0.4392 
(11.100)  (11.125)  (11.155) 
BUSHING  OD  0.4349  0.4361  0.4339 
(11.047)  (11.077)  (11.021) 
ACTUATOR  ID  0.2495  0.2500  0.2515 
(6.337)  (6.350)  (6.388) 
BOLT  OD  0.2485  0.2495  0.2475 
(6.312)  (6.337)  (6.287) 
BUSHING  ID  0.2495  0.2505  0.2515 
(6.337)  (6.363)  (6.388) 
BOLT  OD  0.2485  0.2495  0.2476 
(6.312)  (6.337)  (6.289) 
BUSHING  ID  0.2495  0.2510  0.2515 
(6.337)  (6.375)  (6.388) 
BOLT  OD  0.2485  0.2495  0.2475 
(6.312)  (6.337)  (6.287) 
BRACKET  ID  0.4370  0.4380  0.4392 
(11.100)  (11.125)  (11.155) 
BUSHING  OD  0.4349  0.4361  0.4339 
(11.047)  (11.077)  (11.021) 
BUSHING  ID  0.2495  0.2510  0.2515 
(6.337)  (6.375)  (6.388) 
BOLT  OD  0.2485 (6.312)  0.2495 (6.337)  0.2475 (6.287) 
ACTUATOR  ID  0.2495 (6.337)  0.2500 (6.350)  0.2515 (6.388) 
BOLT  OD  0.2485 (6.312)  0.2495 (6.337)  0.2475 (6.287) 
BUSHING  ID  0.2495 (6.337)  0.2505 (6.363)  0.2515 (6.388) 
BOLT  OD  0.2485  0.2495  0.2475 
(6.312)  (6.337)  (6.287) 

0.0050
(0.127)
0.0040
2
(0.102)

(0.102)

(0.102)

3
0.0040
0.0040
4
5
0.0050
(0.127)
0.0040
6
(0.102)
7
0.0040
(0.102)
0.0040
8
(0.102)
REFER TO THE OVERHAUL MANUAL FOR REPAIR INFORMATION

1
REPLACE WORN PART  REPAIR WORN PART  REPAIR INSTR 
X  1 
X  1 
X  1 
X 
X 
X 
X 
X  X  1 
X  X  1 
X  X  1 
X  X  1 
X 

Inboard Flight Spoiler Ratio Changer Actuator Wear Limits
Figure 601 (Sheet 2)

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747-400 MAINTENANCE MANUAL
 SPEED BRAKE CONTROL SYSTEM - DESCRIPTION AND OPERATION
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