SHEAR RIVET (3 LOCATIONS) RIG BEAM A WS2A CABLE WS1A CABLE TURNBUCKLE (EXAMPLE) WS2B CABLE WS1B CABLE
Spoiler Differential Mechanism Quadrant Installation Figure 201 (Sheet 1)
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A
747-400 MAINTENANCE MANUAL
SPOILERS NO. 1 AND 12
`F (C`) TEMPERATURE CABLE RIG LOAD - SPOILER SYSTEM 2TENSION
1 POUNDS (+10/-0) kg (+4.5/-0)
(43)110 118 53
(32)90 109 49
(21)70 100 45
(10)50 92 42
(-1)30 84 38
10 (-12) 75 34
-10 (-23) 67 30
-30 (-34) 59 27
-40 (-40) 53 24
THE SYSTEM MUST BE ADJUSTED WHEN THE
CABLE TENSION, LET THE AMBIENT TEMPERATURE CABLE LOADS ARE MORE THAN |15 LBS (|7 kg)
OF THE AIRFRAME STAY CONSTANT |5`F (|3`C) FROM THE TABLE VALUES.
FOR A MINIMUM OF 1 HOUR.
Spoiler Differential Mechanism Quadrant Installation
Figure 201 (Sheet 2)
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747-400 MAINTENANCE MANUAL
NUT, WASHER AND RIG BEAM
DIFFERENTIAL MECHANISM
A-A
2. RIG BEAM/ BEARING
B-B
Spoiler Differential Mechanism Quadrant Installation
Figure 201 (Sheet 3)
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747-400 MAINTENANCE MANUAL
DESIGN LIMITS WEAR LIMITS
PERMITTED MAXIMUMDIAMETER
INDEX
WEAR DIAMETER
PART NAME DIM.
NO.
MINIMUM MAXIMUM DIMENSION CLEARANCE INCHES INCHES INCHES INCHES (mm) (mm) (mm) (mm)
1
BEARING
ID
0.7495
0.7500
0.7500
(19.037)
(19.050)
(19.050)
SHAFT
OD
0.7486
0.7489
0.7450
(19.014)
(19.022)
(18.923)
RIG BEAM
ID
1.6238
0.6243
1.6275
(41.246)
(41.257)
(41.339)
BEARING
OD
1.6245
1.6250
1.6245
(41.262)
(41.275)
(41.262)
ASSEMBLY
QUADRANT
ID
0.2500
(6.350)
0.2505
(6.363)
BUSHING
OD
0.2508
0.2513
(6.370)
(6.383)
ID
SPLINE
OD
0.0050
(0.127)
0.0030
2
(0.076)
3
0.0003 (0.0076)
4
REPLACE WORN PART REPAIR WORN PART REPAIR INSTR
X
X X 3
X X 3
X
THE WORN PART IS REPAIRABLE. REFER TO THE OVERHAUL MANUAL FOR REPAIR INFORMATION.
REPAIR THE WORN OR DAMAGED PARTS OF THE SPLINE. DISCARD THE PART IF MORE THAN 15 PERCENT OF THE TOTAL SPLINE AREA IS DAMAGED.
Spoiler Differential Mechanism Quadrant Installation
Figure 201 (Sheet 4)
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