(2)  
Access Panels
 1103 Forward Access Door
 3104 Forward Nose Wheel Well Panel

 C.  
Prepare to Remove the Spoiler Ratio Changer

 S 864-002
 (1)
Supply the system A and B hydraulic power (Ref 27-61-00/201).

 S 864-003

 (2)  
Move the speed brake lever to the DOWN position.

 S 864-004

 (3)
Remove the system A and B hydraulic power (Ref 27-61-00/201).

 S 014-005

 (4)  
Remove the access panels:

 (a)  
Open the forward access door.

 (b)  
Remove the left forward nose wheel panel.

 S 014-006
 (5)  
Remove the spoiler mixer (Ref 27-61-21/401).

 D.  
Remove the Spoiler Ratio Changer

 S 034-007
 (1)  
If you will install a new spoiler ratio changer, remove the two-bolt couplings from the spoiler ratio changer (Fig. 401):

 (a)  
Remove the two-bolt coupling from the speed brake input shaft.

 (b)  
Remove the two-bolt couplings from the two spoiler mixer output shafts.

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 27-61-31
 ALL  ú ú 02 Page 401 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SEE  A  CABLES CONTROL AILERON 
INPUT CRANK 
SEE  D 
SPOILER MIXER ACCESS COVER GREASE FITTING SPOILER CHANGER RATIO  CHANGER RATIO INPUT ROD  FORWARD BULKHEAD WHEEL WELL 
RIG PIN A/S-14  SEE  B 
CEILING WHEEL WELL 
CONTROL CABLES SPOILER (WSA1, WSA2, WSB1, WSB2)  CABLES CONTROL SPEED BRAKE (SBA, SBB)  CONTROL CABLES SPOILER WSB1, WSB2) (WSA1, WSA2, 

RIG PIN A/S-3
SPOILER OUTPUT QUADRANTS
FWD
A
RIG PIN
A/S-4

Spoiler Ratio Changer and Mixer Figure 401 (Sheet 1)
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 27-61-31
 ALL  ú ú 02 Page 402 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
TWO-BOLT
COUPLING
SEE C
AILERON
INPUT SHAFT

TWO-BOLT
COUPLING
BOLT
SPOILER MIXER
SPEED BRAKE
OUTPUT SHAFT
WASHER INPUT SPOILER MIXER ROD OUTPUT SHAFT
INPUT SHAFT FWD
SPOILER RATIO CHANGER (MIXER REMOVED)
COTTER
B
PINNUT
INPUT CRANK
D
CABLE SBA
ROD GUARD
MOUNTING
BUSHING
(3 LOCATIONS)

CABLE SBB
INPUT ROD WHEEL WELL FORWARD BULKHEADROD GUARD BOLT (EXAMPLE, 4 LOCATIONS) RIG PIN
S/B-2SPEED BRAKE
SPOILER INPUT QUADRANTRATIO CHANGEROUTPUT MOUNTING BOLT (3 LOCATIONS) QUADRANT
(2 LOCATIONS)
RATIO CHANGER
FWD
C
Spoiler Ratio Changer and Mixer
Figure 401 (Sheet 2)

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 27-61-31
 ALL  ú ú 02 Page 403 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 034-008
 (2)  
Disconnect the spoiler control cables from the spoiler output quadrants (Fig. 402):

 (a)  
Install the cable clamps to keep a small tension on the cable.

 (b)  
Remove the lockwire from the turnbuckles in the main wheel well.

 (c)  
Remove the lock clips from the turnbuckles.

 (d)  
Release the tension in the cables.

 NOTE: Do not disconnect the turnbuckles.
____
 (e)  
Attach a tag to the cables for identification during the installation.

 (f)  
　
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