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D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-61-00-004
THIS PAGE IS INTENTIONALLY LEFT BLANK
FLIGHT SPOILER CONTROL SYSTEM - COMPONENT LOCATIONS
27-61-00
Page 12
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The spoiler control quadrant transmits inputs from the aileron
control system to the flight spoiler control system.
Location
The spoiler control quadrant is above the MLG wheel well. To
get access, remove a floor panel in the passenger
compartment.
The spoiler control quadrant shaft extends from the quadrant
through the MLG wheel well ceiling. The end of the shaft
attaches to the forward bulkhead of the MLG wheel well.
Physical Description
The spoiler control quadrant and shaft have connections to
these items:
* First officer control wheel cables
* Aileron spring cartridge
* Spoiler ratio changer input rod.
The shaft has four shear rivets on the crank that connects to the
aileron spring cartridge. The shear rivets let the spoiler cable
system move if the aileron cable system does not move freely
and the aileron spring cartridge jams.
The shaft also has a breakout mechanism. If there is a jam in
the spoiler mixer or ratio changer, the breakout mechanism
operates. This limits the force that goes into the mixer or ratio
changer and prevents damage to those components.
Functional Description
During normal operation of the lateral controls, control wheel
inputs go through the aileron spring cartridge to the spoiler
control quadrant shaft. The shaft moves the spoiler ratio
changer input rod to make the spoiler cable system move. The
shaft also moves the quadrant, which causes the first officer
control wheel cables to move.
If the captain control wheel cables do not move freely, inputs
from the first officer control wheel cables go to the spoiler
control quadrant. A lost motion device for the first officer control
wheel cables gives a delay to the input. This lost motion device
is part of the aileron transfer mechanism.
See the aileron and aileron trim control system section for more
information on the aileron spring cartridge and the aileron
transfer mechanism. (SECTION 27-11)
Training Information Point
When you replace the shear rivets for the aileron spring
cartridge crank, obey this caution:
FLIGHT SPOILER CONTROL SYSTEM - SPOILER CONTROL QUADRANT
EFFECTIVITY
GUN ALL 27-61-00
Page 13
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-61-00-005
CAUTION: DO NOT MAKE THE SHEAR RIVET HOLES
LARGER. YOU WILL CAUSE DAMAGE TO THE
QUADRANT SHAFT AND THE AILERON INPUT
CRANK.
FLIGHT SPOILER CONTROL SYSTEM - SPOILER CONTROL QUADRANT
EFFECTIVITY
GUN ALL 27-61-00
Page 14
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-61-00-005
FLIGHT SPOILER CONTROL SYSTEM - SPOILER CONTROL QUADRANT
FLIGHT SPOILER CONTROL SYSTEM - SPOILER CONTROL QUADRANT
EFFECTIVITY
GUN ALL 27-61-00
Page 15
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
27-61-00-005
Purpose
The spoiler mixer and ratio changer mix inputs from the control
wheel and the speedbrake lever. They send these commands to
the flight spoilers and the ground spoiler control valve.
Location
The spoiler ratio changer is on the forward bulkhead of the MLG
wheel well. The spoiler mixer attaches to the ratio changer with
four bolts and four splined shafts.
Training Information Point
During removal of the spoiler mixer, you must install a rig pin in
the spoiler mixer and obey this caution:
CAUTION: KEEP THE RIG PIN A/S-14 INSTALLED WHILE THE
SPOILER MIXER IS REMOVED. THE SPOILER
MIXER CAN BE DAMAGED IF YOU REMOVE THE
RIG PIN.
At specified times, you must lubricate rollers in the spoiler
mixer with grease. To do this, remove the roller access covers.
FLIGHT SPOILER CONTROL SYSTEM - SPOILER MIXER AND RATIO CHANGER
EFFECTIVITY
GUN ALL 27-61-00
Page 16
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
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