TRAILING EDGE FLAPS -INBOARD FLAP INBOARD TRANSMISSION ASSEMBLY
EFFECTIVITY BEJ ALL 27-51-00
Page 45
D633W101-BEJ Jan 05/2002
TRAILING EDGE FLAPS -INBOARD FLAP INBOARD SUPPORT MECHANISM
Purpose
The flap transmission, ballscrew, and gimbal use the flap support mechanism to extend and retract the inboard flap and aft flap.
Location
There is one inboard flap inboard support mechanism in each main landing gear wheel well.
Functional Description
During extension, the gimbal turns the drive arm about its fixed point. The drive arm moves the flap carrier beam. This beam attaches to the main flap support which attaches to the main flap. As the carrier beam moves, the main flap extends. The main flap roller and track control the position of the main flap as is extends.
The drive arm also moves the aft flap pushrods to extend the aft flap. Rollers and a track control the rotation of the aft flap as it extends. The aft flap extends beyond the trailing edge of the main flap only at flap positions greater than 20.
Retraction is the opposite of extension.
Training Information Point
When manually operating the flap drive system, observe this caution:
CAUTION: DO NOT LET THE BALLSCREW NUTS HIT THE UPSTOPS OR THE DOWNSTOPS. YOU CAN CAUSE DAMAGE TO THE SHEAROUT IN THE POSITION SENSOR GEARBOX.
EFFECTIVITY BEJ ALL 27-51-00
Page 46
D633W101-BEJ Sep 05/2002
TRAILING EDGE FLAPS -INBOARD FLAP INBOARD SUPPORT MECHANISM
EFFECTIVITY BEJ ALL 27-51-00
Page 47
D633W101-BEJ Jan 05/2002
TRAILING EDGE FLAPS -INBOARD FLAP OUTBOARD TRANSMISSION ASSEMBLY
Purpose
The inboard flap outboard transmission assembly receives power from the torque tubes to move the inboard flap.
Location
The inboard flap outboard transmission assembly is just inboard of the engines. Access to the assembly is through the
fixed and moveable flap support fairings.
Physical Description
The transmission assembly is similar inboard transmission assembly, interchangeable. to but the inboard they are flap not
The transmission assembly weighs approximately 98 lb (45 kg).
Functional Description
The inboard flap outboard transmission assembly operation is similar to the inboard flap inboard transmission assembly.
Training Information Point
The transmission contains oil and it is necessary to do servicing at specified times. Use the oil fill plug.
When manually operating the flap drive system, observe this caution:
CAUTION: DO NOT LET THE BALLSCREW NUTS HIT THE UPSTOPS OR THE DOWNSTOPS. YOU CAN CAUSE DAMAGE TO THE SHEAROUT IN THE POSITION SENSOR GEARBOX.
EFFECTIVITY BEJ ALL 27-51-00
Page 48
D633W101-BEJ Sep 05/2002
TRAILING EDGE FLAPS -INBOARD FLAP OUTBOARD TRANSMISSION ASSEMBLY
EFFECTIVITY BEJ ALL 27-51-00
Page 49
D633W101-BEJ Jan 05/2002
TRAILING EDGE FLAPS -INBOARD FLAP OUTBOARD SUPPORT MECHANISM
Purpose
The flap transmission, ballscrew, and gimbal use the flap support mechanism to extend and retract the inboard flap and the aft flap.
Location
The inboard flap outboard support mechanism is inboard of the engines. Access requires the removal of the fixed and moveable flap support fairings.
Functional Description
During extension, the gimbal turns the drive arm about its fixed point. The drive arm moves the flap carrier to extend the main flap. The drive arm also moves the compression strut. This strut rotates the aft tension beam which uses the pivot link to control the rotation of the main flap.
The drive arm also moves the aft flap pushrods to extend the aft flap. Rollers and a track control the rotation of the aft flap as it extends. The aft flap extends beyond the trailing edge of the main flap only at flap positions greater than 20.
Retraction is the opposite of extension.
Training Information Point
When manually operating the flap drive system, observe this caution:
CAUTION: DO NOT LET THE BALLSCREW NUTS HIT THE UPSTOPS OR THE DOWNSTOPS. YOU CAN CAUSE DAMAGE TO THE SHEAROUT IN THE POSITION SENSOR GEARBOX.
EFFECTIVITY BEJ ALL 27-51-00
Page 50
D633W101-BEJ Sep 05/2002
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