Inboard Trailing Edge Flap Tracks and Ball Screw Actuators
Servicing (Lubrication)
Figure 302 (Sheet 3)

B49993
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747-400 MAINTENANCE MANUAL
TRACK ATTACHMENT FITTING ZERK
FLAP
TRACK

BMS 3-33
(2 LOCATIONS)
MOUNTING
BOLT

INBDFWD
2 POINTS
D
TIE FITTING
ZERK
BMS 3-33
(1 LOCATION)
LINK
INBD FWDTENSION TIE
FLUSH
BMS 3-33
(1 LOCATION)
3
REMOVE THE ACCESS PANEL 572FB 2 POINTS
TO GET ACCESS TO THE TIE FITTING
(AMM 06-09-08/201)

E3
Inboard Trailing Edge Flap Tracks and Ball Screw Actuators
Servicing (Lubrication)
Figure 302 (Sheet 4)

B50011
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747-400 MAINTENANCE MANUAL
GIMBAL ZERK
B
BMS 3-33 (1 LOCATION)
B
TRANSMISSION 
4 
4  GIMBAL CAP 
BALL SCREW  FLUSH 
UNIVERSAL JOINT  4 
ZERK  BMS 3-33 
BMS 3-33  (2 LOCATIONS) 
BMS 3-33  BALL SCREW NUT 
(4 LOCATIONS)  (1 LOCATION)  ZERK 

VENT BMS 3-33FWD (1 LOCATION)
5
INBD
7
9 POINTS
F
TRANSMISSION FLUSH
NOTE:____  TRANSMISSION GEARBOX OIL BMS 3-33 REPLENISHING COVERED IN
(1 LOCATION)
AMM 12-13-13/301. 6
4  ONE MORE LUBE POINT IS ON THE OPPOSITE SIDE (NOT SHOWN)
5  ADD GREASE UNTIL ALL OF THE OLD GREASE AND ACCUMULATED MOISTURE HAS BEEN PUSHED THROUGH THE VENT
6  INBOARD TRANSMISSION ONLY.
ONE, TWO OR THREE LUBRICATION FITTINGS  1 POINT
CAN BE INSTALLED. LUBRICATE AT THE MOST ACCESSIBLE
B-B
LUBE FITTING, IF MORE THAN ONE IS INSTALLED
7
OPTIONAL: TO MAKE SURE VOIDS ARE FILLED, LUBRICATE AT FLAPS 30 AND RELUBRICATE AT FLAPS 25.
Inboard Trailing Edge Flap Tracks and Ball Screw Actuators
Servicing (Lubrication)
Figure 302 (Sheet 5)

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747-400
MAINTENANCE MANUAL

FOREFLAP SEQUENCE CARRIAGE
SEE E
AFT BOGIE AND FOREFLAP FORWARD BOGIE
SEQUENCE CARRIAGE HOOK ROLLERS SEE D
SEE C
CARRIAGE THRUST BEARING
SEE B
AFT ROLLER
UPSTOP ROLLER  SEE  D 
SEE  D  AFT BOGIE AND GENEVA CAM 
SEE  A 

NOTE:  THE LEFT SIDE OF THE INBOARD CARRIAGE IS SHOWN (ALL OTHER INBOARD FLAP CARRIAGES ARE EQUIVALENT).
Inboard Trailing Edge Flap Carriage
Servicing (Lubrication)
Figure 303 (Sheet 1)

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MAINTENANCE MANUAL

AIRLOAD ROLLERS ZERK 
BMS 3-33 (2 LOCATIONS) 
SUPPORT PINS MAIN CARRIAGE ZERK 
BMS 3-33 (2 LOCATIONS) 
SIDE LOAD ROLLER ZERK  SIDE LOAD ROLLER ZERK 
BMS 3-33 (1 LOCATION)  BMS 3-33 (1 LOCATION) 
BMS 3-33 GENEVA CAM (3 LOCATIONS) ZERK  1  BMS 3-33 AIRLOAD ROLLER (2 LOCATIONS) ZERK 
　
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