S 864-004
(3)
Open these circuit breakers:
(a)
P59 Aft Equipment Panel 1) AFT CARGO DOOR POWER UNITS
(b)
P414 Power Distribution Panel Center - Left 1) 414A21 LOWER CARGO DOOR FWD 2) 414F15 CARGO DOOR CONTROL FWD
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-34-02
ALL ú ú 01 Page 404 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
SEE A
FORWARD CARGO DOOR
ACTUATOR
ARM
DOOR
LIFT
LINK
SWIVEL
CLAMP
FITTING SUPPORT CLAMP SWIVEL LIFT LINK
SUPPORT
FITTING
SWIVEL SWIVEL ACTUATOR
CLAMP CLAMP ARM DOOR
DOOR OPEN
A DOOR CLOSED
Wire Bundle Flexible Conduit
Figure 402 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-34-02
ALL ú ú 01 Page 405 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
SEE B
AFT CARGO DOOR
SWIVEL
CLAMP DOOR
SUPPORT
FITTING
SWIVEL CLAMP
CLAMP
SUPPORT BRACKET
BRACKET
CLAMP DOOR OPEN
SWIVEL CLAMP SUPPORT FITTING DOOR
DOOR CLOSED
B
Wire Bundle Flexible Conduit Figure 402 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-34-02
ALL ú ú 01 Page 406 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
3) 414F16 CARGO DOOR CONTROL AFT
S 014-005
(4)
Remove the ceiling panel that is necessary for access (AMM 25-52-01/401).
S 034-035
(5)
For the forward door, disconnect the DM0471 electrical connector from the lift actuator.
S 034-034
(6)
For the aft door, disconnect the DM0453 electrical connector from the lift actuator.
S 034-007
(7)
Remove the torque tubes from the lift actuator (Fig. 401).
(a)
Remove the bolt that is through the torque tube and the adapter tube (Detail A).
(b)
Push each torque tube into its adapter tube until it is clear of the lift actuator (Detail A).
S 034-008
(8)
Remove the spring pin from the inboard end of the flexible shaft (Fig. 401, sheet 1, Section A-A, if fitted).
S 034-027
(9)
Pull the flexible shaft until it is clear of the lift actuator.
S 034-009
(10)
Remove the screw that holds the brace to the lift actuator (Detail A).
S 024-010
(11)
Remove the four actuator attach bolts (Section B-B).
TASK 52-34-02-404-011
3. Install the Lift Actuator (Fig. 401)_________________________
A. Standard Tools and Equipment
(1)
Bonding Meter
B.
References
(1)
AMM 20-11-14/701, Metal Surface Cleaning
(2)
AMM 20-22-01/601, Electrical Bonding
(3)
AMM 25-52-01/401, Containerized Cargo Compartment Ceiling and Sidewall Linings
(4)
AMM 52-34-00/001, Forward/Aft Cargo Door
(5)
AMM 52-34-01/401, Forward/Aft Cargo Door
(6)
AIPC 52-34-02
(7)
SSM 52-34-01, SSM 52-35-01
