B.
Consumable Materials
(1)
D00013 Grease - MIL-G-23827
C. Parts ~.............................................................................. | AMM | | AIPC | ................. ...........................| | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ...............................................................................| | 201 | 24 | Servomotor | 27-81-03 | 01 | 400 | | | 42 | Screw | | | 415 | | | 43 | Washer | | | 420 | | | 45 | Wire Bundle Clip | | | 340 | | | 46 | Mounting Bracket | | | 480 | | | 47 | Grounding lug | | | 430 | 2......…........…...................................…...........….....…........1
D. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 27-81-00/201, Leading Edge Flap System
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
(4)
AMM 36-00-00/201, Pneumatic System
(5)
SSM 27-81-01, SSM 27-81-02, SSM 27-81-03, SSM 27-81-04, SSM 27-81-05, SSM 27-81-06
(6)
WDM 27-51-21, WDM 27-51-22, WDM 27-81-11, WDM 27-81-12, WDM 27-81-21, WDM 27-81-22, WDM 27-81-31, WDM 27-81-32, WDM 27-81-41, WDM 27-81-42, WDM 27-81-81, WDM 27-81-82
E.
Access
(1)
Location Zone
512 Krueger Flap Inboard, LH
523 Variable Camber Flap, LH
525 Variable Camber Flap, LH
535 Variable Camber Flap, LH
612 Krueger Flap Inboard, RH
623 Variable Camber Flap, RH
625 Variable Camber Flap, RH
635 Variable Camber Flap, RH
F.
Procedure
S 422-159
(1)
Install the directional control servomotor assembly (Fig. 201):
(a)
Apply a thin layer of grease to the servomotor spline.
(b)
Remove the cover from the PDU opening.
(c)
Engage the servomotor splines with the drive unit.
(d)
Install the servomotor (24) with four washers (43) and screws (42).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-81-03
ALL ú ú 02 Page 230 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(e) Tighten the screw 25 pound-inches more than the run-on torque.
(f) Make sure the grounding lug (47) is installed.
(g) Install the connector mounting bracket (46).
(h) Install the lockwire.
(i) Install two wire bundle clips (45).
S 432-073
(2) Connect the electrical connector P101 (44).
S 432-170
(3) Install the electrical connector clamps if they are available.
S 432-074
(4) Connect these primary (pneumatic) drive power electrical connectors (13):
(a) DM876 and DM885 (PDU No. 1)
(b) DM878 and DM883 (PDU No. 2)
(c) DM879 and DM882 (PDU No. 3)
(d) DM880 and DM881 (PDU No. 4)
S 432-075
(5) Connect these alternate (electrical) drive power connectors (33):
(a) DM876B and DM885B (PDU No. 1)
(b) DM878B and DM883B (PDU No. 2)
(c) DM879B and DM882B (PDU No. 3)
(d) DM880B and DM881B (PDU No. 4)
S 092-076
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT DO THE STEPS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(6) Do this task: "Safety Lock Removal and Leading Edge Flap Activation" (AMM 27-81-00/201).
S 862-077
(7) Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
S 862-078
(8) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P6 Main Power Distribution Panel
1) 6L21 LE FLAP ELEC CONT GRP B DRIVE 1
2) 6L22 LE FLAP ELEC CONT GRP A DRIVE 2
3) 6L23 LE FLAP ELEC CONT GRP A DRIVE 3
4) 6L24 LE FLAP ELEC CONT GRP A DRIVE 4
5) 6E3 PRIM LE FLAP CONT GRP A AC
6) 6E4 PRIM LE FLAP CONT GRP A DC
7) 6E5 PRIM LE FLAP CONT GRP B AC
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