EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-57-00
ALL ú ú 15A Page 516 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 715-033
(10)
At the master cargo control panel, M1, hold the LOCAL DRIVE switch to the FWD position.
S 215-278
(11)
Make sure the PDUs 19L1 and 19L2 move clockwise from the 90-degree lateral position to the 0-degree fore-aft position.
S 715-280
(12)
Release the LOCAL DRIVE switch to the OFF position and make sure the PDUs do not continue to turn.
NOTE: PDU 19L1 completes its turn cycle before PDU 19L2
____
starts its cycle.
S 715-034
(13)
At the local cargo control panel 19R, hold the LOCAL DRIVE switch to the FWD position.
S 215-281
(14)
Make sure the PDUs 19R1 and 19R2 move clockwise from the 90-degree lateral position to the 0-degree fore-aft position.
S 715-283
(15)
Release the LOCAL DRIVE switch to the OFF position and make sure the PDUs do not continue to turn.
S 715-035
(16)
At the master cargo control panel, M1, hold the DRIVE CONTROL switch to the OUT position.
S 215-284
(17)
Make sure the PDUs 19L1, 19L2, 19R1 and 19R2 move counterclockwise from the 0-degree fore-aft position to the 90-degree lateral position.
S 215-285
(18)
Make sure all four PDUs start to turn in the outboard direction after all four PDUs reach the 90-degree lateral position.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-57-00
ALL ú ú 15A Page 517 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 715-286
(19) Release the DRIVE CONTROL switch to the OFF position and make sure the PDUs do not continue to turn.
NOTE:____PDUs 19L2, 19R1, and 19R2 complete their turn cycle before PDU 19L1 starts its cycle.
S 715-036
(20)
At the master cargo control panel, M1, hold the DRIVE CONTROL switch to the IN position.
S 215-287
(21)
Make sure the PDUs 19L1, 19L2, 19R1 and 19R2 start to turn in the inboard direction.
S 715-288
(22)
Release the DRIVE CONTROL switch to the OFF position and make sure the PDUs do not continue to turn.
S 715-037
(23)
At the local cargo control panel 20L, hold the LOCAL DRIVE switch to the AFT position.
S 215-289
(24)
Make sure the PDUs 19L1 and 19L2 move clockwise from the 90-degree lateral position to the 0-degree fore-aft position.
S 215-290
(25)
Make sure the PDUs 19L1, 19L2 and 20L do not turn until after PDUs 19L1 and 19L2 reach the 0-degree fore-aft position.
S 715-291
(26)
Release the LOCAL DRIVE switch to the OFF position and make sure the PDUs do not continue to turn.
NOTE: PDU 19L1 completes its turn cycle before PDU 19L2
____
starts its cycle.
S 715-038
(27) At the local cargo control panel 20R, hold the LOCAL DRIVE switch to the AFT position.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-57-00
ALL ú ú 13A Page 518 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 215-292
(28)
Make sure the PDUs 19R1 and 19R2 move clockwise from the 90-degree lateral position to the 0-degree fore-aft position.
S 715-294
(29)
Release the LOCAL DRIVE switch to the OFF position and make sure the PDUs do not continue to turn.
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