S 715-315

 (18)
 Release the DRIVE CONTROL switch to the OFF position and make sure the PDUs do not continue to turn.

 S 715-054

 (19)
 At the master cargo control panel M1, hold the DRIVE CONTROL switch to the IN position.

 S 215-316

 (20)
 Make sure the PDUs 19L1, 19L2, 19R1 and 19R2 do not operate.

 S 715-317

 (21)
 Release the DRIVE CONTROL switch to the OFF position and make sure the PDUs do not continue to turn.

 S 715-055

 (22)
 At the master cargo control panel M1, hold the DRIVE CONTROL switch to the OUT position.

 S 215-318

 (23)
 Make sure the PDUs 19L1 and 19L2 start to turn in the outboard direction and PDUs 19R1 and 19R2 do not operate.

 S 715-319

 (24)
 Release the DRIVE CONTROL switch to the OFF position and make sure the PDUs do not continue to turn.

 S 715-056

 (25)
 At the two master and remote cargo control panels M1 and M10, respectively, hold each DRIVE CONTROL switch to the OUT position.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 25-57-00
 ALL  ú ú 14A Page 524 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 215-329
 (26)
 Make sure the PDUs 19L1, 19L2, 19R1 and 19R2 start to turn in the outboard direction.

 S 715-330

 (27)
 Release the DRIVE CONTROL switches to the OFF position and make sure the PDUs do not continue to turn.

 S 715-057

 (28)
 At the local cargo control panel 19R, hold the LOCAL DRIVE switch to the FWD position.

 S 215-331

 (29)
 Make sure the PDUs 19R1 and 19R2 move clockwise from the 90-degree lateral osition to the 0-degree fore-aft position.

 S 715-332

 (30)
 Make sure PDUs 19R1, 19R2, and 20R start to turn in the forward direction after PDUs 19R1 and 19R2 reach the 0-degree fore-aft position.

 S 215-356

 (31)
 Release the LOCAL DRIVE switch to the OFF position and make sure the PDUs do not continue to turn.

 S 715-058

 (32)
 At the master and remote cargo control panels M1 and M10, respectively, hold each DRIVE CONTROL switch to the OUT position.

 S 215-333

 (33)
 Make sure the PDUs 19R1 and 19R2 move counterclockwise from the 0-degree fore-aft position to the 90-degree lateral position.

 S 215-334

 (34)
 Make sure the PDUs 19L1, 19L2, 19R1 and 19R2 start to turn in the outboard direction after PDUs 19R1 and 19R2 reach the 90-degree fore-aft position.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 25-57-00
 ALL  ú ú 14A Page 525 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 715-335
 (35)
 Release the DRIVE CONTROL switches to the OFF position and make sure the PDUs do not continue to turn.

 S 715-059

 (36)
 At the master cargo control panel, M1, hold the LOCAL DRIVE switch to the FWD position.

 S 215-336

 (37)
 Make sure the PDUs 19L1 and 19L2 move clockwise from the 90-degree lateral position to the 0-degree fore-aft position.

 S 215-337

 (38)
 Make sure PDUs 19L1, 19L2 and 20L start to turn in the forward direction after PDUs 19L1 and 19L2 reach the 0-degree fore-aft position.

 S 715-338

 (39)
 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 715-060
 (40)
 At the remote cargo control panel M10, hold the DRIVE CONTROL switch to the IN position.

 S 215-339

 (41)
 Make sure the PDUs 19L1 and 19L2 move counterclockwise from the 0-degree fore-aft position to the 90-degree lateral position.
　
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