(b)
HOLD-OPEN RODS WITH THE LOCK SLEEVE AND BALL LOCKPIN; Do these steps: 1) Make sure you cannot see the red band (with the word
UNLOCKED on it) on the hold-open rod. 2) Make sure the ball lockpin is installed through the hold-open rod.
(c)
HOLD-OPEN RODS WITH THE LOCK SLEEVE AND SECONDARY LOCK; Do these steps: 1) Make sure you cannot see the red band (with the word
UNLOCKED on it) on the hold-open rod. 2) Make sure the secondary lock is engaged in the slot of the hold-open rod.
S 012-052-N00
(18) Lower the hoist a very small distance to put some of the thrust reverser weight on the hold-open rod.
NOTE:____Keep the cable on the hoist tight. DO NOT remove the sling equipment or the hoist until you complete the maintenance and close the thrust reverser.
S 012-053-N00
(19) If necessary, do the steps (above) again to open the opposite thrust reverser half.
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TASK 78-31-00-412-054-N00
5. Thrust Reverser Closing (Sling Procedure)
_________________________________________
A. General
(1)
You must not extend or lift the thrust reverser if more than six cascade vane segments are removed. You must install a minimum of three cascade vane segments in each thrust reverser half. The empty space between these three cascade vane segments must be equivalent. There must not be more than two adjacent empty spaces between the three cascade vane segments which are installed.
(2)
Hold each thrust reverser half in the open position with a minimum of two devices at all times. For this procedure, hold each thrust reverser half up with the sling hoist and the hold-open rod at the same time.
(a) The center-locking hydraulic actuator is referred to as the center-locking actuator in this procedure.
B.
Special Tools and Equipment
(1)
A71002-48 - Sling, Thrust Reverser
C.
References
(1)
AMM 27-62-00/201, Speed Brake Control System
(2)
AMM 27-81-00/201, Leading Edge Flap Systems
(3)
AMM 71-11-04/401, Fan Cowl Panels
(4)
AMM 71-11-06/201, Core Cowl Panels
D.
Access
(1)
Location Zones 415 and 416 Engine 1 - Thrust Reverser Halves 425 and 426 Engine 2 - Thrust Reverser Halves 435 and 436 Engine 3 - Thrust Reverser Halves 445 and 446 Engine 4 - Thrust Reverser Halves
(2)
Access Panels
413 and 414 Fan Cowl Panels - Engine 1
417 and 418 Core Cowl Panels - Engine 1
423 and 424 Fan Cowl Panels - Engine 2
427 and 428 Core Cowl Panels - Engine 2
433 and 434 Fan Cowl Panels - Engine 3
437 and 438 Core Cowl Panels - Engine 3
443 and 444 Fan Cowl Panels - Engine 4
447 and 448 Core Cowl Panels - Engine 4
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
E. Prepare to Close the Thrust Reverser With the Sling Equipment
(1) S 042-055-N00For safety, make sure the applicable airplane systems continue to be set in the deactivated configuration.
NOTE:____ The deactivated configuration for each applicable system can be found in this task: Prepare to Open the Thrust Reverser With the Sling Equipment (which is at the start of the task before this one) (AMM 78-31-00/201).
F. Close the Thrust Reverser with the Sling Equipment (Fig. 204).
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