B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 71-11-04/201, Fan Cowl Panels
(4)
AMM 78-31-00/201, Thrust Reverser System
(5)
AMM 78-34-13/401, Thrust Reverser Sync Locks
(6)
WDM 78-34-11, Thrust Reverser Control
(7)
WDM 78-34-21, Thrust Reverser Control
(8)
WDM 78-34-31, Thrust Reverser Control
(9)
WDM 78-34-41, Thrust Reverser Control
C.
Access
(1)
Location Zones
211 Flight Compartment
212 Flight Compartment
410 No. 1 Power Plant
420 No. 2 Power Plant
430 No. 3 Power Plant
440 No. 4 Power Plant
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
78-34-13
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(2)
Access Panels
413 and 414 Fan Cowl Panels - Engine 1
423 and 424 Fan Cowl Panels - Engine 2
433 and 434 Fan Cowl Panels - Engine 3
443 and 444 Fan Cowl Panels - Engine 4
(3)
These conditions are necessary for this task:
(a)
Electrical power on (AMM 24-22-00/201).
(b)
Integrated Display System (IDS), serviceable (AMM 31-61-00/501).
(c)
Any other system that you need to perform the task.
(d)
Airplane must be in the Ground Mode (AMM 32-09-02/201).
D.
Prepare to Do the Integrity Test for the Sync Locks.
S 865-002-N00
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-003-N00
(2)
For the applicable engine, make sure these circuit breakers are closed:
(a) On the Main Power Distribution Panel, P6:
1) 6F12 ENG 1 T/R IND
2) 6E12 ENG 2 T/R IND
3) 6D12 ENG 3 T/R IND
4) 6C12 ENG 4 T/R IND
5) 6F13 ENG 1 T/R CONT
6) 6E13 ENG 2 T/R CONT
7) 6D13 ENG 3 T/R CONT
8) 6C13 ENG 4 T/R CONT
9) 6F11 ENG 1 T/R LOCK CONT
10) 6E11 ENG 2 T/R LOCK CONT
11) 6D11 ENG 3 T/R LOCK CONT
12) 6C11 ENG 4 T/R LOCK CONT
S 015-004-N00
(3)
Open the fan cowl panels for the applicable engine
(AMM 71-11-04/201).
E.
Do the Electrical Integrity Test for the Sync Locks.
S 845-005-N00
(1) Do these steps, for the applicable engine, to make sure there are no "hot" short circuits in the electrical system which can accidentally supply power to the sync locks:
(a) Remove the electrical connector, D20194, from the sync lock on the left sleeve of the thrust reverser.
NOTE: Connector D20194 = DV170 (WDM 78-34-13, WDM 78-34-23,
____ WDM 78-34-33, WDM 78-34-43).
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(b) Remove the electrical connector, D20196, from the sync lock on the right sleeve of the thrust reverser.
NOTE: Connector D20196 = DV171 (WDM 78-34-13, WDM 76-34-23,
____ WDM 78-34-33, WDM 78-34-43).
(c) Use a multi-meter on the plug end of the applicable electrical connector to make sure that these conditions are correct:
NOTE: Electrical connectors D20194 = DV170 and D20196 = DV171
____ (WDM 78-34-13, WDM 78-34-23, WDM 78-34-33 and WDM 78-34-43).
~.................................................................... | FROM EQUIPMENT | TO EQUIPMENT | CONDITION | ...................................................................... | D20194 PIN 1 | D20194 PIN 2 | -3 TO +1 VDC AND | | | | CONTINUITY (LESS | | | | THAN 5 OHMS) | ...................................................................... | D20196 PIN 1 | D20196 PIN 2 | -3 TO +1 VDC AND | | | | CONTINUITY (LESS | | | | THAN 5 OHMS) | 2....................…......................…........................1
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