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 77-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 436-016-N00
 (14) Connect the electrical connector for the applicable engine.
 ~........................ | ENGINE | CONNECTOR | .......................... | 1 | DW1166A | .......................... | 2 | DW1166D | .......................... | 3 | DW2138C | .......................... | 4 | DW2130C | 2...........…............1
 S 766-017-N00
 (15)
 Make sure there is more than 100K ohms of resistance between the casing of the connector, DT677, and the electrical ground.

 S 436-018-N00

 (16)
 Connect the electrical connector, DT677.

 S 416-019-N00

 (17)
 Close the right fan cowl panel (AMM 71-11-04/201).

 S 866-021-N00

 (18)
 For the applicable engine, remove the DO-NOT-CLOSE tag and close this circuit breaker:

 (a)  P6 Main Power Distribution Panel
 1) 6H26 ENG 1 & 2 VIB AMP
 2) 6H27 ENG 3 & 4 VIB AMP

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
ENGINE ACCELEROMETER - REMOVAL/INSTALLATION
___________________________________________
 1.  General
_______
 A.  This procedure has two tasks. One task is the removal of the engine accelerometer (T677). The other task is the installation of the engine accelerometer.
 B.  The engine accelerometer is installed on the engine fan case at approximately the 1 o'clock position. It is on the aft side of the engine flange A.
 C.  Open the right fan cowl panel to get access to the engine accelerometer.
 TASK 77-31-01-004-001-N00
 2.  Engine Accelerometer Removal (Fig. 401)
____________________________
 A.  References
 (1)  
AMM 71-11-04/201, Fan Cowl Panels

 (2)  
IPC 77-31-01 Fig. 5

 (3)  
WDM 77-31-11, 77-31-12

 (4)  
SSM 77-31-01

 B.  
Access

 (1)  
Location Zone
 412 Engine 1 - Fan Case 1 o'clock
 422 Engine 2 - Fan Case 1 o'clock
 432 Engine 3 - Fan Case 1 o'clock
 442 Engine 4 - Fan Case 1 o'clock

 (2)  
Access Panel
 414 Right Fan Cowl Panel - Engine 1
 424 Right Fan Cowl Panel - Engine 2
 434 Right Fan Cowl Panel - Engine 3
 444 Right Fan Cowl Panel - Engine 4

 C.  
Procedure

 S 864-002-N00
 (1)  
For the applicable engine, open this circuit breaker and attach a DO-NOT-CLOSE tag:

 (a)  P6 Main Power Distribution Panel
 1) 6H26 VIB AMP ENG 1&2
 2) 6H27 VIB AMP ENG 3&4

 (2)  
Open the right fan cowl panel (AMM 71-11-04/201).

 S 014-003-N00
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 ALL  ú ú N01 Page 401 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A
INLET COWL 
ENGINE 
FLANGE A 
ENGINE 
ACCELEROMETER 
(T677) 
SCREW 
(3 PLACES) 
MOUNTING PAD 
FAN CASE 

A  (DT677) CONNECTOR ELECTRICAL  FWD 
Engine Accelerometer Installation Figure 401 

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