(c)
Put the thrust lever for the applicable engine to the full forward position.
(d)
Make sure the TRA indication, on the EICAS EPCS page, is between 84.0 and 86.0 degrees.
(e)
Put the thrust lever to the idle position.
F.
Do a Check for the Maintenance Messages.
S 815-079-N00
(1)
Do the necessary corrections for the EICAS messages shown that are related to the engine (FIM 71-EICAS Messages).
S 975-231-N00
(2)
Do a check of the CMCS EXISTING FAULTS (AMM 45-10-00/201).
S 815-104-N00
(3)
Do the necessary corrections for the CMCS messages found that are related to the engine (FIM 71-CMCS Message Index).
G.
Put the Airplane Back to Its Usual Condition.
S 865-094-N00
(1)
Put the applicable EEC MAINT ENG (1,2,3, or 4) POWER switch to the NORM position.
S 865-229-N00
(2)
If it is necessary, remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P6 Main Power Distribution Panel
1) For the applicable engine:
a) 6F13 ENG 1 T/R CONT
b) 6E13 ENG 2 T/R CONT
c) 6D13 ENG 3 T/R CONT
d) 6C13 ENG 4 T/R CONT
2) For all engines:
a) 6J18 ENG START AIR CONTROL
(b) P414 Main Power Distribution Panel
1) 414D25 ENG IDLE CONT ALT
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TEST NO. 8 - VIBRATION SURVEY
_____________________________
TASK 71-00-00-705-031-N00
10. Test No. 8 - Vibration Survey_____________________________
A. General
(1)
This is a ground test of engines during maintenance and is not for flight operation.
B.
References
(1)
AMM 31-61-00/201, Integrated Display System
(2)
AMM 71-00-00/201, Power Plant
(3)
AMM 71-FAULT CODE DIAGRAM
(4)
AMM 72-31-00/501, Low Pressure Compressor
C.
Access
(1)
Location Zones
221,222 Control Cabin
412 Engine 1
422 Engine 2
432 Engine 3
442 Engine 4
D.
Do the Vibration Survey.
S 865-082-N00
(1) For the applicable engine, make sure this circuit breaker is closed:
(a) P6 Main Power Distribution Panel
1) 6H26 VIB AMP ENG 1 & 2
2) 6H27 VIB AMP ENG 3 & 4
S 865-143-N00
WARNING:_______USE AMM 71-00-00/201 TO OPERATE THE POWER PLANT. IF YOU DO NOT USE THIS PROCEDURE, YOU CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO PERSONS.
(2) Use the Power Plant Operation (Normal) procedure to start the engine (AMM 71-00-00/201).
(a)
Let the N2 rpm become stable at idle.
(b)
Make sure the operation indications are in the operation limits.
S 865-055-N00
(3) Get access to the EICAS performance maintenance display (AMM 31-61-00/201).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TEST NO. 8 - VIBRATION SURVEY
_____________________________
S 865-056-N00
CAUTION: DO NOT MOVE THE THRUST LEVER FORWARD WHEN A POSSIBLE ENGINE
_______ STALL OCCURS. YOU MUST MOVE THE THRUST LEVER REARWARD WHEN A POSSIBLE STALL OCCURS. IF YOU MOVE THE THRUST LEVER FORWARD, DAMAGE TO THE ENGINE CAN OCCUR.
(4) If an engine stall occurs, do the steps that follow:
(a)
Quickly (1 second or less) move the thrust lever rearward to
the idle position.
(b)
Put the FUEL CONTROL switch to the CUTOFF position.
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本文链接地址：747-400 AMM 飞机维护手册 动力装置 POWER PLANT 1(64)
