(d)
Attach the solenoid and the bracket to the intermediate case with the bolts. 1) Tighten the bolts to 85-95 pound-inches (9.6-10.7
newton-meters).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(e)
If it was necessary to loosen the bolt and nut which attach the accessory cooling tube to the bracket, tighten the bolt to 36-40 pound-inches (4.1-4.5 newton-meters).
(f)
Lubricate the threads of the center adapter with the antigalling compound.
(g)
Connect the 15th-stage air supply tube to the center adapter.
1) Hold the adapter and tighten the tube nut to 225-250 pound-inches (25.4-28.2 newton-meters).
(h)
Lubricate the threads of the two remaining adapters on the solenoid with engine oil.
(i)
Connect the two signal tubes to the adapters.
1) Hold the adapters and tighten the tube nuts to 270-300 pound-inches (30.5-33.9 newton-meters).
(j)
Safety the three tube nuts with lockwire or safety cable and safety cable ferrule.
(k)
Remove the protection caps from the EEC electrical connector and the receptacle on the solenoid.
CAUTION: USE THE CORRECT ASSEMBLY PROCEDURE, AND TOOLS, FOR THE
_______ HARNESS CONNECTOR INSTALLATION (AMM 70-24-05/201). IF YOU USE THE INCORRECT ASSEMBLY PROCEDURE, OR TOOLS, A DAMAGED OR LOOSE CONNECTOR CAN OCCUR. A LOOSE CONNECTOR PERMITS VIBRATION, WHICH CAUSES THE CONTACTS TO WEAR AND DECREASES THE LIGHTNING PROTECTION.
(l)
Connect the EEC electrical connector to the receptacle on the solenoid (AMM 70-24-05/201).
G.
Return the Aircraft to Its Usual Condition
S 414-025-N00
(1) Install the No. 7 segment of the fan exit liner (AMM 72-34-03/401).
S 414-026-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(2) Close the left thrust reverser (AMM 78-31-00/201).
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S 414-027-N00
(3) Close the left core cowl panel (AMM 71-11-06/201).
S 414-028-N00
(4) Close the left fan cowl panel (AMM 71-11-04/201).
S 444-029-N00
(5) Do the activation procedure for the thrust reverser (AMM 78-31-00/201).
S 864-030-N00
(6) For the applicable engine, remove the DO-NOT-CLOSE tag and close this circuit breaker as follows:
(a) P6 Main Power Distribution Panel 1) 6F15 ENG 1 PERF SOL PWR A 2) 6F15 ENG 1 PERF SOL PWR A 3) 6F16 ENG 1 PERF SOL PWR B 4) 6E15 ENG 2 PERF SOL PWR A 5) 6E16 ENG 2 PERF SOL PWR B 6) 6D15 ENG 3 PERF SOL PWR A 7) 6D16 ENG 3 PERF SOL PWR B 8) 6C15 ENG 4 PERF SOL PWR A 9) 6C16 ENG 4 PERF SOL PWR B
S 714-031-N00
(7) Do the test for the turbine cooling air valve and turbine vane and blade cooling air valve solenoid that is shown in the Power Plant Test Reference Table (AMM 71-00-00/501).
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COMPRESSOR STATOR VANE CONTROL SYSTEM - DESCRIPTION AND OPERATION
_________________________________________________________________
1. General
_______
A. The compressor stator vane control system provides optimum compressor performance and prevents compressor surge by controlling high pressure compressor (HPC) forward vane positions and varying HPC airflow.
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本文链接地址：747-400 AMM 飞机维护手册 大气 AIR 2(19)
