(i)
Connect the air signal tube to the smaller (lower) adapter on the rear of the solenoid. 1) Hold the adapter and tighten the tube nut to 270-300
pound-inches (30.5-33.9 newton-meters).
(j)
Safety the plug and the tube nuts of the supply tube and the air signal tube with lockwire or safety cable and safety cable ferrule.
(k)
Lubricate the threads of the tube nuts of the pressure switch tube as follows: 1) Lubricate the threads of the tube nut at the elbow end with
engine oil. 2) Lubricate the threads of the tube nut at the straight end with the antigalling compound.
(l)
Put the pressure switch tube in position between the pressure switch and the adapter on top of the solenoid.
(m)
Connect the tube nut on the elbow end of the pressure switch tube to the adapter on the top of the solenoid. 1) Tighten the tube nut with your hand.
(n)
Connect the tube nut on the straight end of the pressure switch tube to the pressure switch. 1) Tighten the tube nut with your hand.
(o)
Hold the adapter and tighten the tube nut at the elbow end to 90-100 pound-inches (10.2-11.3 newton-meters).
(p)
Hold the pressure switch and tighten the tube nut at the straight end to to 65-75 pound-inches (7.3-8.5 newton-meters).
(q)
Safety the cap and the two tube nuts with lockwire or safety cable and safety cable ferrule.
(r)
Remove the protective caps from the EEC electrical connectors.
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.
(s) Connect the EEC electrical connectors to the receptacles on the solenoid (AMM 70-24-05/201).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
G. Return the Aircraft to Its Usual Condition.
S 414-076-N00
(1) Install the No. 1 segment of the fan exit liner (AMM 72-34-03/401).
S 414-077-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(2)
Close the right thrust reverser (AMM 78-31-00/201).
S 414-078-N00
(3)
Close the right core cowl panel (AMM 71-11-06/201).
S 414-079-N00
(4)
Close the right fan cowl panel (AMM 71-11-04/201).
S 444-080-N00
(5)
Do the activation procedure for the thrust reverser
(AMM 78-31-00/201).
S 864-081-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) 6F16, ENG 1 PERF SOL PWR B
3) 6E15, ENG 2 PERF SOL PWR A
4) 6E16, ENG 2 PERF SOL PWR B
5) 6D15, ENG 3 PERF SOL PWR A
6) 6D16, ENG 3 PERF SOL PWR B
7) 6C15, ENG 4 PERF SOL PWR A
8) 6C16, ENG 4 PERF SOL PWR B
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S 714-082-N00
(7) Do the test for the turbine vane and blade cooling air valve and IDG air/oil heat exchanger valve override solenoid that is shown in the Power Plant Test Reference Table (AMM 71-00-00/501).
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