S 434-037-N00

 (4)  
Install the packing (12) to the lower oil pressure tube for the No. 4 bearing.

 S 434-038-N00

 (5)  
Install the elbow at the top of the oil pressure tube (6) to the tube nut (7) for the internal tube on the turbine exhaust case at the 10:30 o'clock position.

 (a)  
Tighten the elbow with your hand.

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S 644-063-N00
 (6)  
Lubricate the threads of the bolts (8) with engine oil.

 S 434-039-N00

 (7)  
Attach the top of the oil pressure tube (6) with the bolts (8) and nuts (10).

 (a)  Tighten the nuts (10) to 36-40 pound-inches (4.1-4.5 newton-meters).
 S 434-040-N00
 (8)  Tighten the tube nut (7) for the internal tube to 270-300
 pound-inches (30.5-33.9 newton-meters).

 (a)  Install the lockwire or safety cable and safety cable ferrule to the tube nut (7).
 S 414-041-N00
 (9)  
Install the heat shield (11) to the inboard side of the connection for the oil pressure tube (6) with the hose clamps (9).

 (a)  Tighten the hose clamps (9) to 15-18 pound-inches (1.7-2.0 newton-meters).

 F.
Put the Airplane Back to Its Usual Condition.

 S 414-069-N00
 WARNING: OBEY THE INSTRUCTIONS IN 78-31-00 WHEN YOU CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Close the left thrust reverser (Ref 78-31-00/201).

 S 414-064-N00

 (2)  
Close the left core cowl panel (Ref 71-11-06/201).

 (3)  
Close the left fan cowl panel (Ref 71-11-04/201).

 S 444-066-N00

 (4)  
Do the activation procedure for the thrust reverser
 (Ref 78-31-00/201).

 S 414-065-N00
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 794-043-N00
 (5) Do the Test No. 3 - Ground Test - Idle Power (Ref 71-00-00/501).
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LAST CHANCE OIL STRAINER - INSPECTION/CHECK
___________________________________________
 1.  General
_______
 A.  This procedure gives the instructions necessary to examine the last chance oil strainers for contamination.
 B.  You can get access to the last chance oil strainers through the left thrust reverser.
 TASK 79-21-16-206-001-N00
 2.  Do a Check of the Last Chance Oil Strainers (Fig. 601)
___________________________________________
 A.  Consumable Materials
 (1)
G00000 Strainer - Paper

 B.  
References

 (1)
72-00-00/601, Engine

 (2)
79-21-16/701, Last Chance Oil Strainer

 (3)
IPC 79-21-02 Fig. 20

 (4)
IPC 79-21-51 Fig. 5

 C.  
Access

 (1)
Location Zone

 412 Engine 1 - Intermediate Case 9 o'clock
 HPC Case 9 o'clock
 Turbine Exhaust Case 10:30 o'clock
 422 Engine 2 - Intermediate Case 9 o'clock
 HPC Case 9 o'clock
 Turbine Exhaust Case 10:30 o'clock
 432 Engine 3 - Intermediate Case 9 o'clock
 HPC Case 9 o'clock
 Turbine Exhaust Case 10:30 o'clock
 442  Engine 4 - Intermediate Case 9 o'clock HPC Case 9 o'clock Turbine Exhaust Case 10:30 o'clock
　
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