(6)  
IPC 79-32-01 Fig. 1

 (7)  
WDM 79-32-11

 (8)  
WDM 79-32-12

 (9)  
SSM 79-00-01

 D.
Access

 (1)  
Location Zone
 412 Engine 1 - Fwd HPC Case 10:00 o'clock
 422 Engine 2 - Fwd HPC Case 10:00 o'clock
 432 Engine 3 - Fwd HPC Case 10:00 o'clock
 442 Engine 4 - Fwd HPC Case 10:00 o'clock

 (2)  
Access Panel
 415 Left Thrust Reverser Half - Engine 1
 425 Left Thrust Reverser Half - Engine 2
 435 Left Thrust Reverser Half - Engine 3
 445 Left Thrust Reverser Half - Engine 4

 E.
Procedure

 (1)  
Remove the protection caps.

 S 424-011-N00

 (2)  
Put the oil pressure transmitter to the bracket with the electrical connector receptacle in the direction shown in Section B-B.

 (a)  
Tighten the locknut.

 (b)  
Install the lockwire to the locknut.

 S 434-010-N00
 S 644-023-N00
 (3)  
Lubricate the O-ring for the elbow of the oil pressure tube with engine oil.

 (4)  
Install the O-ring to the elbow of the oil pressure tube.

 S 434-012-N00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 434-024-N00
 (5)  Connect the oil pressure tube to the oil pressure transmitter.
 (a)  Tighten the tube nut.
 S 644-025-N00
 (6)  
Lubricate the O-rings for the vent tube elbow with engine oil.

 S 434-013-N00

 (7)  
Install the O-rings to the vent tube elbow.

 S 434-029-N00

 (8)  
Connect the vent tube elbow to the oil pressure transmitter and the
 vent tube tee.

 (a)  Tighten the coupling nuts for the elbows.
 S 434-014-N00
 (9)  
Connect the electrical connector (DT679) to the oil pressure
 transmitter.

 S 764-015-N00

 (10)
 Examine the bonding resistance between the oil pressure transmitter
 and bracket (AMM 20-22-01/601).

 (a) Make sure the bonding resistance is not more than 0.01 ohms.

 F.
Put the Airplane Back to Its Usual Condition.

 S 414-032-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.

 (1)  
Close the left thrust reverser (AMM 78-31-00/201).

 S 414-026-N00

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

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

 S 444-028-N00

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

 S 864-017-N00

 (5)  
For the applicable engine, close this circuit breaker and remove the DO-NOT-CLOSE tag:

 S 414-027-N00
 (a)  P6 Main Power Distribution Panel
 1) 6D1 OIL PRESS ENG 1
 2) 6D2 OIL PRESS ENG 2
 3) 6D3 OIL PRESS ENG 3

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 ALL  ú ú N01 Page 407 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
4)  6D4 OIL PRESS ENG 4
 (6)  S 714-018-N00Do the operational test for the oil pressure indicating system (AMM 79-32-00/501).
 (7)  S 794-019-N00Examine the tube connections on the warning switch for signs of oil leakage after the engine shutdown.

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