S 434-011-N00

 (2)  
Put a new preformed packing, lubricated with engine oil, in the
 packing groove of the seal housing.

 (3)  
With engine oil, lubricate the carbon detail of the seal.

 S 644-012-N00
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 72-61-06
 ALL  ú ú N01 Page 405 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 424-013-N00
 (4)  
Install the seal in the fuel pump pad on the end of the gear shaft, against the shoulder of the gear shaft.

 S 434-014-N00

 (5)  
Install the retaining ring in the groove in the gearbox housing to attach the seal.

 S 414-015-N00

 (6)  
Install the fuel pump and the fuel metering unit (AMM 73-11-01/401).

 F.
Put the Airplane Back to its Usual Condition.

 S 414-029-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU CLOSE THE THRUST
_______ REVERSER. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Close the right thrust reverser (AMM 78-31-00/201).

 S 414-030-N00

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

 S 414-031-N00

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

 S 444-032-N00

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

 S 794-017-N00

 (5)  
Do the test for the accessory drive seals that is shown in the Power Plant Test Reference Table (AMM 71-00-00/501).

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 ALL  ú ú N01 Page 406 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
HYDRAULIC PUMP DRIVE OIL SEAL - REMOVAL/INSTALLATION
____________________________________________________
 1.  General
_______
 A.  This procedure gives the steps to remove and install the oil seal for the hydraulic pump drive. In this procedure, the oil seal for the hydraulic pump drive is referred to as the EDP (engine-driven pump) oil seal.
 B.  The EDP oil seal is found on the aft side of the main gearbox at the 4 o'clock position.
 C.  You must open the right thrust reverser half and remove the EDP to get access to the EDP oil seal.
 TASK 72-61-07-004-001-N00
 2.  Remove the Hydraulic Pump Drive Oil Seal
________________________________________
 A.  Special Tools and Equipment
 (1)  
Puller - PWA 85204 (optional to PWA 88110), Pratt & Whitney, Commercial Products Division, 400 Main Street, East Hartford, CT 06108

 (2)
Puller - PWA 88110

 B.  
References

 (1)
AMM 29-11-05/401, Engine-Driven Pump

 (2)
AMM 71-11-04/201, Fan Cowl Panels

 (3)
AMM 71-11-06/201, Core Cowl Panels

 (4)
AMM 78-31-00/201, Thrust Reverser System

 (5)
IPC 72-61-07 Fig. 1

 C.  
Access

 (1)  
Location Zone
 412 Engine No. 1
 422 Engine No. 2
 432 Engine No. 3
 442 Engine No. 4

 (2)  
Access Panel 416 Right Thrust Reverser Half - Engine No. 1 426 Right Thrust Reverser Half - Engine No. 2 436 Right Thrust Reverser Half - Engine No. 3 446 Right Thrust Reverser Half - Engine No. 4

 D.  
Procedure

 (1)
Open the right fan cowl panel (AMM 71-11-04/201).

 S 014-027-N00
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