(e)  
Tighten the rear tube nut to 140-160 pound-inches (15.8-18.1 newton-meters), then loosen and retighten to the same value. 1) Attach lockwire or safety cable and safety cable ferrule.

 S 434-018-N00
 (3)  
Connect and tighten the gearbox oil pressure manifold (4) to 675-750 pound-inches (76.3-84.7 newton-meters).

 (a)  Attach lockwire or safety cable and safety cable ferrule.

 (4)  
Install the No. 3 bearing oil pressure manifold (1):

 S 434-019-N00
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 79-21-17
 ALL  ú ú N03 Page 409 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
CAUTION:_______ YOU MUST DO THIS PROCEDURE AS FOLLOWS.  IF YOU DO NOT DO
 THESE INSTRUCTIONS ACCURATELY, YOU CAN CAUSE DAMAGE TO THE
 TUBE.
 CAUTION:_______ YOU MUST USE THE WRENCHING FLATS ON THE MATING PARTS WHEN
 YOU TIGHTEN THE TUBE NUTS.  IF YOU DO NOT DO THIS, YOU CAN

 TWIST THE TUBE AND CAUSE DAMAGE TO THE TUBE.
 (a)  
ENGINES WITHOUT PW SB 79-52; Loosen the clamp bolt (20) that attaches the No. 3 bearing oil tube (15) to the Flange K bracket (16).

 (b)  
ENGINES WITH PW SB 79-52; Loosen the clamp bolts that attach the ferrule end of the No. 3 bearing oil pressure tube (15) to the Flange K bracket.

 (c)  
Loosen the three bolts that attach the oil trim pressure tube

 (3) to the the main oil filter housing.

 (d)  
ENGINES WITHOUT PW SB 79-52; Do the steps that follow: 1) Lubricate the back of the No. 3 bearing oil pressure

 manifold ferrules with Antigalling Compound (Fig. 402).
 2)  Lubricate the forward tube nut threads with Antigalling Compound (PWA 550).
 3)  Lubricate the rear tube nut threads with Antigalling
 Compound (PWA 586). 4) Lubricate the packing with Engine Oil. 5) Install the packing and retainer to the tube.
 (e)  ENGINES WITH PW SB 79-52; Do the steps that follow: 1) Lubricate the back of the No. 3 bearing oil pressure
 manifold ferrules and the manifold nut threads with
 Antigallant Compound (PWA 550) (See Figure 402).
 2)  Lubricate the packing with Engine Oil.
 3)  Install the packing and retainer to the No. 3 bearing oil
 pressure manifold (1).
 (f)  
Install the No. 3 bearing oil pressure manifold (1) to the strainer housings (5, 10) and tighten by hand.

 (g)  
Lubricate the threads of the oil tube metering nipple (2) with Antigallant Compound (PWA 550).

 (h)  
Lubricate the back of the ferrules on the oil trim pressure tubes with Antigallant Compound (Fig. 402).

 (i)  
Install the oil tube metering nipple (2) to the two oil trim pressure tubes (3) and tighten by hand.

 (j)  
Lubricate the clamp bolts with Engine Oil and install the hardware which attaches the No. 3 bearing oil pressure manifold

 (1) and the oil trim pressure tube (3).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 79-21-17
 ALL  ú ú N03 Page 410 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.

L-A7238LUBRICATE WITH ANTIGALLANT COMPOND (PWA 36035)
ENGINES WITHOUT PW SB 79-52
LUBRICATE WITH
ANTIGALLANT
COMPOND (PWA 550)

LUBRICATE WITH
LUBRICATE WITH  LUBRICATE WITHANTIGALLANT
ANTIGALLANT  ANTIGALLANTCOMPOND (PWA 550)
COMPOND (PWA 550)  COMPOND (PWA 550)(OPTIONAL AND MAY
(OPTIONAL AND MAY  (OPTIONAL AND MAYBE INCOMPLETE) BE INCOMPLETE)
LUBRICATE WITH ANTIGALLANT COMPOND (PWA 550)
LUBRICATE WITH
ANTIGALLANT
ANTIGALLANTCOMPOND (PWA 550)LUBRICATE WITH COMPOND (PWA 550)
NO. 3 BEARING OIL  (OPTIONAL AND MAY
ANTIGALLANT (OPTIONAL AND MAY
PRESSURE MANIFOLD  BE INCOMPLETE)
COMPOND (PWA 550)

LUBRICATE WITH BE INCOMPLETE)
ANTIGALLANT
COMPOND (PWA 550)

ENGINES WITH PW SB 79-52
L-A8055 (0000)
　
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