(d)
Install the packing (7) on the adapter (6).
(e)
Install the adapter (6) to the ferrule end of the No. 3 bearing oil pressure tube (9).
(f)
Attach the adapter (6) to the tube with bolts (5) and nuts (10). 1) Lubricate the threads of the bolts with engine oil.
(g)
Torque the nuts (10) that attach the adapter (6) to the ferrule end of the tube (9) to 36-40 pound-inches (4.067-4.519 newton meters). 1) Put lockwire or safety cable and safety cable ferrule on
the bolts (5).
(h)
Install the oil pressure trim tube assembly (16) with the steps that follow: 1) Lubricate the tube nuts with antigallant compound. 2) Install the trim tube (16) to the oil metering nipple
(restrictor).
a) Tighten the tube nut with your hand.
(i)
Connect the manifold nuts on the No. 3 bearing oil pressure manifold (12) as follows: 1) Lubricate the manifold nut threads with antigallant
compound (Fig. 403).
2) Lubricate the manifold ferrules with antigallant compound
(Fig. 403).
3) Lubricate the packing with engine oil.
4) Install the packing and retainer to the front of the
manifold.
5) Connect the front manifold nut (13) to the rear of the strainer housing on the fuel/oil cooler. a) Tighten the manifold nut with your hand.
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6) Tighten the nut on the oil pressure trim tube (16) to the
manifold tee (12) with your hand.
7) Connect the rear manifold nut (13) to the adapter in the
No. 3 bearing oil pressure tube (9).
NOTE: The rear manifold nut is at the 9 o'clock position.____
a) Tighten the manifold nut with your hand.
(j) Attach the ferrule end of the No. 3 bearing oil pressure tube
(9) to the bracket on Flange K with two bolts (11).
1) Lubricate the bolt threads with engine oil.
(k) Torque the bolts to 36-40 pound-inches (4.067-4.519 newton
meters).
(l) Adjust the forward tube clamp (14) on the oil trim pressure
tube (16) and the clamp on the No. 3 bearing oil pressure
manifold (12).
NOTE: Adjust the clamps until the center of the forward clamp____
(on the oil trim pressure tube) is 2.500-3.000 inch
(63.500 - 76.200 milimeters) from the center of the rear
clamp.
(m) Attach the clamps (14) together with a bolt (17) and nut (15).
1) Lubricate the threads of the bolt with engine oil.
2) Torque the bolt to 36-40 pound-inches (4.067-4.519 newton
meters).
CAUTION: YOU MUST USE THE WRENCHING FLATS ON THE PARTS THAT ARE
_______ CONNECTED WHEN YOU TIGHTEN MANIFOLDS AND TUBES. IF YOU DO NOT DO THIS, YOU CAN TWIST THE TUBE AND CAUSE DAMAGE TO THE TUBE.
(n) Torque the manifold nuts on the No. 3 bearing oil pressure manifold (12) as follows: 1) Torque the front manifold nut that is attached to the
strainer housing on the fuel/oil cooler to 140-160 pound-inches (15.818-18.078 newton meters). a) Loosen the same front manifold nut.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
b) Torque the front manifold nut again to the same torque value, 140-160 pound-inches (15.818-18.078 newton meters).
2) Torque the rear manifold nut to the adapter in the No. 3 bearing oil pressure tube to 675-750 pound-inches (76.265-84.739 newton meters)
3) Install lockwire or safety cable and safety cable ferrule to the manifold nuts.
(o) Torque the tube nuts on the oil trim pressure tube (16) as follows: 1) Torque the front tube nut that is attached to the manifold
tee to 675-750 pound-inches (76.265-84.739 newton meters).
2) Torque the tube nut that is attached to the oil tube metering nipple (restrictor) to 675-750 pound-inches (76.265-84.739 newton meters).
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