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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
CAUTION: TO TIGHTEN THE VERTICAL TENSION BOLTS, YOU MUST USE A
_______ TORQUE WRENCH ADAPTER. WHEN YOU USE THE TORQUE WRENCH ADAPTER, YOU MUST CALCULATE THE VALUE TO SET ON THE TORQUE WRENCH. IF YOU DO NOT TIGHTEN THE VERTICAL TENSION BOLTS CORRECTLY, DAMAGE TO THE VERTICAL TENSION BOLT CAN OCCUR.
5) Get the lengths of the torque wrench and adapter and use the specified torque value for the vertical tension bolts (AMM 70-23-00/201).
6) Torque the bolts a small amount more than the run-on torque.
NOTE: Let the hoist hold and show the load while the
____ bolts keep the mount surfaces parallel to each other. The dynamometer indications should not change since the hoist holds the engine load.
7) Lift the engine a small amount while you monitor the dynamometer value. a) Initially, lift the engine 0.25 inch (6 mm). b) Tighten the bolts the same amount.
NOTE: The vertical tension bolts are a guide for
____ the mounts, but they do not hold the engine loads.
8) Continue to lift the engine until the mount surfaces are
0.000 to 0.060 inch (0.00 to 1.52 mm) apart.
9) With the torque wrench and adapter, tighten the vertical tension bolts (1 and 2) for the forward engine mounts to 4050-4950 pound-inches (458-559 newton meters).
10) With the torque wrench and adapter, tighten the vertical tension bolts (12) for the aft engine mounts to 3060-3740 pound-inches (346-423 newton meters). a) Make sure all of the threads in the nut are engaged. b) Make sure all of the chamfer on the end of the bolt
comes out of the nut.
S 094-148-N00
(6) Remove the propulsion pod overhead sling (Fig. 411B).
(a)
Adjust the sling until the suport legs are loose.
(b)
Remove the sling from the forward and aft handling adapters
(19, 14, Fig. 409).
(c)
Move the sling away from the engine and airplane and remove the sling from the crane hook.
(d)
Remove the tag lines.
(e)
Remove the dynamometer or load positioner, if installed.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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(7) Remove the forward and aft handling adapters (19, 14, Fig. 409).
TASK 71-00-02-844-001-N00
9. Put the Airplane Back to Its Usual Condition
____________________________________________
A. Special Tools and Equipment
(1)
G24006-1 Support Hook - Power Feeder Wire
Bundle
B.
Consumable Materials
(1)
D00250 Petrolatum White, VV-P-236
C.
Parts
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Bolt | 54-61-03 | 02 | 65 | | | | | | | 140 | | | 2 | Skin Assy (Mid Fairing of Core | | | | | | | Cowl Skirt) | | | | | | | Left Side | | | 130 | | | | Right Side | | | 135 | | 405 | 3 | Washer | 24-11-01 | 11 | 190 | | | 4 | Nut | | | 185 | | | 5 | Cover | | | 170 | | | 6 | Screw | | | 175 | | | 7 | Washer | | | 180 | | 406 | 1 | Packing | 73-11-02 | 05 | 10 | | | 2 | Plug | | | 5 | | 407 | 16 | Clamp | 36-11-05 | 01 | 35 | | | 17 | Seal | | | 55 | | | 18 | Seal | 30-21-06 | 01 | 10 | | | 19 | Clamp | | | 5 | | | 20 | Nut | | | 35 | | | 21 | Washer | | | 25 | | | 22 | Bolt | | | 15 | | | 23 | Washer | | | 30 | | | 24 | TAI Duct | | | 65 | | | 37 | Clamp (Coupling) | 36-11-01 | 02 | 5 | | | 38 | Seal | | | 10 | | | 39 | Start Duct | | | 15 | | | 40 | Packing | | | | | | | Inboard Struts | 28-22-07 | 15 | 143 | | | | Outboard Struts | 28-22-07 | 16 | 127 | 2.......….......…...................................…...........….....…........1
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