(i)
With the PWA 85273 Drift and an arbor press, push the gearshaft out of the upper bearing.
(j)
Remove the bearing inner race and rollers from the gearshaft.
(k)
Remove the bearing outer race from the housing.
(l)
Put the bearing in a container with a label.
(m)
Carefully remove the housing from the gearshaft.
(n)
Make sure that the gearshaft and inner race does not suddenly fall out of the bearing outer race.
(o)
Remove the gearshaft and bearing inner race from the base.
(p)
Remove the bearing spacer from the gearshaft.
CAUTION: MAKE SURE YOU KEEP THE DETAILS OF THE BEARINGS ASSEMBLY
_______ TOGETHER. IT IS NOT EASY TO ASSEMBLE THE DETAILS OF THE BEARINGS ASSEMBLY.
(q)
Put the halves of the PWA 85274 Plate under the bearing inner race and rollers.
(r)
Put the gearshaft, with the gear end down, into the PWA 12126 Base.
(s)
With the PWA 85723 Drift and an arbor press, push the gearshaft out of the lower inner race and rollers.
(t)
Remove the two bolts that attach the bearing outer race to the gearshaft housing.
(u)
Remove the bearing outer race.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(v)
Remove the lockwire, the plug, and the insert from the hole at the bottom of the housing.
(w)
Discard the two packings.
TASK 72-61-14-404-011-N00
3. EEC Alternator Drive Gearshaft and Bearings Assembly - Assembly and___________________________________________________________________ Installation (Fig. 401)____________
A. Equipment
(1)
Gage - Force, PWA 80130, Pratt & Whitney Aircraft, East Hartford, Connecticut
(2)
M303, M305 or M307 Bergen Mechanical Crimper
Bergen Cable Technologies Inc
170 Gregg St
P.
O. Box 1300
Lodi, NJ 07644-9982
(3)
Base - PWA 85267 (optional to PWA 88683)
(4)
Drift - Assemnbly, PWA 85348
(5)
Drift - Hand, PWA 86087
(6)
Base - PWA 88683
B.
Consumable Materials
(1)
D00226 Oil - engine (PWA 521B)
(2)
G02334 Lockwire, (P05-289) 0.032 inch (0.813 mm) - AS3214-02
(3)
G02332 Ferrule, Safety Cable (P05-292)
(4)
G02335 Cable, Safety (P05-291)
C.
References
(1)
AMM 71-11-04/201, Fan Cowl Panels
(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
AMM 72-61-05/401, EEC Alternator Drive Oil Seal
(4)
AMM 73-21-05/401, EEC Alternator
(5)
AMM 78-31-00/201, Thrust Reverser System
D.
Access
(1)
Location Zones
211 Flight Compartment
212 Flight Compartment
410 Left Engine
420 Right Engine
(2)
Access Panels
413AL/414AR Fan Cowl Panel, Left Engine
415AL/416AR Fan Reverser, Left Engine
417AL/418AR Core Cowl, Left Engine
423AL/424AR Fan Cowl Panel, Right Engine
425AL/426AR Fan Reverser, Right Engine
427AL/428AR Core Cowl, Right Engine
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-61-14
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E. Procedure
S 434-012-N00
(1)
Do the steps that follow to assemble the EEC alternator drive
gearshaft and bearings assembly (Fig. 401).
(a)
Increase the temperature of the two bearing inner race and rollers in an oil bath.
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本文链接地址：747-400 AMM 飞机维护手册 发动机 ENGINE 2(165)
