(c)
Make sure the dual barrel nuts in the rear of the top engine mounts are free from damage.
(d)
Replace all the damaged barrel nuts.
(e)
Make sure the part of the forward mount brackets that you can see are solid and are in good condition.
(f)
Look for damage at the areas where the forward mount brackets attach (Fig. 602).
S 426-006-N00
(4) Install the power plant (AMM 71-00-02/401).
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SEE A
PUCK
MOUNT BRACKETS
FWD
INTERMEDIATE CASE
A L-A0701
Front Mount BracketsFigure 602
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FORWARD LOWER ENGINE MOUNT - REMOVAL/INSTALLATION
_________________________________________________
1. General
_______
A. This procedure gives the instruction for the removal and installation of the forward lower engine mount.
B. The engine mount is attached to the engine case flange by a bearing housing and two thrust links.
C. You can get an access to the engine mount after you remove the engine.
TASK 71-21-01-004-001-N00
2. Remove the Forward Lower Engine Mount (Fig. 401)
_____________________________________
A. References
(1)
AMM 71-00-02/401, Power Plant
(2)
IPC 71-21-01 Fig. 1
B.
Access
(1)
Location Zone
412 Engine 1
422 Engine 2
432 Engine 3
442 Engine 4
C.
Procedure
S 014-002-N00
(1)
Remove the power plant (AMM 71-00-02/401).
S 034-003-N00
(2)
Remove bolts (7), washers (5 and 6), and nuts (4) from the thrust link and the engine case flange.
S 034-004-N00
(3)
Remove the bolts (2) and washers (1) from the bearing housing and the engine case flange.
(4)
Remove the engine mount (3) from the engine.
S 024-010-N00
TASK 71-21-01-404-005-N00
3. Install the Forward Lower Engine Mount (Fig. 401)
______________________________________
A. Consumable Materials
(1) A00779 Sealant - BMS 5-26 Type II
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A
BEARING
HOUSING
SEE B
1. WASHER
(4 LOCATIONS)
ENGINE CASE
FLANGE 2. BOLT
(4 LOCATIONS)
7. BOLT
(2 LOCATIONS) 3. FORWARD LOWER
ENGINE MOUNT
6. WASHER THRUST LINK
(2 LOCATIONS) (2 LOCATIONS)
4. NUT
(2 LOCATIONS)
(2 LOCATIONS) 5. WASHER PIN 8. COTTER FWD
A
Forward Lower Engine Mount Installation
Figure 401 (Sheet 1)
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BEARING
HOUSING
BEARING HOUSING
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 动力装置 POWER PLANT 2(96)
