(a)
P6 Main Power Distribution Panel
1) 6H32, ENG 1 AIR SUPPLY CONT
2) 6H33, ENG 2 AIR SUPPLY CONT
3) 6H34, ENG 3 AIR SUPPLY CONT
4) 6H35, ENG 4 AIR SUPPLY CONT
S 014-006
(5)
Open the applicable access door for the air conditioning bay (AMM 06-09-03/201):
(a)
191-NL to get access to the left duct pressure transmitter.
1) The transmitter is installed above the forward left corner of the door.
(b)
192-NR to get access to the right duct pressure transmitter.
1) The transmitter is installed approximately two feet aft of the aft right corner of the door.
D. Remove the Pressure Transmitter
S 034-007
(1)
Disconnect the electrical connector from the pressure transmitter.
S 034-008
(2)
Disconnect the sense hose from the pressure transmitter.
(a)
Put a cap on the open sense hose to keep out unwanted objects.
S 034-025
(3)
Remove the four screws and washers from the pressure transmitter.
S 024-026
(4)
Remove the pressure transmitter.
TASK 36-21-01-404-010
3. Install the Duct Pressure Transmitter (Fig. 401)_____________________________________
A. Consumable Materials
(1)
G00095 Detector - Leak, Leak-Tex (160X)
(2)
D00062 Lubricant - Pneumatic System Thread, FS 1292 (Fluor-Silicone) MIL-G-4343
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 36-00-00/201, Pneumatic System
(3)
AMM 06-09-03/201, Body Section 44 Access Doors and Panels
(4)
IPC 36-21-00, Fig. 1
C.
Access
(1)
Location Zone 191 Left Pressure Transmitter - Fairing, Wing-To-Body, Forward Lower Half, Left
192 Right Pressure Transmitter - Fairing, Wing-To-Body, Forward Lower Half, Right
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36-21-01
ALL ú ú 01 Page 403 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(2) Access Panel 191-NL Door - Access, Air Conditioning - Left Pressure Transmitter
192-NR Door - Access, Air Conditioning - Right Pressure Transmitter
D. Install the Duct Pressure Transmitter
S 434-011
(1)
Lubricate the new O-ring.
(a)
Install the O-ring on the pressure transmitter.
S 424-012
(2) Use the four washers and screws to install the pressure transmitter.
NOTE: The screws go in the nutplates.
____
S 434-013
(3)
Remove the cap from the sense hose.
S 434-014
(4)
Connect the sense hose to the pressure transmitter.
S 434-015
(5)
Connect the electrical connector to the pressure transmitter.
S 864-060
(6)
Remove the DO-NOT-CLOSE tag and close these circuit breakers.
(a)
P6 Main Power Distribution Panel
1) 6H32, ENG 1 AIR SUPPLY CONT
2) 6H33, ENG 2 AIR SUPPLY CONT
3) 6H34, ENG 3 AIR SUPPLY CONT
4) 6H35, ENG 4 AIR SUPPLY CONT
S 714-017
(7)
Look at the EICAS MAINT PAGE for the 21 ECS.
(a)
Make sure the applicable DUCT PRESSURE is approximately zero.
(8)
Apply the leak detector to the connection for the sense hose.
(9)
Pressurize the pneumatic system (AMM 36-00-00/201).
S 794-018
S 864-019
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36-21-01 中國(guó)航空網(wǎng) m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 氣動(dòng)系統(tǒng) PNEUMATIC SYSTEM(160)
