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A
747-400 MAINTENANCE MANUAL
D. Remove the Aspirator
S 034-017
(1)
Cut and remove the lockwires from the water inlet hose and the air inlet tube.
S 034-004
(2)
Disconnect the water inlet hose from the aspirator.
S 034-013
(3)
Disconnect the air inlet tube from the aspirator.
S 034-005
(4)
Remove the bulkhead nut from the header boss.
S 024-014
(5)
Remove the aspirator.
S 034-006
(6)
Remove the bushing, nozzle, and O-rings from the aspirator air inlet.
TASK 21-51-11-404-007
3. Water Aspirator Installation (Fig. 401)
____________________________
A. References
(1)
06-09-03/201, Body Section 44 Access Doors and Panels
(2)
20-11-28/401, Lockwire
(3)
21-51-11/501, Water Aspirator
(4)
IPC 21-51-60 Fig. 1, 2 and 3
B. Access
(1)
Location Zone
133 Air Conditioning Equipment Bay, LH
134 Air Conditioning Equipment Bay, RH
(2)
Access Panel
191E-L Air Conditioning Access Panel
191N-L Air Conditioning Access Panel
192E-R Air Conditioning Access Panel
C. Install the Aspirator
S 434-008
(1)
Install the bushing, nozzle, and O-ring to the aspirator air inlet.
(2)
Install the O-ring and the backup ring on the aspirator outlet.
S 424-010
(3)
Install the aspirator in the header boss.
(a)
Put the aspirator in the header boss.
(b)
Align the aspirator with the water inlet hose.
S 434-009
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747-400 MAINTENANCE MANUAL
(c) Tighten the bulkhead nut to hold the aspirator to the header boss.
S 434-011
(4) Connect the air inlet tube to the aspirator.
(a) Install a lockwire on the air inlet tube (Ref 20-11-28/401).
S 434-018
(5) Connect the water inlet hose to the aspirator.
(a) Install a lockwire on the water inlet hose (Ref 20-11-28/401).
D. Put the airplane to its usual condition
S 414-016
(1) Close or install the applicable access door or panel
(Ref 06-09-03/201):
-191E-L for pack 1 (access panel)
-191N-L for pack 2 (access door)
-192E-R for pack 3 (access panel)
S 864-015
(2) Remove the DO-NOT-OPERATE tag from the applicable PACKS selector, on the P5 panel.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WATER ASPIRATOR - ADJUSTMENT/TEST
_________________________________
1. General_______
A. This procedure has instructions to do a test of the water aspirators. One aspirator is installed in each air cooling pack.
TASK 21-51-11-705-001
2. Water Aspirator Test____________________
A. References
(1)
AMM 06-09-03/201, Body Section 44 Access Doors and Panels
(2)
AMM 21-00-00/201, Air Conditioning System
(3)
AMM 21-51-05/201, Water Separator
(4)
IPC 21-51-05 Fig. 2
B. Access
(1)
Location Zone
133 Air Conditioning Equipment Bay, LH
134 Air Conditioning Equipment Bay, RH
(2)
Access Panel
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