29-17-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 085-052
(39)
Disconnect the air supply from the port T on the reservoir pressurization module.
S 435-053
(40)
Install the plug and the packing in the port T on the reservoir pressurization module.
S 085-054
(41)
Disconnect the pressure gage from the port GA on the reservoir pressurization module.
S 435-055
(42)
Install the plug and the packing in the port GA on the reservoir pressurization module.
S 865-028
(43)
Remove the DO-NOT-CLOSE tags and close the three of these circuit breakers which you opened before:
(a)
P7 Overhead Circuit Breaker Panel
1) 7F03 HYDRAULICS HYDIM 1
2) 7G03 HYDRAULICS HYDIM 2
3) 7H03 HYDRAULICS HYDIM 3
4) 7J03 HYDRAULICS HYDIM 4
S 415-029
(44)
For hydraulic systems 2 and 3, close the aft access door for pressure relief in the lower midspar (AMM 06-09-09/201 and AMM 54-62-00/201).
S 215-030
(45)
Examine the latches on the doors in the trailing edge fairing for cracks and wear.
(46)
Make sure that all latches are there.
(47)
Repair and adjust the latches if it is necessary (AMM 54-62-02/501).
S 215-056
S 825-057
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29-17-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 415-031
CAUTION:_______ MAKE SURE YOU LATCH THE DOORS ON THE TRAILING EDGE FAIRING
CORRECTLY. IF THE DOORS OPEN DURING A FLIGHT, THIS CAN CAUSE
DAMAGE TO THE DOORS.
(48)
Close the doors in the trailing edge fairing (AMM 06-09-09/201 and AMM 54-62-00/201).
S 865-032
(49)
Remove electrical power if it is not necessary (Ref 24-22-00/201).
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29-17-00
ALL ú ú 01 Page 507 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
RESERVOIR PRESSURIZATION MODULE - MAINTENANCE PRACTICES
_______________________________________________________
1. General_______
A. This procedure has these tasks:
(1)
Reservoir Pressurization Module Removal
(2)
Reservoir Pressurization Module Installation
(3)
Filter Element Removal
(4)
Filter Element Installation
(5)
Check Valve Removal
(6)
Check Valve Installation
(7)
Bleed Valve Removal
(8)
Bleed Valve Installation.
B.
You must open the doors in the trailing edge fairing to get access for these tasks.
C.
The reservoir pressurization module is the same on each engine.
D.
When you remove a component, you must replace the packings that are on the component.
TASK 29-17-01-002-001
2. Reservoir Pressurization Module Removal (Fig. 201)_______________________________________
A. References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
(2)
AMM 36-00-00/201, Pneumatic System
(3)
AMM 54-62-00/201, Nacelle Strut Access Panels
B.
Access
(1)
Location Zone
454 System 1 - Strut Aft Fairing
464 System 2 - Strut Aft Fairing
474 System 3 - Strut Aft Fairing
484 System 4 - Strut Aft Fairing
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