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78-34-05
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(c) Remove the isolation valve (1).
S 034-012-N00
(12) If it is necessary, remove the screw (12), jumper wire (6), and two washers (3 and 4) from the solenoid valve.
(a) Replace the screw (12).
S 034-013-N00
(13)
Remove the unions (7) and packings (8) from the hydraulic ports on the isolation valve with the marks, "PRESSURE IN" and "CYLINDER OUT".
S 034-014-N00
(14)
Remove the reducer (9) and gasket (10) from the hydraulic port of the isolation valve with the mark "RETURN OUT".
S 034-015-N00
(15)
Remove the restrictor (11) and gasket (10) from the hydraulic port on the isolation valve with the mark "CONTROL IN".
S 034-016-N00
(16)
Remove the solenoid valve (Ref 78-34-08/401) or the pressure switch (Ref 78-34-07/401) if it is necessary to repair them.
NOTE: Because of the tight isolation valve installation, it is
____ recommended you remove the isolation valve first before you replace the pressure switch or solenoid valve.
TASK 78-34-05-404-017-N00
3. Install the Thrust Reverser Isolation Valve
___________________________________________
A. Standard Tools and Equipment
(1)
Bonding Meter
B.
Consumable Materials
(1)
D00196 - BMS 3-11 Type 4 Class 1 Hydraulic Fluid
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
C. Parts
~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Isolation Valve (Outboard) | 78-34-05 | 05 | 1 | | | 1 | Isolation Valve (Inboard) | | 06 | 1 | | | 2 | Bolt (Outboard) | | 05 | 5 | | | 2 | Bolt (Inboard) | | 06 | 5 | | | 3 | Washer (Outboard) | | 05 | 10 | | | 3 | Washer (Inboard) | | 06 | 10 | | | 4 | Washer (Outboard) | | 05 | 15 | | | 4 | Washer (Inboard) | | 06 | 15 | | | 5 | Nut (Outboard) | | 05 | 20 | | | 5 | Nut (Inboard) | | 06 | 20 | | | 6 | Jumper Wire (Outboard) | | 05 | 25 | | | 6 | Jumper Wire (Inboard) | | 06 | 25 | | | 7 | Union (Outboard) | | 05 | 35 | | | 7 | Union (Inboard) | | 06 | 35 | | | 8 | Packing (Outboard) | | 05 | 40 | | | 8 | Packing (Inboard) | | 06 | 40 | | | 9 | Reducer (Outboard) | | 05 | 45 | | | 9 | Reducer (Inboard) | | 06 | 45 | | | 10 | Gasket (Outboard) | | 05 | 55 | | | 10 | Gasket (Inboard) | | 06 | 55 | | | 11 | Restrictor (Outboard) | | 05 | 50 | | | 11 | Restrictor (Inboard) | | 06 | 50 | 2.....….........…...................................…..........…......…........1
D. References
(1)
54-62-00/201, Engine and Nacelle Strut Access Doors and Panels
(2)
12-12-01/301, Hydraulic Systems
(3)
29-11-00/201, Main Hydraulic Supply System
(4)
78-31-00/501, Thrust Reverser System
E.
Access
(1)
Location Zone
450 Strut 1
460 Strut 2
470 Strut 3
480 Strut 4
(2)
Access Panel
451BL Forward Fairing - Strut 1
462EL Forward Fairing - Strut 2
472EL Forward Fairing - Strut 3
481BL Forward Fairing - Strut 4
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