Thrust Reverser Directional Control Valve Installation
Figure 401A (Sheet 2)
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78-34-01
RESTRICTORS ú
ú N02 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 406Jun 10/95
(d)
Install the protection plugs and covers on the lines and the ports.
(e)
Remove the three bolts (11) and washers (12) which attach the DCV (2) to the strut bracket.
(f)
Disconnect the bonding strap (3) from the DCV (2).
NOTE: The bonding strap (3) is found below the forward
____
hydraulic connection.
(g)
Remove the DCV (2) and the extend flow control tee (1) from the strut.
(h)
Remove the flow control tee (1) from the DCV (2)
(AMM 78-34-02/401).
S 024-024-N00
(5) AIRPLANES WITH ONE-WAY VALVE RESTRICTORS; remove the DCV from the strut (Fig. 401).
(a)
Loosen the clamp for the hydraulic extend and retract lines.
(b)
Disconnect the tee assembly for the hydraulic extend and retract lines (1A and 4A).
NOTE: Do not disconnect the one-way valve restrictors from the
____
reducer tee.
1) Loosen the swivel nuts for the reducer tees on the flow control tee. 2) If necessary, loosen the tube nuts and remove the tee assembly (AMM 78-34-02/401). 3) Install the protection plugs and covers on the lines and the ports.
(c)
Remove the three bolts (11) and washers (12) which attach the DCV (2) to the strut bracket.
(d)
Remove the bonding strap (3) from the forward face of the DCV (2).
(e)
Remove the DCV (2) from the strut.
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78-34-01
ALL ú ú N02 Page 407 ú Oct 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 034-026-N00
(6) Remove the union (9) and the packing (10) from the hydraulic pressure and return ports.
(a) Discard the packing (10).
S 034-027-N00
(7) Remove the union (7) and the packing (8) from the hydraulic retract port.
(a) Discard the packing (8).
S 034-028-N00
(8) Remove the bonding strap (3) from the strut structure if it is necessary.
TASK 78-34-01-404-030-N00
3. Install the Thrust Reverser Directional Control Valve
_____________________________________________________
A. Consumable Materials
(1)
D00153 Hydraulic Fluid - BMS 3-11 (Type IV, Class 1)
(2)
D00054 Lubricant, Hydraulic System - MCS 352
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
B. Parts
~............................................................................... | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................. | 401 | 1A | Extend Flow Tee | 78-34-01 | 01 | 245 | | | 1 | Extend Flow Tee and Restrictor | | | | | | 2 | Directional Control Valve | | | 315 | | | 3 | Bonding Strap | | | 50 | | | 4A | Retract Flow Tee | | | 250 | | | 4 | Retract Flow Tee and Restrictor | | | 255 | | | 5 | Hydraulic Extend Lines | | | 170,210 | | | 6 | Hydraulic Retract Lines | | | 155,190 | | | 7 | Union | | | 235 | | | 8 | Packing | | | 255 | | | 9 | Union | | | | | | 10 | Packing | | | 28 | | | 11 | Bolt | | | 295 | | | 12 | Washer | | | 290 | | | 13 | Union | | | 40 | | | 14 | Packing | | | | | | 15 | Nut | | | 35 | | | 16 | Washer | | | 25 | | | 17 | Screw | | | | | | 18 | Washer | | | 20 | | | 19 | Nut | | | 210 | | | 20 | Washer | | | | | | 21 | Washer | | | 190 | | | 22 | Nut | | | 270 | | | 23 | Packing | | | | | | 24 | Retainer | | | 300 | | | 25 | Screw | | | | | | 26 | Nut | | | 40 | | | 27 | Washer | | | 28 | 2.....….........…....................................…..........….....….........1
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