29-11-28
ALL ú ú 01 Page 402 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 034-008
(7)
Disconnect the electrical connector from the shutoff valve.
S 024-009
(8)
Remove the bolts which hold the shutoff valve.
S 024-010
(9)
Remove the shutoff valve.
S 034-011
(10)
Remove the unions and the O-rings from ports of the shutoff valve.
TASK 29-11-28-404-012
3. Install the Shutoff Valve (Fig. 401)_________________________
A. Consumable Materials
(1) D00054 Hydraulic System Lubricant - MCS 352
B. References
(1)
AMM 12-25-01/301, Exterior Cleaning
(2)
AMM 24-22-00/201, Electrical Power- Control
(3)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
(4)
AMM 32-00-15/201, Landing Gear Door Locks
C. Access
(1) Location Zones
143/144 MLG Wheel Well
D. Procedure
S 644-013
(1)
Apply hydraulic lubricant or hydraulic fluid to the new O-rings and the threads of the unions.
S 434-014
(2)
Install the new O-rings on the unions.
(3)
Install the unions in the ports of the shutoff valve.
(4)
Hold the shutoff valve in its position.
(5)
Put the bonding jumper in its position.
S 424-018
(6)
Install the bolts and the washers which hold the shutoff valve and the bonding jumper.
(7)
Connect the electrical connector to the shutoff valve.
S 434-015
S 424-016
S 434-017
S 434-019
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29-11-28
ALL ú ú 01 Page 403 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(8) S 434-020Connect the hydraulic lines to the shutoff valve.
(9) S 864-021Remove the DO-NOT-CLOSE tags and close these circuit breakers on the overhead panel, P11: (a) 11K16, HYDRAULICS ELEC PUMP RIGHT (b) 11K22, RESERVE BRAKE SOURCE
S 864-022
(10)
Pressurize the right hydraulic system and the reservoir (AMM 29-11-00/201).
S 794-023
(11)
Make sure there are no leaks at the shutoff valve.
S 864-024
(12)
Supply electrical power (AMM 24-22-00/201).
S 864-025
(13)
Push the RESERVE BKS & STRG switch on the pilot's main instrument panel, P1-3, to the ON position.
S 214-026
(14)
Make sure the position indicator on the shutoff valve is in the CLOSED position.
