757
MAINTENANCE MANUAL

 S 492-275
 (24)
 Connect the supply line to the C2 ACMP.

 S 872-276

 (25)
 Disconnect supply line of the RAT and allow it to drain completely.

 S 492-277

 (26)
 Connect the supply line to the RAT.

 S 902-278

 (27)
 Remove and replace the following filters:

 (a)
Center system return filter (AMM 29-11-13/401).

 (b)
Center ACMP pressure and case drain filters (AMM 29-11-19/401).

 (c)
RAT pressure and case drain filters (AMM 29-21-11/401).

 S 862-279
 (28)
 Close the center reservoir drain valve and install lockwire.

 S 612-280

 (29)
 Fill the center hydraulic system reservoir (AMM 29-11-00/201).

 S 862-281

 (30)
 Pressurize the center hydraulic system and check for external leakage.

 (31)
 Stow the RAT (AMM 29-21-00/201).

 (32)
 Put the airplane back to its normal condition.

 S 862-282
 S 842-283
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 29-11-00
 ALL  ú ú 01 Page 234 ú Sep 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 MAIN (LEFT, RIGHT, AND CENTER) HYDRAULIC SYSTEMS - ADJUSTMENT/TEST
__________________________________________________________________
 1.  General_______
 A.  This procedure contains five tasks. The first task is an operational test of the main (left, right, and center) hydraulic systems. The second task is an operational test of the reserve brake system. The third task is an operational test of the hydraulic pressure, on the EICAS display, for the engine-driven pump (EDP) in the left (right) hydraulic system. The fourth task is a system test of the main (left, right, and center) hydraulic systems. The fifth task is an operational test of the engine driven pump pressure switch.
 TASK 29-11-00-715-336
 2.  Operational Test - Main (Left, Right, and Center) Hydraulic Systems___________________________________________________________________ (Fig. 501)
 A.  References
 (1)  
AMM 24-22-00/201, Electrical Power - control

 (2)  
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 (3)  
AMM 71-00-00/201, Power Plant - General

 B.  Access
 (1)  Location Zone
　
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