(d)  
11K25, HYDRAULICS ELEC PUMP LEFT

 (e)  
EICAS (6 locations)

 S 864-017
 (7)  
Supply electrical power (AMM 24-22-00/201).

 S 864-018

 (8)  
Pressurize the hydraulic reservoir that contains the new temperature transmitter (AMM 29-11-00/201).

 S 214-019

 (9)  
Make sure there is no hydraulic leakage at the temperature transmitter.

 S 164-020
 CAUTION: QUICKLY CLEAN THE INSTALLATION AREA OF ALL HYDRAULIC
_______ FLUID. HYDRAULIC FLUID CAN CAUSE DAMAGE TO THE AIRPLANE EQUIPMENT.
 (10)
 Clean all hydraulic fluid from the installation area (AMM 12-25-01/301).

 S 714-021

 (11)
 Push the ELEC/HYD switch on the EICAS MAINT panel on the right side panel, P61.

 S 214-022

 (12)
 Make sure the (L, R, C) HYD TEMP indication on the EICAS display shows the approximate fluid temperature.

 S 414-023

 (13)
 If you replaced the temperature switch for the center system reservoir, close the access door for the hydraulic service bay, 197KL (AMM 06-41-00/201).

 S 094-024
 WARNING: USE THE PROCEDURE IN AMM 32-00-15 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (14) If you replaced the temperature switch for the left or right system reservoir, remove the door locks from the landing gear doors and close the doors (AMM 32-00-15/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-32-03
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A

757
MAINTENANCE MANUAL

 S 864-025
 (15)
 Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 864-026

 (16)
 Remove hydraulic power if it is not necessary (AMM 29-11-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-32-03
 ALL  ú ú 01 Page 406 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 HYDRAULIC FLUID QUANTITY INDICATING SYSTEM - DESCRIPTION AND OPERATION
______________________________________________________________________
 1.  General_______
 A.  A hydraulic fluid quantity indicating system is provided for each main hydraulic system. This system indicates fluid quantity in each hydraulic reservoir. Low quantity warning lights are on the hydraulic control panel in the flight compartment. The EICAS display contains a digital readout of fluid quantity in each reservoir. The display also provides low quantity messages. A remote quantity indicator is at the central ground servicing station (AMM 29-18-00). The quantity indicating system is powered by 115 volts ac from overhead circuit breaker panel P11. The low quantity warning lights are powered by 28 volts dc from master dim and test circuit breakers on panel P11.
 2.  Component Details (Fig. 1 and 2)_________________
 A.  EICAS Display
 (1)  
The EICAS display shows a digital readout of fluid quantity in each reservoir in both the status and maintenance modes. The quantity readout is a decimal number indicating a fraction of full.
　
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