S 034-011

 (6)  
Discard the O-rings.

 S 034-012

 (7)  
Put a plug in the openings.

 S 034-013

 (8)  
Remove the 3 bolts to remove the isolation valve.

 S 024-032

 (9)  
Remove the isolation valve.

 TASK 32-44-06-404-014
 3. Install the Accumulator Isolation Valve on the Parking Brake (Fig. 401)
____________________________________________________________
 A. Equipment
 (1)  
Landing Gear Door Locks, (AMM 32-00-15/201)

 B.
Consumable Materials

 (1)  
D00153 Fluid, Hydraulic - BMS 3-11

 (2)  
D00054 Lubricant, Hydraulic System Fittings -MCS 352

 C.
References

 (1)  
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System

 (2)  
AMM 32-00-15/201, Landing Gear Door Locks

 (3)  
AMM 32-44-00/501, Parking Brake System

 D.
Access

 (1)  
Location Zones
 144 Right Main Lainding Gear Wheel Well
 211/212 Control Cabin

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757 MAINTENANCE MANUAL
 E. Install the Accumulator Isolation Valve
 S 164-015
 (1)  
Clean the mating surfaces of the isolation valve and the mounting bracket.

 S 424-016

 (2)  
Attach the isolation valve to the mounting bracket with the 3 bolts (Detail A).

 S 644-017

 (3)
Apply a thin layer of hydraulic fluid or lubricant to the O-rings.

 S 434-018

 (4)  
Install the O-rings on the unions.

 S 434-019

 (5)  
Connect the hydraulic lines to the isolation valve.

 S 864-020

 (6)  
Pressurize the right and left hydraulic systems (AMM 29-11-00/201).

 S 844-021

 (7)  
Slowly and fully, push and release the brake pedals six times to bleed the system.

 NOTE: There must be a minimum of 5 seconds between each time you
____
 push down and release the brakes.

 S 864-022
 (8)  
Remove the pressure from the right hydraulic system
 (AMM 29-11-00/201).

 (9)  
Operate the brake pedals a minimum of seven times.

 S 844-023
 

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757 MAINTENANCE MANUAL
 S 844-024
 (10)
 Make sure the accumulator pressure, on the pressure gage in the flight compartment, is stable.

 S 864-025

 (11)
 Remove the pressure from the left hydraulic system
 (AMM 29-11-00/201).

 S 844-026

 (12)
 Operate the brake pedals a minimum of seven times.

 S 844-027

 (13)
 Make sure the accumulator pressure goes down.

 F.
Put the Airplane Back to Its Usual Condition

 S 864-028
 (1)  
Pressurize the right hydraulic system to pressurize the parking brake accumulator (AMM 29-11-00/201).

 S 844-029

 (2)  
Set the parking brakes (AMM 32-44-00/501).

 S 844-030

 (3)  
Remove the wheel chocks from the wheels.

 S 094-035
 WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  
Remove the door locks from the landing gear doors and close the doors (AMM 32-00-15/201).

 S 864-031

 (5)  
Remove the pressure from the hydraulic system if it is not necessary (AMM 29-11-00/201).

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757 MAINTENANCE MANUAL
 PARKING BRAKE SWITCH - MAINTENANCE PRACTICES
____________________________________________
 1.  General
_______
 A.  This procedure contains four tasks. The first task removes the parking brake switch. The second task installs the parking brake switch. The third task adjusts the parking brake switch. The fourth task is a procedure to test the parking brake switch.
 TASK 32-44-08-002-001
 2.  Remove the Parking Brake Switch (Fig. 201)
　
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本文鏈接地址：757 AMM 飛機維護手冊 起落架 CHAPTER 32 - LANDING GEAR 3(68)