(c)  
Indicator for differential pressure.

 (2)  
To start one of these procedures, do the applicable group of steps that is necessary to install the component. Then, do the "Put the Airplane Back to Its Usual Condition" group of steps.

Consumable Materials

 (1)
D00054 Hydraulic System Lubricant - MCS352References

 (1)  
AMM 12-12-01/301, Hydraulic Systems

 (2)  
AMM 12-25-01/301, Exterior Cleaning

 (3)  
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 (4)
AMM 32-00-15/201, Main Gear Door LocksAccess

 (1)  
Location Zone 143/144 MLG Wheel Well

Install the Return Filter Module (Fig. 401)
 S 644-015
 (1)  
Apply hydraulic lubricant or hydraulic fluid to the new O-rings and the threads on the unions.

 S 434-016

 (2)  
Install the unions and the new O-rings in the openings in the module.

 S 424-017

 (3)  
Put the return filter module in position.

 S 424-018

 (4)  
Install the four bolts and washers which attach the return filter module to the bracket.

 S 434-019

 (5)
Connect and tighten the hydraulic lines to the return filter module.Install the Filter Element (Fig. 401)

 (1)  
Clean the filter element case.

 S 164-020
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 29-11-15
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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MAINTENANCE MANUAL

 S 644-021
 (2)  
Apply hydraulic lubricant or hydraulic fluid to the new O-rings and to the threads on the filter element case.

 S 434-022

 (3)
Assemble the filter element, the new O-rings, and the filter case.

 S 424-023

 (4)  
Install the filter element and case assembly into the return filter module.

 S 434-024

 (5)  
Tighten the filter element case to 420-480 pound-inches.

 S 434-025

 (6)  
Safety the filter element case with wire.

 G.
Install the Indicator for Differential Pressure (Fig. 401)

 S 644-026
 (1)  
Apply hydraulic lubricant or hydraulic fluid to the new O-rings and the threads on the indicator.

 S 434-027

 (2)  
Install the indicator in the return filter module.
　
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