(3)  
Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags:

 (a)  11D31, HYDRAULIC PTU CONT
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A

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MAINTENANCE MANUAL

LEFT MAIN 
WHEEL WELL 
SEE  A 
POWER TRANSFER 
UNIT (REF) 
FILTER MODULE FOR 
THE TRANSFER UNIT 
(PTU) 
SEE  B 
ELECTRICAL 
CONNECTOR  AFT 

OUTLET LINE
DIFFERENTIAL PRESSURE INDICATOR
SEE C
WASHER (3 LOCATIONS)
MOUNTING BOLT (3 LOCATIONS)
INDICATION CONTROL PRESSURE SWITCH
PRESSURE 
SWITCH  CHECK VALVE  LEFT MAIN WHEEL WELL 
SEE  E  A 
INLET LINE 
MOUNTING BRACKET 

ELECTRICAL
CONNECTOR
FILTER
SEE D

FILTER MODULE
B

Filter Module Installation
Figure 401 (Sheet 1)

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757 MAINTENANCE MANUAL
FILTER MODULE
FILTER MODULE HOUSING
BACKUP RING
O-RING
O-RING
CHECK VALVE

Filter Module Installation
Figure 401 (Sheet 2)

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 E.
F.
G.
A
757
MAINTENANCE MANUAL

 S 864-005
 (4)  Remove the pressure from the left and right hydraulic systems and
 the reservoirs (AMM 29-11-00/201).Remove the Filter Module
 S 034-006
 (1)  
Disconnect the electrical connectors from the pressure switches on the filter module.

 S 034-007

 (2)  
Disconnect the hydraulic lines from the filter module.

 S 024-008

 (3)  
Remove the bolts and the washers which hold the filter module.

 S 034-009

 (4)  
Remove the unions from the filter module.

 S 034-010

 (5)
Remove the O-rings from the unions.Remove the Filter Element

 S 034-062
 CAUTION: DO NOT PRESSURIZE THE HYDRAULIC SYSTEM AFTER YOU REMOVE THE
_______ FILTER ELEMENT CASE. THIS CAN CAUSE DAMAGE TO THE FILTER MODULE OR THE CHECK VALVE.
 (1)  
Remove the filter element case from the filter module.

 S 024-012

 (2)  
Remove the filter element from the filter module.

 S 034-013

 (3)  
Remove the O-rings and the backup rings from the filter element

 case.Remove the Pressure Switches
 S 034-014
　
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