AFDS AIL FORCE LIM
 7) AFDS MCP DC
 8) AUTO FLT CONT SYS A MACH TRIM DC
 9) AUTO FLT CONT SYS A MACH TRIM AC

 (b)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6 Circuit Breaker Panel: 1) AUTO FLT CONT SYS B WARN LIGHT BAT 2) AUTO FLT CONT SYS B ENGAGE INTLK B 3) AUTO FLT CONT SYS B FCC DC 4) AUTO FLT CONT SYS B SNSR EXC AC 5) AFDS MCP CRS-2 6) AUTO FLT CONT SYS B MACH TRIM DC 7) AUTO FLT CONT SYS B MACH TRIM AC 8) STABILIZER TRIM CONT 9) STABILIZER TRIM ACTUATOR

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
(c) Remove the DO-NOT-OPERATE tag from the APU master switch on the P5 forward overhead panel.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
COOLING AIR SHUTOFF VALVE PNEUMATIC LINE FILTER - REMOVAL/INSTALLATION
______________________________________________________________________
 1.  General
_______
 A.  This procedure gives the tasks to remove and to install the cooling air shutoff valve pneumatic line filter (which is referred to as the 'pneumatic line filter'). The pneumatic line filter is connected to the pressure line from the pneumatic actuator to the bleed air duct.
 TASK 49-51-22-004-001
 2.  Cooling Air Shutoff Valve Pneumatic Line Filter Removal (Fig. 401)
_______________________________________________________
 A.  Access
 (1)  
Location Zones
 101 Control Cabin (Left)
 205 Electronic Compartment
 703 APU Compartment

 (2)  
Access Panels
 1201 Electronic Equipment Access Door
 3804 APU Cowl Door

 B.  Procedure
 S 864-002
 (1)  Set the switch and the circuit breaker:
 (a)  
Set the APU master switch, on the P5 forward overhead panel, to the OFF position and attach a DO-NOT-OPERATE tag.

 (b)  
Open this circuit breaker and attach a DO-NOT-CLOSE tag: 1) E3-3 Electrical Shelf, APU Control Unit

 S 014-003
 (2)  Open the APU cowl door:
 (a)  
Open the latches for the APU cowl door.

 (b)  
Open the APU cowl door.

 (c)  
Connect the door support rods.

 S 034-014
 (3)  Disconnect the pressure line:
 (a) Disconnect the pressure line from the reducer.
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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
UPPER
SHROUD
PRESSURE LINE TO THE PNEUMATIC ACTUATOR
PNUEMATIC LINE FILTER
SEEA
CHECK VALVE
(TO FUEL HEATER)
(REF)

FWD
BLEED AIR DUCT

PRESSURE LINE TO THE PNEUMATIC ACTUATOR
REDUCER
PNEUMATIC LINE FILTER
GASKET
BLEED AIR DUCT GASKET
A
Cooling Air Shutoff Valve Pneumatic Line Filter Installation
Figure 401

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(b)  Install a cap on the pressure line.
　
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