(2)  
B00666 Solvent - Methyl Propyl Ketone (this is an alternative to Methyl Ethyl Ketone)

 (3)  
D00250 Jelly - Petroleum, VV-P-236

 (4)  
G02086 Brush - Fiber Bristled

 C.  References
 (1) AMM 49-51-22/401, Cooling Air Shutoff Valve Pneumatic Line Filter
 D.  Access
 (1)  
Location Zones
 101 Control Cabin, LH
 205 Electronic Compartment
 703 APU Compartment

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

 E.  Procedure
 S 017-002
 (1)  
Remove the pneumatic line filter for the cooling air shutoff valve (AMM 49-51-22/401).

 S 037-003

 (2)  
Disassemble the filter assembly.

 (a)  Remove the packing and the filter element.
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 49-51-22
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
(b)  Discard the packing.
 S 117-004
 (3)  Clean the pneumatic line filter:
 WARNING: DO NOT GET THE SOLVENT IN YOUR MOUTH, OR YOUR EYES, OR ON
_______ YOUR SKIN. DO NOT BREATHE THE FUMES FROM THE SOLVENT. PUT ON A PROTECTIVE SPLASH GOGGLE AND GLOVES WHEN YOU USE THE SOLVENT. KEEP THE SOLVENT AWAY FROM SPARKS, FLAME, AND HEAT. THE SOLVENT IS A POISONOUS AND FLAMMABLE MATERIAL WHICH CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (a)  
Put the filter element in the small container filled with the solvent. 1) Let the filter soak for a minimum of 1 hour.

 (b)  
Clean the inner and the outer surfaces of the filter head and the housing with the brush and the solvent.

 (c)  
Dry the filter head and the housing with the compressed air.

 (d)  
Dry the filter element with the compressed air.

 S 437-005
 (4)  Assemble the filter assembly:
 (a)  
Install a new packing, lubricated with the petroleum jelly, on the filter head part of the filter assembly.

 (b)  
Put the filter element in the filter head.

 (c)  
Install the filter housing on the filter head.

 1)  Make sure the packing stays in its position when you install the filter housing on the filter head.

 (d)  
Install a lockwire between the filter housing and the filter head.

 S 417-006
 (5)  Install the pneumatic line filter for the cooling air shutoff valve (AMM 49-51-22/401).
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 49-51-22
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
PNEUMATIC ACTUATOR - REMOVAL/INSTALLATION
_________________________________________
 1.  General
_______
 A.  This procedure contains the removal and the installation tasks for the
 pneumatic actuator for the cooling air shutoff valve.

 B.  The pneumatic actuator is on the upper shroud assembly for the APU. You
 remove the actuator through an opening in the horizontal web above the
 APU upper shroud.

 C.  You can get access to the pneumatic actuator through the access door for the horizontal stabilizer compartment. The access door is forward of the APU compartment.
 TASK 49-51-32-004-001
 2.  Pneumatic Actuator Removal (Fig. 401)
__________________________
 A.  Special Tools and Equipment
 (1)  F71336-501 - Horizontal Stabilizer Trim Lock
 B.  Access
 (1)  
Location Zones
 101 Control Cabin, LH
 205 Electronic Compartment
 701 Tail Section
 703 APU Compartment

 (2)  
Access Panels
 1201 Electronic Equipment Access Door
 3701 Horizontal Stabilizer Compartment Access Door
　
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