WATER SEPARATOR COALESCER (BAG) - CLEANING/PAINTING
1.  General
A.  Water separator coalescers (bags) may be cleaned for re-use if dirtiness is only cause for removal from the water separator.
B.  Two cleaning steps are provided. The first step need not be used unless the removed bag is contaminated with oil or grease.
2.  Water Separator Bag Cleaning
A.  Equipment and Materials
(1)  
Any regular fabric detergent and washing machine

(2)  
Cleaner, Emulsion alkaline - GMC 528B

B.  Prepare Water Separator Bag for Cleaning
(1)  
Remove separator bag from water separator. Refer to Water Separator Coalescer (Bag) -Removal/Installation.

(2)  
Visually examine bag for oil or grease contamination. If bag appears oily or greasy proceed to step C. (1), if no appearance of oil or grease proceed to step C. (2).

C.  Clean Water Separator Bag
(1)  
Immerse bag in cleaning solvent and gently rub greasy spots, then remove from solvent.

(2)  
Place bag in washer loaded with water and fabric detergent and wash for one normal cycle.

(3)  
Check that no dry cleaning solvent odor exists. If objectionable odor exists, wash for another cycle.

D. Install water separator bag. Refer to Water Separator Coalescer (Bag) - Removal/Installation. 35°F CONTROL VALVE - REMOVAL/INSTALLATION
500 
May 01/03  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  21-51-41 Page 701 

1.  General
A.  A 35°F control valve is provided for each air cycle system. The right or left 35°F control valve removal/installation is the same. The position of the valve at installation is slightly different. Any difference in procedure is noted in the step involved.

504  35°F Control Valve Installation 
May 15/68  Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  21-51-51 Page 401 

2.  Remove 35°F Control Valve
A.  Lower applicable air conditioning equipment bay door.
B.  Disconnect electrical connector from valve (Fig. 401).
C.  Disconnect bonding jumper from valve.
D.  Remove V-band clamps which hold valve in place.
E.  Remove valve.
3.  Install 35°F Control Valve
A.  Check that new valve's position indicator shows closed and that valve is closed.
B.  Locate valve between duct ends and install V-band clamps. Do not tighten clamps.
NOTE:  For left 35°F control valve installation, install valve with motor actuator side of valve rotated up 20 +10 degrees; for right side, install valve with motor actuator side of valve rotated down 20 +10 degrees.
C.  Tighten clamps installed in step 3.B.
D.  Connect bonding jumper to valve (Fig. 401).
E.  Connect electrical connector to valve.
F.  Provide electrical power.
G.  Check that applicable (LEFT or RIGHT) 35°F TEMP CONTROL circuit breaker on panel P6 is closed.
H.  Check that 35°F control valve is closed.
I.  Open applicable TEMP CONTROL circuit breaker, remove electrical connector from 35°F control sensor then close circuit breaker and check that 35°F control valve opens.
J.  Open TEMP CONTROL circuit breaker install 35°F control sensor electrical connector then close circuit breaker and check that 35 degrees control valve closes.
K.  Remove electrical power if no longer required.
L.  Close applicable air conditioning equipment bay door.
500 
21-51-51 Page 402  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Nov 01/73 

FLEXIBLE COUPLING ASSEMBLY - REMOVAL/INSTALLATION
1. General
A.  Flexible coupling assemblies, which connect the four ducts to the ACM, contain four different parts. (See detail B, figure 401.) Joining the ducts to the ACM may be difficult unless the proper method is used for assembling the coupling. This procedure describes the suggested method for disassembly or assembly of the couplings.
2.  Remove Flexible Coupling Assembly
A.  Remove clamp. (See detail B, figure 401.)
B.  Raise edge of sleeve adjacent to component being removed and push sleeve over until its edge rides on outer surface of ring. (See detail A, figure 401.)
C.  Slide sleeve and ring on component not being removed until retainer is revealed.
D.  Remove retainer.
3.  Prepare to Install Flexible Coupling Assembly
NOTE: This preparation is applicable only when a new coupling or sleeve is being installed.
　
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