(b)  
Open these circuit breakers and attach the DO-NOT-CLOSE tags: 1) P6-12 panel a) WINDOW ANTI-ICE R

 2)  P6-11 panel
 a) WINDOW ANTI-ICE L

 S 026-003-B00
 (2)  Remove the window padding from the window, as follows:
 (a)  
Remove the latch handle cover.

 (b)  
Remove the covers from all sides of the window.

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737-300/400/500MAINTENANCE MANUAL
 (c)  
Remove any protective tape around the window opening.

 (d)  
Loosen the protective tape in the corners of the window.

 (e)  
Plug the window interior lining holes in the No. 2 window frame.

 (f)  
Plug the window fluid drain line on the airplane structure at the lower aft side of the No. 2 window.

 S 846-004-B00
 (3)  Prepare the vacuum blanket:
 (a)  
Calibrate the ultrasonic leak detector as follows:

 1)  Use the white noise generator to set the PASS/FAIL indication to 40dB.

 (b)  
Connect the vacuum generator to the vacuum bag.

 (c)  
Connect the vacuum generator to a compressed air source.

 S 486-005-B00
 (4)  Install the vacuum blanket over the No. 2 window (Fig. 601).
 (a)  
Place the vacuum port over the lower aft outside corner of the window.

 (b)  
Make sure the vacuum blanket covers the entire window and the gap between the window and the fuselage.

 (c)  
Remove all bubbles and creases.

 (d)  
Make sure the vacuum gauge indicates 18 to 20 inch (HG) of vacuum after you attach the blanket to the window.

 S 276-006-B00
 (5)  Do a check of the noise levels around the interior of the No. 2 window as follows:
 (a)  
Hold the ultrasonic leak detector approximately 2 inches from the window.

 (b)  
Move the ulstasonic leak detector around the edge of the window.

 (c)  
Use the headphones and watch the noise scale on the ultrasonic leak detector.

 S 816-007-B00
 (6)  If the noise levels are more than 40dB, do the steps that follow:
 (a)  
Determine the exact location of the noise with a stethoscope.

 (b)  
Remove the vacuum blanket from the window.

 (c)  
Do the applicable No. 2 window adjustments
 (AMM 56-12-11/501).

 (d)  
Install the vacuum blanket again and check for leaks.

 NOTE: You will have to repeat the installation of the vacuum
____ blanket and do a check for leaks to make sure all the leaks have been corrected.
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737-300/400/500MAINTENANCE MANUAL
 F.  Put the Airplane Back to Its Usual Condition:
 S 416-008-B00
 (1)  Install the No. 2 window padding:
 (a)  
Install the covers on all sides of the window.

 (b)  
Install the latch handle cover.

 S 866-009-B00
 (2)  Make sure the power is ON for the window heat system.
 (a)  Remove the DO-NOT-CLOSE tags and close these circuit breakers: 1) P6-12 panel a) WINDOW ANTI-ICE R
 2)  P6-11 panel
 a) WINDOW ANTI-ICE L

 S 716-010-B00
 (3)  Do the operational test for the window heat control system (AMM 30-41-00/501).
 TASK 51-11-00-286-011-B00
 3.  Leak Check of the Doors and Hatches___________________________________
 A.  General
 (1)  This task is for the following:
 (a)  
Forward Entry Door

 (b)  
Aft Entry Door
　
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