(b)  
Install the upper window with a gasket on each side.

 (c)  
Align the bolt holes in the upper flanged pan with those in the floor panel.

 (d)  
Install the window retention plate with the 4 bolts.

 S 432-087-B00
 (10) AIRPLANES WITHOUT THE RETENTION PLATE OF THE UPPER WINDOW;
 Do these steps:

 (a)  
Install the upper window with a gasket on each side.

 (b)  
Put the floor panel in its position but do not install the bolts.

 (c)  
Align the bolt holes in the upper flanged pan with those in the floor panel.

 (d)  
Install the 4 bolts that hold the upper flanged pan to the floor panel.

 S 432-088-B00
 (11)
 Install the bolts that hold the floor panel.

 S 432-089-B00

 (12)
 Tighten the hose clamps.

 S 392-090-B00

 (13)
 Seal the bolt heads in the nose wheel well with the BMS 5-95 sealant.

 G. Put the Airplane to its Usual Condition
 S 952-091-B00
 (1)  
Remove the protective cover from each window.

 S 212-092-B00

 (2)  
Make sure that you can see the indicator of the nose gear downlock when you look through the viewer window (Ref Chapter 32, Landing Gear).

 (3)  
Close the viewer cover.

 S 432-094-B00

 (4)  
Install the access panel on the side structure of the nose wheel well.

 S 412-093-B00
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TASK 56-41-31-202-095-B00
 5.  Nose Gear Downlock Viewer Inspection/Check__________________________________________
 A. Examine the viewer of the nose gear downlock.
 S 012-096-B00
 (1)  
Open the viewer cover.

 S 862-097-B00

 (2)  
Put the SWITCH (P5) of the WHEEL WELL LIGHT - ON

 S 212-098-B00

 (3)  
Make sure that you can see the indicator of the nose gear downlock when you look through the viewer window.

 S 212-099-B00

 (4)  
Make sure that the upper and the lower lenses are clean.

 S 862-100-B00

 (5)  
Put the SWITCH of the WHEEL WELL LIGHT - OFF.

 S 412-101-B00

 (6)  
Close the viewer cover.

 TASK 56-41-31-102-102-B00
 6.  Window Cleaning________________
 A. Do these steps to clean the window:
 S 102-104-B00
 (1)  
Remove, clean, and install the viewer assembly and windows . Refer to Window-Removal/Installation.

 S 102-112-B00

 (2)  
Examine the operation of the viewer. Refer to Nose Gear Downlock Viewer- Inspection/Check.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 56-41-31
 ALL  ú ú B08 Page 212 ú Mar 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.