737-300/400/500
MAINTENANCE MANUAL

LATCH PIN  TOP 
HOLE  GUIDE PLATE 
SHIM 

TOP GUIDE PLATE BOLT (4 LOCATIONS)
LATCH PIN
LATCH LEVER
INBD FWD
Repair of the Latch Pin Hole in the Top Guide Plate Figure 801 (Sheet 1)
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 52-11-00
 ú ú B01 Page 802 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
LATCH PIN HOLE
TOP GUIDE PLATE
SHIM
TOP GUIDE
PLATE BOLT
(4 LOCATIONS)

LATCH PIN
TRIGGER
LATCH LEVER
INBD FWD
Repair of the Latch Pin Hole In the Top Guide Plate Figure 801 (Sheet 2)
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 ú ú B01 Page 803 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 328-004-B00
 (3)  
Make a spotface at the latch pin hole.

 (a)  
Make the depth of the spotface 0.080 inch.

 (b)  
Make the diameter of the spotface 0.593 inch.

 S 358-005-B00
 (4)  
Make a bushing.

 (a)  
Use the piece of 17-4PH stainless steel to make the bushing.

 (b)  
Make the thickness of the bushing the same as the depth of the spotface.

 (c)  
Make the inner diameter of the bushing 0.3438 to 0.3478 inch.

 (d)  
Make the outer diameter of the bushing larger than the outer diameter of the spotface by 0.0015 to 0.0020 inch.

 (e)  
Heat-treat the bushing. 1) Increase the temperature of the bushing to 900 degrees F

 for one hour. 2) Let the temperature of the bushing decrease in the air.
 S 428-006-B00
 (5)  
Install the bushing in the top guide plate.

 (a)  
Put the bushing in the spotface.

 (b)  
Put Alodine on the area of the repair (MM 51-21-41/701).

 (c)  
Put the primer on the area of the repair (AMM 51-21-99/701).

 S 418-007-B00
 (6)  
Install the top guide plate.

 (a)  
Move the top guide plate to align the holes for the bolts.

 (b)  
Install the bolts in the top guide plate.

 TASK 52-11-00-308-008-B00
 3.  Forward Entry Door Torque Tube Repair (Fig. 802)_____________________________________
 A. General
 (1)  This task gives the steps to repair the holes in the torque tube, the hinge pin and the sleeves. This task makes an unsatisfactory hole larger. Then, the task installs a bolt with a larger diameter.
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 52-11-00
 ALL  ú ú B01 Page 804 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
LATCH ASSEMBLY (4 LOCATIONS)
TORQUE TUBE
SEE A
FORWARD
ENTRY
DOOR
HINGE SUPPORT IN THE DOOR STRUCTURE
HINGE PIN (4 LOCATIONS) BOLT
CONNECTING
SLEEVES
BOLT
TORQUE TUBE (4 LOCATIONS)
HINGE PIN
A
Forward Entry Door Torque Tube Repair Figure 802
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 52-11-00
 ALL  ú ú B01 Page 805 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 B. Consumable Materials
　
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