(1)  
Open the door.

 (2)  
Remove the lining from the door (AMM 52-11-02/401).

 (3)
Remove the maintenance access panel, forward of the door.

 S 216-006

 (4)  
Examine the door for corrosion (Fig. 601).

 (a)  
Look at the external and internal skins for cracks and corrosion.

 S 016-003
 S 016-004
 S 016-005
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MAINTENANCE MANUAL

TORQUE TUBE DOOR LATCH  MECHANISM HANDLE 
LINK BELLCRANK 
PAD DOOR STOP ROLLER LATCH  UPPER ARM HINGE  ARM GUIDE 
SEE A BODY TORQUE TUBE  PLATE GUIDE ANCHORPLATE RELEASE LEVER 
UPPER SLEEVE 
HOLD-OPEN FITTING 
SEE B DOOR TORQUE TUBE
TORQUE TUBE DOOR LATCH  CHAIN ACTUATOR POWER EMERGENCY  SNUBBER ROTARY 
DOOR 5  LOWER SLEEVE 
ARM HINGE LOWER  LOWER LINK 
BODY TORQUE TUBE (DOOR 5) 
A 

Main Entry Doors - Inspection
Figure 601 (Sheet 1)

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MAINTENANCE MANUAL

UPPER 
HINGE 
ARM
BEARING 
UPPER 
SHAFT 
GUIDE 
ARM 
BEARING 
ASSEMBLY 
CONTROL  UPPER AND 
ROD  LOWER COUPLING 
CRANK 
LOWER 
SHAFT 
BEARING 

LOWER HINGE ARM
DOOR TORQUE TUBE (DOOR 5)
B
Main Entry Doors - Inspection Figure 601 (Sheet 2)
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 (b)  
Make sure the hinge covers are not loose and all the screws are installed.

 (c)  
Look at the frames, internal brackets, handle mechanism housing, and hinges forthe cracks, corrosion and loose bolts.

 (d)  
Look at the window and frame for cracks and corrosion.

 (e)  
Look at the components that follow for cracks, corrosion, loose bolts, and other damage. 1) The operational mechanism for the door 2) The door torque tube 3) The body torque tube 4) All bearings 5) All attachments.

 (f)  
Look at the latch rollers, latches, and door stops for cracks, corrosion and unwanted particles.

 (g)  
Look at the full opening of the door for corrosion.

 NOTE: Make sure you look at the areas that use non-metallic
____ compounds to make a smooth surface for the seal.
 (h)  Look at the lower surface of lower gate, and the top surface of the upper gate for corrosion (Section A-A, Fig. 602).
 S 356-014
 (5)  
If you find corrosion, repair the area as follows:

 (a)  
See the SRM 52-00-02, for the limits on the removal of material during a repair for corrosion.

 (b)  
See the CPM 52-10-47 Part 3, for the procedures to remove corrosion.

 (c)  
See the CPM 52-10-47 Part 2, for the protective finishes.

 S 216-026
 (6)  
Examine the door.

 (a)  
Look at the drain holes for blockage.

 (b)  
Look at the door seals for cracks, damage, and other damage.

 (c)  
When you examine the door seals to find if there is air or noise leakage, look for these items: 1) The stains from the tobacco smoke on the door seals and
　
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