Electronic Equipment Compartment 
External Access Door Adjustment  500 
52-48-41  Figure 501 (Sheet 3)  May 15/69 
Page 504 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

500  Electronic Equipment Compartment External Access Door Adjustment 
Jun 20/84  Figure 501 (Sheet 4)  52-48-41 
Page 505 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

 Electronic Equipment Compartment  500 
52-48-41  External Access Door Adjustment  May 15/69 
Page 506  Figure 501 (Sheet 5) 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

(a)  
Loosen bolts attaching track stop brackets (13, figure 501) to beam (12).

(b)  
Extend track (15) until track ends locate in brackets (13).

(c)  
Adjust brackets (13) forward or aft so that track (15) has 0.020- to 0.050-inch total forward and aft movement on brackets. Make sure track locates naturally into brackets without any forward or aft straining of track and without any binding of track rollers.

(d)  
Tighten bolts attaching track stop brackets (13) to beam (12).

(e)  
Attach door to track.

(f)  
Loosen four bracket attach bolts (10) that secure track attach brackets (14) to door.

(g)  
Position door in door opening and lock the door.

(h)  
Check that ends of track (15) are fully located in track stop brackets (13).

(i)  
Tighten bracket attach bolts (10).

(j)  
Engage uplatch (20) on uplatch catch on lower web (5).

(k)  
Adjust shims on uplatch catch so there is 0.020 (+0.000/-0.000) inch clearance between the uplatch pin and stop.

(1)  
Gain access to control rod (25, section C-C), loosen locknut and adjust trip lever (23) and control rod with washer against the bearing, to give 0.025 (+0.005/-0.005) inch clearance between uplatch (20) and pin in uplatch catch. One-half turn of the control rod equals 0.013 inch between pin and latch. Tighten locknut.

(m)  
Remove all washers from behind head of striker (24) on door then screw striker finger-tight into trip lever (23).

(n)  
Allow track to extend until ends of track (15) are fully located in track stop brackets

(13) on beam (12).

(o)  
If the door releases from the track in the condition described in step (n), add one washer (BACW10P227AX) between striker (24) and trip lever (23) . Lock with cotter pin. Proceed to step (q).

May 15/69  52-48-41
Page 507
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

(p)  
If door (1) does not release from track (15), in the condition described in step (0), add washers (BACW10P227AX) one at a time until the door will release from the track. When the correct number of washers have been added to achieve door release from the track, add one additional washer. Lock with cotter pin.

(q)  
Check that during both opening and closing cycles of the door, that no interference or undue straining of the track occurs.

(7)  Adjust end clearance between ends of rollers and lower web.
NOTE: The following described adjustments should be made in the sequence indicated.
(a)  
Roll lower web (5, figure 501), inboard until end "C" is within 1 inch of location "G."

(b)  
Move lower web forward until ends of forward rollers (16) are flush with forward track of lower web.

NOTE: No clearance allowed.

(c)  
Adjust end clearance between ends of aft rollers at location "G" and track on lower web (5) at end "C." Remove shim laminations from rollers, either forward or aft rollers, to maintain 0.01 (+0.02/-0.01) inch end clearance. (See section A-A.) Do not remove the two washers (26) on each roller (16).

(d)  
Roll lower web outboard until end "D" is within 1 inch of location "H."

(e)  
Repeat steps (b) and (c) using end "D" with roller location "H."

(f)  
Check that upper web (4) rolls the entire length of lower web (5) without interference.

(8)  Adjust end clearance between ends of rollers and track.
NOTE: The following described adjustments should be made in the sequence indicated.
(a)  
Roll upper web (4, figure 501), outboard until location "E" is within 1 to 2 inches of end "A."

(b)  
Move upper web forward until ends of forward rollers (3) are flush with forward  track (2).
　
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