ADJUSTMENT
COUNTERBALANCE
FITTING
ATTACH BOLTS
ROLLER (DOOR OPEN) ROLLER (DOOR CLOSED) COUNTERBALANCE ASSEMBLY SEE C GUIDE PIN COUNTERBALANCE
A
2 1 COUNTERBALANCES WITHOUT SLEEVE, WASHER AND SCREW COUNTERBALANCES WITH SLEEVE, WASHER AND SCREW.
Figure 402 (Sheet 1) Cargo Compartment Door Balance Mechanism
L07677
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A 737-300/400/500MAINTENANCE MANUAL
CABLE CLIP
Cargo Compartment Door Balance Mechanism
Figure 402 (Sheet 2)
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B04499
A
737-300/400/500
MAINTENANCE MANUAL
AFT DOOR FLUSHNESS AFT DOOR CLEARANCE
NOTE: THIS ILLUSTRATION SHOWS THE LIMITS TO ALIGN THE CARGO COMPARTMENT DOOR CONTOURS WITH THE FUSELAGE CONTOURS. A PLUS LIMIT SHOWS THAT THE DOOR IS OUTBOARD OF THE CONTOUR OF THE FUSELAGE. A MINUS LIMIT SHOWS THAT THE DOOR IS INBOARD OF THE CONTOUR OF THE FUSELAGE.
YOU CAN INCREASE THE FLUSHNESS LIMITS BY 0.03 INCH IN ONE OR MORE LOCATIONS. THE SUM OF THE LENGTHS OF THE INCREASED LIMITS MUST NOT BE MORE THAN 10 INCHES.
MEASURE ALL DIMENSIONS WHEN THE AIRPLANE IS NOT PRESSURIZED.
ALL DIMENSIONS ARE IN INCHES.
Cargo Compartment Door Contour Adjustment
Figure 403
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A
737-300/400/500MAINTENANCE MANUAL
CARGO COMPARTMENT DOORS - INSPECTION/CHECK
__________________________________________
1. General_______
A. This procedure contains a task to visually examine the cargo compartment doors.
B. You will use this task for the forward and the aft cargo doors.
TASK 52-31-00-206-001-B00
2. Cargo Compartment Doors Check_____________________________
A. References
(1)
52-31-00/001, Cargo Compartment Doors
B.
Access
(1)
Location Zone
209 Forward Cargo Door
219 Aft Cargo Door
(2)
Access Panel
4404 Forward Cargo Door
4504 Aft Cargo Door
C.
Procedure
S 216-002-B00
(1)
Look at the external skin of the door.
(a)
Look for cracks.
(b)
Look for burrs.
(c)
Look for corrosion.
S 866-003-B00
(2)
Open the door (Ref 52-31-00/001).
S 016-004-B00
(3)
Remove the insulation pad from the internal skin of the door.
S 216-005-B00
(4)
Look at the internal skin of the door.
(a)
Look for cracks.
(b)
Look for burrs.
(c)
Look for corrosion.
S 216-006-B00
(5)
Examine the internal door structure.
(a)
Look at the frames. 1) Look for cracks. 2) Look for corrosion. 3) Make sure the frames attach correctly.
(b)
Look at the pulley brackets. 1) Look for cracks. 2) Look for corrosion. 3) Make sure the brackets attach correctly.
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