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 ALL  ú ú B01 Page 110 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L15280
A 737-300/400/500MAINTENANCE MANUAL
FROM SHEET 1 (BLOCK 2)
NO YES YES

3 MOVE THE DOOR TO THE
13 REMOVE THE DOOR LINING
25 REMOVE AND REPLACE THE
COCKED POSITION AND TO THE FOR THE APPLICABLE DOOR DAMAGED TORQUE TUBE FOR THE
UNLATCHED POSITION.(AMM 52-11-31/401, APPLICABLE DOOR

 LOOK AT THE DOOR HINGE AMM 52-13-21/401, (AMM 52-11-11/401, ARMS WHILE THE DOOR MOVES. AMM 52-41-31/401). AMM 52-13-11/401, DO THE HINGE ARMS MOVE DO A CHECK OF THE DOORAMM 52-41-11/401). INDEPENDENTLY OF EACH OTHER? TORQUE TUBE. IS THE DOOR TORQUE TUBE

NO
CRACKED, TWISTED, OR BROKEN?

NO
YES

14 DO A VISUAL CHECK OF THE
26 REPLACE THE NECESSARY
DOOR TORQUE TUBE FOR BOLTS BOLTS FOR THE APPLICABLE DOOR
THAT ARE NOT INSTALLED AT THE (AMM 52-11-11/401,
SPLINE JOINTS. AMM 52-13-11/401,
ARE BOLTS NOT INSTALLED? AMM 52-41-11/401).

NO

YES YES4 MOVE THE DOOR TO THE
REMOVE THE DOOR LINING COCKED POSITION WITH THE OUTER FOR THE APPLICABLE DOORHANDLE.(AMM 52-11-31/401,
IS THE OUTER HANDLE AMM 52-13-21/401, MOVEMENT ROUGH? AMM 52-41-31/401). DO A CHECK FOR WORN AREAS
NO
ON THE CAM FOLLOWER ROLLERS. ARE THE CAM FOLLOWER ROLLERS WORN?

27 REPLACE THE WORN TORQUE
TUBE SPLINES FOR THE
APPLICABLE DOOR
(AMM 52-11-11/401,
AMM 52-13-11/401,
AMM 52-41-11/401).

28 REMOVE AND REPLACE THE
WORN COMPONENTS FOR THE
APPLICABLE DOOR
(AMM 52-11-11/401,
AMM 52-13-11/401,
AMM 52-41-11/401).

29 LUBRICATE THE CAM FOLLOWER
ROLLERS FOR THE APPLICABLE
DOOR (AMM 12-25-11/301,
AMM 12-25-21/301,
AMM 12-25-41/301).

The Fault Is In the Door Cocking Cycle
Figure 106 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-01-00
 ALL  ú ú B01 Page 111 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L15285
A 737-300/400/500MAINTENANCE MANUAL
PREREQUISITES 
NONE 
THE FAULT IS IN THE DOOR LATCH/UNLATCH CYCLE  ____NOTE:  MECHANISM, LATCH CONTROL RODS, LATCH TORQUE TUBES, LATCH CRANKS AND ROLLERS, GATE CONTROL RODS AND GATES. THE PRIMARY DOOR COMPONENTS ARE THE DOOR HANDLE 

HANDLE TORQUE FOR THE CORRECT HANDLE TORQUE FOR THE
APPLICABLE DOOR APPLICABLE DOOR
(AMM 52-11-00/501, (AMM 52-11-00/501,
AMM 52-13-00/501, AMM 52-13-00/501,
AMM 52-41-00/501). AMM 52-41-00/501).

IS THE HANDLE TORQUE NOT IN TOLERANCE?

NO YES YES

3 MOVE THE HANDLE TO THE
21 DO A CHECK OF THE EXTERIOR
43 REPLACE THE DAMAGED OR
CLOSED AND LATCHED POSITION.DOOR HANDLE FOR DAMAGED OR WORN COMPONENTS FOR THE

PUT THE EXTERIOR DOOR WORN COMPONENTS.APPLICABLE DOOR HANDLE IN THE EXTENDED ARE THERE DAMAGED OR WORN (AMM 52-11-11/401, POSITION. COMPONENTS? AMM 52-13-11/401,
DOES THE EXTERIOR DOOR AMM 52-41-11/401).
NO
HANDLE STOP MORE THAN 1 INCH FROM THE STOWED POSITION WHEN RELEASED?

44 LUBRICATE THE DOOR HANDLE
NO  BEARING AND CAM FOLLOWER ROLLERS FOR THE APPLICABLE DOOR (AMM 12-25-11/301,SEE SHEET 2 AMM 12-25-21/301,(BLOCK 4) AMM 12-25-41/301).
The Fault Is In the Door Latch/Unlatch Cycle
Figure 107 (Sheet 1)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-01-00
 ALL  ú
 ú  B01  Page 112
 ú  Mar 12/00 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L15286
A 737-300/400/500MAINTENANCE MANUAL
FROM SHEET 1
(BLOCK 3)

NO YES YES

4 USE THE INNER HANDLE TO 22 REMOVE THE DOOR LINING
45 REMOVE AND REPLACE THE
UNLATCH THE DOOR AND LATCH IT.FOR THE APPLICABLE DOORWORN COMPONENTS FOR THE
　
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