18.
CONTROL CAM
WASHER
HANDLE MECHANISM
NUT
31. STUB
SHAFT A
Main Entry Door Handle Mechanism Adjustment Figure 501 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
SCREW
CAM FOLLOWER BEARING
Main Entry Door Handle Mechanism Adjustment
Figure 501 (Sheet 3)
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52-11-13
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(f) (g) Pull the external handles (2, 28) until the mechanism touches the bottom and do the step (c) to measure the distance.Calculate the value of the clutch engagement.
NOTE:____ The clutch engagement is equal to the value in step (c) minus the value in step (f), and minus 0.24 inch.
(h) 1) Make sure the value of the clutch engagement is equal or more than 0.100 inch.If the value of the clutch engagement is less than 0.100 inch, adjust the handle mechanism.
TASK 52-11-13-805-003
3. Handle Mechanism Assembly Adjustment
_____________________________________
A. General
(1)
The adjustment for the clutch engagement is necessary if the test results of the handle mechanism is not satisfactory.
(2)
You can do this adjustment with the door installed or removed from the airplane.
B.
Special Tools and Equipment
(1)
MIT65B13164 Wrench Adapter, Bearing Nut
C.
Consumable Materials
(1)
D00013 Grease - MIL-G-23827
(2)
C00259 Primer - BMS 10-11, Type 1
D.
References
(1)
52-11-02/401, Main Entry Door Lining and Insulation
(2)
52-11-13/401, Main Entry Door Handle Mechanism
E.
Access
(1)
Location Zone
211 Main Deck Portal to Sta 488, LH
271 Main Deck, Sta 2040 to Sta 2360, LH
(2)
Access Panel
831L Door - No. 1 Main Entry, LH
835L Door - No. 5 Main Entry, LH
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A
747-400 MAINTENANCE MANUAL
F. Prepare for Adjustment
S 015-005
(1)
Remove the entry door lining (Ref 52-11-02/401).
G.
Adjust the Handle Mechanism Clutch Engagement
S 725-006
(1)
Do a test for the handle mechanism.
S 225-036
(2)
Calculate the value of the clutch engagement.
NOTE: You will use the calculated value of the clutch
____ engagement to find the shim thicknesses on the handle mechanism.
S 225-007
(3)
Do these steps to make sure the shim thickness (16) is correct:
(a)
Remove the stub shaft (31) and shims (32) (if installed).
(b)
Remove the control cam (18) from the inner shaft (12).
WARNING:_______DO NOT LET THE SPRING (11) MOVE FREELY. IT CAN CAUSE INJURY TO PERSONS AND DAMAGE TO PARTS.
(c)
Keep the support fitting (17) from spring pressure (11) and remove the support fitting, clutch collar (15), and laminated shim (16).
(d)
Install the support fitting (17) with the clutch collar (15) installed in the bearing on the inner shaft (12).
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