(c)
Open the handle.
(d)
Make sure the lockpin makes an overlap of 0.21 +/-0.02 inch with the lockpin receptacle.
NOTE: Look at the ink on the lockpin to know the dimension
____
of the overlap.
(e) Put washers between the lockpin receptacle and the handle housing if it is necessary to get the correct dimension.
S 825-007
(6)
Adjust the handle open position.
(a)
Open the handle.
(b)
Make sure the handle touches the handle stop (Fig 501).
(c)
Make sure the pressure relief doors open 5.95 +/-0.40 inch (Section A-A).
(d)
Add or remove rubber washers to the handle stop if it is necessary to get this dimension.
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A
747-400 MAINTENANCE MANUAL
MASTER LATCH LOCK HANDLE - REPAIRS
__________________________________
1. General
_______
A. This procedure contains a task to repair the master latch lock handle.
B. You can use this procedure to replace the shear pin in the external or internal master latch lock handle.
TASK 52-32-06-908-001
2. Replace the Shear Pin on the Master Latch Lock Handle
_____________________________________________________
A. Standard Tools and Equipment
(1)
0.125 inch Diameter Drive-Punch with the tip ground to a 45 degree point.
B.
References
(1)
52-32-00/501, Side Cargo Door
(2)
IPC 52-32-06, Fig 2
C.
Access
(1)
Location Zone
261 Main Deck STA 1720 To STA 2040
(2)
Access Panels
836L Door - Main Deck Cargo
D.
Procedure (Fig. 801)
S 418-008
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE AWAY FROM THE DOOR AND
_______ THE DOOR OPENING WHEN YOU OPERATE THE DOOR. FAILURE OF THE LIFT MECHANISM COULD CAUSE THE DOOR TO CLOSE QUICKLY WHICH COULD CAUSE INJURY OR DAMAGE.
(1)
Close the door.
S 868-009
(2)
Use the internal handle to extend the external handle to the open position.
S 968-004
CAUTION: DO NOT USE REPLACEMENT PARTS FOR SHEAR PINS OR RIVETS SPECIFIED
_______ IN THE LIST OF EQUIPMENT. IF YOU USE PARTS THAT WILL NOT SHEAR, DAMAGE TO THE DOOR MECHANISMS CAN OCCUR.
(3)
Replace the shear pin on the external handle as follows:
(a)
Remove all damaged pieces of the shear pin.
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A
747-400
MAINTENANCE MANUAL
C-C
Master Latch Lock Handle Shear Pin Figure 801
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747-400
MAINTENANCE MANUAL
(b)
Examine the bushings in the external handle for holes and rough surfaces.
(c)
Replace the bushings if it is necessary.
(d)
Align the holes in the handle and driver assembly.
NOTE: Remove interior lining if access hole to shear pin is
____ used to facilitate shear pin replacement.
(e)
Put the shear pin through the bushings.
(f)
Use the drive-punch to put a small flange on both of the ends of the shear pin as follows: 1) Put the pointed end of the drive-punch into the recess at
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