SMALL
WASHER WASHER
BOLT 1
NUT
WASHERS 2
INSTALLATION EXAMPLE B-B
1 INSTALL THE WASHERS (AN960KD616L, AN960-616L, AN960-616) TO SET A 0.01-0.02 INCH CLEARANCE BETWEEN THE SURFACE OF THE CASTING AND THE WASHERS.
2 INSTALL THE BOLTHEAD SO IT POINTS FORWARD ON THE FORWARD TENSION LATCH, WHICH IS BY THE EXHAUST DOOR WITH THE LOUVERS. THE BOLTHEAD MUST POINT AFT ON THE TWO AFT TENSION LATCHES.
Tension Latch Installation Figure 401 (Sheet 3)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 014-026-N00
(2)
Open the fan cowl panels (AMM 71-11-04/201).
S 014-027-N00
(3)
Open the core cowl panels (AMM 71-11-06/201).
S 014-022-N00
WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(4)
Open the thrust reversers (AMM 78-31-00/201).
D.
Remove the Tension Latches (Fig. 401).
S 034-006-N00
(1) Remove the bolt, washers and nut that attach the tension latch to the thrust reverser structure.
NOTE: You can get access to the fasteners through the holes in the
____
structure near the tension latch.
S 024-007-N00
(2) Remove the tension latch.
TASK 78-31-04-404-008-N00
3. Install the Tension Latches
___________________________
A. References
(1)
AMM 71-11-04/201, Fan Cowl Panels
(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
AMM 78-31-00/201, Thrust Reverser System
(4)
AMM 78-31-04/501, Tension Latches
(5)
IPC 78-31-01 Fig. 22
B.
Access
(1)
Location Zones
416 Engine 1 - Right Thrust Reverser Half
426 Engine 2 - Right Thrust Reverser Half
436 Engine 3 - Right Thrust Reverser Half
446 Engine 4 - Right Thrust Reverser Half
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(2)
Access Panels
413/414 Fan Cowl Panels - Engine 1
417/418 Core Cowl Panels - Engine 1
423/424 Fan Cowl Panels - Engine 2
427/428 Core Cowl Panels - Engine 2
433/434 Fan Cowl Panels - Engine 3
437/438 Core Cowl Panels - Engine 3
443/444 Fan Cowl Panels - Engine 4
447/448 Core Cowl Panels - Engine 4
C.
Install the Tension Latches (Fig. 401).
S 424-028-N00
CAUTION:_______DO NOT APPLY PRESSURE TO THE STRUCTURE AROUND THE LATCH. IF YOU APPLY PRESSURE TO THE STRUCTURE, DAMAGE TO THE STRUCTURE CAN OCCUR.
(1)
Put the tension latch in the correct position on the structure of the thrust reverser.
S 434-010-N00
(2)
Put the countersunk washer below the bolthead and install the bolt.
NOTE: The bolt head must point forward on the forward tension
____ latch, which is near the louvered exhaust door. The bolt head must point aft on the aft tension latches.
S 434-011-N00
(3) Install one to four washers on the bolt to decrease the travel of the bolt in the structure.
NOTE: The tension latches are installed on the thrust reverser
____ structure, which is made of castings. Because of the casting tolerances, the smooth shank of the bolt extends above the surface of the casting. Install sufficient washers (together with the small washer for the nut) on the bolt until you cannot see the shank. Permit a clearance of 0.01 - 0.02 inch
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