B.
References
(1)
71-11-04/201, Fan Cowl Panels
C.
Access
(1)
Location Zone 415 and 416 Engine 1 - Thrust Reverser Halves 425 and 426 Engine 2 - Thrust Reverser Halves 435 and 436 Engine 3 - Thrust Reverser Halves 445 and 446 Engine 4 - Thrust Reverser Halves
(2)
Access Panel
413 and 414 Fan Cowl Panels - Engine 1
423 and 424 Fan Cowl Panels - Engine 2
433 and 434 Fan Cowl Panels - Engine 3
443 and 444 Fan Cowl Panels - Engine 4
D.
Adjust the Latch Force for the Latch Band (Fig. 501).
(1)
Open the fan cowl panels (Ref 71-11-04/201).
(2)
Open the T-bolt latch handle.
S 015-002-N00
S 015-006-N00
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
LATCH BAND T-BOLT RECEIVER
SEE A
BSEE T-BOLT LATCH HANDLE T-BOLT LATCH
A ENGAGED T-BOLT
LATCHED AND LOCKED
STOWED POSITION
Latch Band Adjustment Figure 501 B
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S 225-010-N00
CAUTION:_______ MAKE SURE THE T-BOLT IS CORRECTLY ENGAGED IN THE RECEIVER OF
THE VEE-GROOVE LATCH BAND BEFORE YOU CLOSE THE T-BOLT LATCH
HANDLE. FAILURE TO OBEY THIS INSTRUCTION CAN CAUSE DAMAGE TO
THE T-BOLT OR THE RECEIVER ON THE VEE-GROOVE LATCH BAND.
(3)
Use the spring scale to measure the force you must use to close the T-bolt latch handle.
S 825-008-N00
(4)
To adjust the latch force, turn the T-bolt clockwise into the latch mechanism or counterclockwise out of the latch mechanism.
NOTE: Adjust the T-bolt until you must use 40-60 pounds of force to
____ close the T-bolt latch handle.
S 415-004-N00
(5) Close the fan cowl panels (Ref 71-11-04/201).
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LATCH BAND - INSPECTION/CHECK
_____________________________
1. General
_______
A. This procedure has two tasks:
(1)
The first task examines the latch ring assembly.
(2)
The second task examines the thrust reverser torque box.
TASK 78-31-02-206-000-N00
2. Latch Band Inspection
_____________________
A. References
(1)
AMM 71-11-04/201, Fan Cowl Panels
(2)
AMM 78-31-02/401, Thrust Reverser Latch Bands
(3)
AMM 78-31-02/501, Thrust Reverser Latch Bands
(4)
SRM 54-30-90, Fan Duct Cowl Attachment Fitting Allowable Damage
B.
Access
(1)
Location Zones 415 and 416 Engine 1 - Thrust Reverser Halves 425 and 426 Engine 2 - Thrust Reverser Halves 435 and 436 Engine 3 - Thrust Reverser Halves 445 and 446 Engine 4 - Thrust Reverser Halves
(2)
Access Panels
413 and 414 Fan Cowl Panels - Engine 1
423 and 424 Fan Cowl Panels - Engine 2
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