78-31-11
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
TASK 78-31-11-206-049-N00
3. Thrust Reverser Aux Track Liners and Aux Track Beam - Inspection/Check
__________________________________________________________________________
A. References
(1)
AMM 78-31-10/401, Thrust Reverser Sleeve
(2)
AMM 78-31-11/401, Thrust Reverser Track Liner
(3)
AMM 78-31-13/601, Thrust Reverser Aux Track Slider
B.
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 Panels 415A and 416A Engine 1 - Thrust Reverser Actuator 415B and 416B Engine 1 - Thrust Reverser Actuator 415C and 416C Engine 1 - Thrust Reverser Actuator 425A and 426A Engine 2 - Thrust Reverser Actuator 425B and 426B Engine 2 - Thrust Reverser Actuator 425C and 426C Engine 2 - Thrust Reverser Actuator 435A and 436A Engine 3 - Thrust Reverser Actuator 435B and 436B Engine 3 - Thrust Reverser Actuator 435C and 436C Engine 3 - Thrust Reverser Actuator 445A and 446A Engine 4 - Thrust Reverser Actuator 445B and 446B Engine 4 - Thrust Reverser Actuator 445C and 446C Engine 4 - Thrust Reverser Actuator 417 and 418 Engine 1 - Core Cowl Panels 427 and 428 Engine 2 - Core Cowl Panels 437 and 438 Engine 3 - Core Cowl Panels 447 and 448 Engine 4 - Core Cowl Panels
C.
Prepare to do the Inspection of the Aux Track Liners and Aux Track Beams.
S 016-050-N00
WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO MANUALLY EXTEND
_______ THE THRUST REVERSER SLEEVE. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(1)
Manually extend the thrust reverser sleeve (AMM 78-31-00/201).
D.
Do the Inspection of the Aux Track Liners and Aux Track Beams.
S 216-043-N00
(1) Examine the auxiliary thrust reverser track sliders
(AMM 78-31-13/601).
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78-31-11
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
A-A
Thrust Reverser Auxiliary Track Liners Inspection Figure 601 (Sheet 1)
G83300
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 216-044-N00
(2) Examine the Aux Track Liners and Aux Track Beams for damage.
NOTE:____ Use a flashlight and a mirror to do the inspection.
S 216-045-N00
(3) If there is no visible wear to Aux Track Liners, Aux Track Beams or auxiliary slider fittings then no further action is required. (a) Put the Airplane Back to Its Usual Condition.
WARNING:_______ OBEY THE INSTRUCTIONS IN THE PROCEDURE TO MANUALLY RETRACT THE THRUST REVERSER SLEEVE. IF YOU DO NOT OBEY THE
INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(b) Manually retract the thrust reverser sleeve (AMM 78-31-00/201).
S 896-046-N00
(4) If only the Aux Track Liners are worn or gouged anywhere along their length, replace the liner (AMM 78-31-11/401).
S 226-052-N00
(5) If the aux track beam is worn, gouged or damaged, do a detailed inspection of the beam. (a) Keep the liner in position and measure dimension A (Fig. 601). 1) Use a T-Type snap gage and a micrometer to make detailed measurements every 4 inches of the aux track beam. (b) If dimension A is greater than or equal to 0.450 inches anywhere on the aux track beam, do the steps that follow: 1) Remove the aux track liner (AMM 78-31-11/401). 2) Remove the aux track slider (AMM 78-31-13/401). (c) Measure every 2 inches along the aux track beam for dimension B, C, D in Fig. 601. (d) If dimension B is less than 0.100 inches and dimension E is greater than or equal to 0.140 inches then repair the aux track beam with the steps that follow. 1) Remove sharp edges of the worn areas.
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