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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////

WEAR LOCATIONS WEAR LOCATIONS
(LOWER AUXILIARY TRACK BEAM) (UPPER AUXILIARY TRACK BEAM)

WEAR LOCATIONS
(EXAMPLE)

LEGEND

WEAR LOCATIONS
Thrust Reverser Auxiliary Track Liner Inspection
Figure 601 (Sheet 2)

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G83302
2) Clean and alodine finish worn areas of the auxiliary track. 3) Install a new aux track liner (AMM 78-31-11/401). 4) Fill in worn areas of the aux track beam.
 a) Apply BMS5-28, type 25 or type 6 potting compound under
 the outside edge of the aux track liner. b) Remove the excess potting before it becomes hard. c) Let the potting compound dry before you replace the aux
 track slider. 5) Install a new aux track slider (AMM 78-31-13/401). 6) Do the thrust reverser functional test two times
 (AMM 78-31-00/501). 7) Do the visual inspection of the aux track and aux track slider (AMM 78-31-11/601).
 NOTE:____If there are any problems, correct them and do the thrust reverser functional test again.
 (e)  
If dimension B is less than 0.100 inches and dimension E is less than or equal to 0.080 inches, replace the aux track beam (CMM 78-11-56).

 (f)  
If dimension B is less than 0.100 inches and dimension E is between 0.080 and 0.140 inches, repair the aux track beam (AMM 78-31-11/801).

 E. Put the Airplane Back to Its Usual Condition
 S 416-048-N00
 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.
 (1) Manually retract the thrust reverser sleeve (AMM 78-31-00/201).
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THRUST REVERSER AUXILIARY TRACK BEAM - APPROVED REPAIR
______________________________________________________
 1.  General
_______
 A.  This procedure gives instructions to repair worn thrust reverser
 auxiliary track beam assembly.

 TASK 78-31-11-308-033-N00
 2.  Repair the Thrust Reverser Auxiliary Track Beam
_______________________________________________
 A.  References
 (1)
AMM 78-31-00/201, Thrust Reverser System

 (2)
AMM 78-31-11/401, Thrust Reverser Track Liner

 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
　
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