Subtask 72-31-00-010-055
R B. Open the fan cowl doors: (Ref. TASK 71-13-00-010-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR.
 Subtask 72-31-00-040-052
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 72-31-00-010-056
 D. Open the thrust reverser doors (Ref. TASK 78-36-00-010-040):
 FOR 1000EM1
 451AL, 452AR
 FOR 1000EM2
 461AL, 462AR.

 4. Procedure
_________
 (Ref. Fig. 601/TASK 72-31-00-991-300, 602/TASK 72-31-00-991-301, 603/TASK 72-31-00-991-302, 604/TASK 72-31-00-991-309, 605/TASK 72-31-00-991-306, 606/TASK 72-31-00-991-307, 607/TASK 72-31-00-991-308, 608/TASK 72-31-00-991-310)
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 Core Rotation Drive Motor Installation
 Figure 601/TASK 72-31-00-991-300

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 VSV System Connections at the HMU
 Figure 602/TASK 72-31-00-991-301

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R  Borescope Ports of the High-Pressure Compressor Figure 603/TASK 72-31-00-991-302
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R  Removal of IGV Borescope Plug (S1) Figure 604/TASK 72-31-00-991-309
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R  HPC Rotor Indexing to Zero Figure 605/TASK 72-31-00-991-306
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 Locally Manufactured Alignment Rod
 Figure 606/TASK 72-31-00-991-307

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 Locally Manufactured Deep Socket Wrench
 Figure 607/TASK 72-31-00-991-308
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R  Compressor Blades Inspection Figure 608/TASK 72-31-00-991-310- 13 (SHEET 1)
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R  Compressor Blades Inspection Figure 608/TASK 72-31-00-991-310- 23 (SHEET 2)
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R  Compressor Blades Inspection Figure 608/TASK 72-31-00-991-310- 33 (SHEET 3)
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 A. Do a borescope installation:
 (1) Use the MONITOR, RESOLUTION BORESCOPE (856A1323G01) to make sure that the borescope or fiberscope and light source are serviceable. See the Non-Destructive Test Manual for this procedure (Ref. NTM 720000).

 (2) Install the tools to turn the core engine. NOTE : The core engine may be turned using a breaker bar (see step

____ (a)) or with a drive motor (see step (b)).
 (a) To turn the core manually with a breaker bar, do the steps that follow:

 (b) To turn the core with a drive motor, do the steps that follow: 1 Remove the starter (Ref. TASK 80-11-10-000-002).

 1_ Remove the handcranking drive cover from the core rotation pad
 on the left side of the accessory gearbox (AGB), opposite the
 starter. (Ref. TASK 72-63-00-000-002)
 2_ Install a 0.75 in. square drive socket with a 2ft. long
 breaker bar into the handcranking drive pad. When you do the
 borescope inspection, turn the core engine clockwise (CW, aft
 looking forward).
 NOTE : To turn the core engine CW, the handcranking drive must____
 be turned counterclockwise (CCW).

_ 2 Install the MOTOR, DRIVE - CORE ENGINE ROTATION
_ (856A1488P0/P02) into the accessory gearbox (AGB) starter drive pad. Align the drive shaft of the drive motor with the starter drive pad drive shaft and engage the splines.
　
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