(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
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B. Get Access
(1) Open the fan cowls doors: (Ref. TASK 71-13-00-010-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR.
(2) Put the access platform in position. Subtask 72-52-00-040-054
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 72-52-00-010-059
D. Open the thrust reverser cowl doors (Ref. TASK 78-36-00-010-040):
FOR 1000EM1
451AL, 452AR
FOR 1000EM2
461AL, 462AR.
4. Procedure
_________
(Ref. Fig. 601/TASK 72-52-00-991-304, 602/TASK 72-52-00-991-300, 605/TASK
72-52-00-991-305, 606/TASK 72-52-00-991-306, 609/TASK 72-52-00-991-307) Subtask 72-52-00-290-054
A. Prepare for inspection:
(1) Use the MONITOR, RESOLUTION BORESCOPE (856A1323G01) to make sure the borescope and the light source are serviceable. See the Non-Destructive Test Manual for this procedure (Ref. NTM 72-00-00).
(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)).
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High-Pressure Turbine Blade (Only Applicable /P Engines)
Figure 609/TASK 72-52-00-991-307
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(a) To turn the core manually with a breaker bar, do the steps that follow:
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).
(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).
_ 2 Install the MOTOR, DRIVE - CORE ENGINE ROTATION (856A1488 P01
_ or 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.
NOTE : The tool must be installed in the horizontal position
____ with the air hoses to the rear.
3 Turn the tool until the captive bolts align with the gearbox
_
bolt holes.
4 Tighten the two captive bolts by hand.
_
5 Install the clamp to secure the drive motor.
_
6 Attach the foot or hand control air hoses to the quick
_
disconnects on the tool.
7 Connect the air supply to the drive motor. The air supply must
_ be capable of 100 psi (6.9 bar). The air supply must be lubricated and filtered at 6 SCFM (170 L/minute).
(3) Remove either one of the spark igniters (Ref. TASK 74-21-30-000-002).
(4) Install the protective caps on the lead and the spark igniter.
(5) Put the KIT, BORESCOPE GUIDE - HP TURBINE (856A1310G01) over the straightening rod.
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(6) Push the plastic guide tube and straightening rod into the combustion chamber through the spark igniter port (S10 or S11) as far as it will go.
(7) Turn the pointed tab on the plastic guide tube to the rear of the engine and remove the straightening rod from the plastic guide tube.
(8) Installation of the borescope:
CAUTION : FOLLOW THE INSTRUCTIONS CAREFULLY FOR INSERTING OR REMOVING
_______ THE FLEXIBLE BORESCOPE. DOING THE PROCEDURE INCORRECTLY WILL DAMAGE THE TIP CONTROL FUNCTION.
(a) Connect the fiber light cable to the FIBERSCOPE SET (856A1321 P01 or P03) to the BORESCOPE - LIGHT SOURCE SET (856A1322 P03, P04 or P07).
(b) Align the borescope lens with one of the plastic tabs on the guide tube and install it into the tube. Make sure that the borescope tip is not moved up or down when putting it into the plastic guide tube. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM ENGINE 发动机 2(70)
