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__________ Subtask 75-31-30-941-055
 A. Safety Precautions
 (1) On the center pedestal, on the ENG panel 115VU:

 (a) Put a warning notice to tell persons not to start the engine.

 (2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.

 (3) On the overhead maintenance panel 50VU:

 (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).

 Subtask 75-31-30-010-063
 B. Get Access
 (1) Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (2) Open the thrust reverser doors (Ref. TASK 78-36-00-010-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR

 (3) Put the access platform in position.

 (4) Remove the fan duct panels between the strut at 8 o'clock and the strut at 11 o'clock positions (Ref. TASK 72-23-00-000-027).

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 E E Feb 01/03 E E ECES E 4. Procedure

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_________
 (Ref. Fig. 601/TASK 75-31-30-991-309)
 Subtask 75-31-30-210-051
 A. Visual inspection of the VBV main flexible shaft and of the
 inter-connecting flexible shafts

 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Examine the flexible shaft for damage such as:
 A. Very worn or Not permitted  Replace flexible shaft
 broken wires  (Ref. TASK 75-31-30-000-001) and (Ref. TASK 75-31-30-400-001) or (Ref. TASK 75-31-30-000-002) and (Ref. TASK 75-31-30-400-002).
 B. Spacing between Not permitted  Replace flexible shaft
 wires  (Ref. TASK 75-31-30-000-001) and (Ref. TASK 75-31-30-400-001) or (Ref. TASK 75-31-30-000-002) and (Ref. TASK 75-31-30-400-002).
 Subtask 75-31-30-220-051
 B. Do a dimensional check of the main and inter-connecting flexible shaft hexagonal end for wear damage as follows:
 (1) Measure dimension A (accross flats). Dimension A must be 0.350 in. (8.89 mm) minimum. Replace the shaft if dimension A measures less than this minimum value (Ref. TASK 75-31-30-000-001) and (Ref. TASK 75-31-30-400-001) or (Ref. TASK 75-31-30-000-002) and (Ref. TASK 75-31-30-400-002).
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 Inspection of the VBV Main Flexible Shaft and of the Inner Connecting Flexible

 Shaft
 Figure 601/TASK 75-31-30-991-309
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 (2) Measure dimension B (across hexagon corners)

 PRE SB CFM56-5B 72-0119
 Dimension B must be 0.370 in. (9.40 mm) minimum.
 END OF PRE SB CFM56-5B 72-0119
 POST SB CFM56-5B 72-0119
 Dimension B must be 0.385 in. (9.78 mm) minimum.
 END OF SB CFM56-5B 72-0119
 Replace the shaft if dimension B measures less than this minimum value (Ref. TASK 75-31-30-000-001) and (Ref. TASK 75-31-30-400-001) or (Ref. TASK 75-31-30-000-002) and (Ref. TASK 75-31-30-400-002).
 5. Close-up
________
 Subtask 75-31-30-410-059
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 (2) Install of the fan duct panels (Ref. TASK 72-23-00-400-027).

 (3) Close the thrust reverser cowl doors (Ref. TASK 78-36-00-410-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR

 (4) Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (5) Remove the access platform(s).

 (6) Remove the warning notice(s).

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