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 (2)  Remove a pair of fan blades (Fig. 401).
 (a)  
Turn the fan blade with your hand until the blade is in the 12 o'clock position.

 (b)  
Remove the spinner front and rear cones (AMM 72-31-01/401).

 (c)  
Move the spacer forward until you can release the retainer.

 NOTE: If it is necessary, use the puller adapter, slide
____
 hammer, and rod.

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////

Replacement of Fan Blades in Pairs
Figure 401

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E03304
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FAN
SEE

ENGINES WITHOUT REBROACHED FAN DISK
NOTE: DO NOT USE BLACK SPACER 
B
S-M56-MM-0960-(1)-00-B
Fan Blade Installation
Figure 402 (Sheet 1)

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CFM56 ENGINES
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ENGINES WITH REBROACHED FAN DISK

NOTE: DO NOT USE GREEN OR WHITE SPACER
S-M56-MM-00961-03-B
Fan Blade Installation
Figure 402 (Sheet 2)

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
BLADES YOU WILL MACHINED MARK/INDEX FOR THE NO. 1 FAN BLADE
REMOVE:
NO. 1-3-38-35

OPPOSITE BLADES:
NO. 20-22-19-16

9 31
10 30
11 29

19 21
20
VIEW IN THE AFT DIRECTION
BLADES REMOVED/ MOMENT-WEIGHT (G.INCH) NO. 1-20 31849 31804 D1 = 45  NEW BLADES/ MOMENT-WEIGHT (G.INCH) 31445 31405 D'1 = 40  F1 = 5 WILL PERFORM = CORRECTION YOU DIFFERENCE D-D' (G.INCH)  DIRECTION (BLADE NO.) OF CORRECTION D1 > D'1 BLADE NO. 1 
NO. 19-38 
D2 = 4032545 32505  D'2 = 531628 31623  F2 = 35  D2 > D'2 BLADE NO. 19 
NO. 22-3 
D3 = 3030940 30910  D'3 = 532735 32730  F3 = 25  D3 > D'3 BLADE NO. 22 
NO. 35-16 
31340 31335 D4 = 5  30348 30303 D'4 = 45  F4 = 40  D4 < D'4 BLADE NO. 16 

S-M 56-MM-0965-(1)-02-B
Static Imbalance Correction Example (Fan Blade Pair Replacement) Figure 403 (Sheet 1)
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 ú  C01  Page 406
 ú  Jul 15/96 

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
MACHINED MARK/INDEX FOR THE NO. 1 FAN BLADE
9 31 10

30 11
29 12 28
VIEW IN THE AFT DIRECTION

　
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