(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
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
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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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