Static Imbalance Correction Example
(Fan Blade Pair Replacement)
Figure 403 (Sheet 2)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
BALANCE SCREW
SPINNER REAR CONE PO6 PO5 PO4 PO3
PO7 = INITIAL BALANCE SCREW
PO2 PO1
PO7
BALANCE SCREW
PO# MARKED ON
TOTAL LENGTH
WEIGHT
M.W.* SOCKET HEAD PO#
GRAMSIN.
MM GR-CM
PO7 0.8
20.3
6.6
0.0 PO1
1.3
33.0
10.0
79
THREADS
PO2 1.8
45.7
13.4
152 TOTAL
PO3 2.3
58.4
16.8
224 LENGTH
PO4 2.8
71.1
290 PO5
20.2
3.3
83.8
350 P06
23.6
3.8
96.5
27.4
408
* EFFECTIVE MOMENT WEIGHT (MOMENT WEIGHT MINUS MOMENT WEIGHT OF SCREW PO7)
S-M56-MM-0982-(1)-01-BFan Rotor Blade Balance Screw Identification Figure 404
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////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
ON RESULTANT IMBALANCE BALANCE WEIGHT CENTERED
21 3 4 5 SCREW TYPE 6 987 QUANTITY SCREW WEIGHT GM-INCH ACTUAL BALANCE
GM-CM GM-INCH
P01 1 79 31
P02 1 152 60
P03 1 224 88
P01 P01 P01 3 235 92.5
P04 1 290 114
P01 P02 P01 4 310 122
P05 1 350 137.8
P02 P01 P02 3 381 150
P06 1 408 161
P02 P02 P02 3 455 179
P01 P05 P01 3 506 199
P02 P03 P02 3 526 207
P01 P06 P01 3 569 224
P03 P02 P03 3 595 234
P04 P01 P04 3 653 257
P03 P03 P03 3 666 262
P02 P06 P02 3 714 281
P03 P04 P03 3 732 288
P05 P01 P05 3 767 302
P03 P05 P03 3 790 311
P05 P02 P05 3 841 331
P04 P04 P04 3 864 340
P06 P01 P06 3 894 352
P05 P04 P05 3 978 385
P05 P05 P05 3 1036 408
P05 P06 P05 3 1100 433
P06 P06 P06 3 1212 477
P02 P06 P03 P06 P02 5 1316 518
P04 P03 P06 P03 P04 5 1396 550
P05 P03 P06 P03 P05 5 1511 595
P06 P03 P06 P03 P06 5 1620 638
P05 P05 P05 P05 P05 5 1697 668
S-M56-MM-0969-03-B Fan Rotor Blade Balance Screw Selection
Figure 405
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 ENGINE 发动机 1(132)
