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E1(2) FAN PARTS? display. You use the up and down arrow
BITE switches to get the correct balance weight classification.
You push YES to get to the ADD XXX ON XX? display. You use
the up and down arrow BITE switches to adjust the fan hole
selection (XX). Push YES to enter the new data.
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - ENGINE BALANCE PG 3 - TRAINING INFORMATION POINT
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - ENGINE BALANCE PG 3 - TRAINING INFORMATION POINT
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - ENGINE BALANCE PG 3 - TRAINING INFORMATION POINT
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
77-31-00-234
General
You go into the ENGINE TRIM BALANCE to get a one plane (fan
only) or two plane (fan and LPT) balance solution for either
engine. The AVM signal conditioner calculates the solution, and
shows the adjustment in balance weights that you must install
to balance the engine. Always use the procedure in AMM part 2
when you do an engine balance.
For either engine, you may have the AVM signal conditioner
calculate a one plane two plane balance solution. To find a fan
balance solution, push the YES switch at the ONE PLANE? FAN
ONLY display.
The INSTALL ONLY BALANCE? message shows next. The AVM
signal conditioner will attempt to calculate a balance solution if
you push the YES or the NO switch. The calculation takes five to
eight seconds. One of these messages will show immediately if
the AVM signal conditioner can not calculate a solution:
* NO IM-BAL DATA
* NO BAL COEF DATA
* BALANCE LIMIT EXCEEDED
* NO BALANCE FUNCTION.
If you push the YES switch at the INSTALL ONLY BALANCE?
display, the solution calculation ignores the balance parts data,
as if a P07 balance weight is at every location.
If you push the NO switch at the INSTALL ONLY BALANCE?
display, the solution calculation uses the engine balance part
data in AVM nonvolatile memory. The remove fan part data,
which follows the solution, must match the balance weights
actually on the engine. You use the install fan part data and a
table in the AMM, Part 2, to find which balance weights you
need to be remove and install.
The first display of the solution is the fan raw solution. The
weight moment shows in gram-centimeters. The angle shows in
degrees.
The next part of the menu is the remove fan parts section. You
do not see this section if you push the YES switch at the
INSTALL ONLY BALANCE? display. The remove fan parts
section shows the balance weights that you must remove. Push
the NO switch at any time to go back to the ONE PLANE? FAN
ONLY display.
The install fan parts section shows which balance weights you
need to install to balance the engine fan. You must follow the
AMM procedure for proper use of this data. You push the NO
switch at any place in this section of the menu to return to the
ONE PLANE? FAN ONLY display.
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - ENGINE BALANCE PG 4 - TRAINING INFORMATION POINT
EFFECTIVITY
GUN 114 77-31-00
Page 82
D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
77-31-00-236
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - ENGINE BALANCE PG 4 - TRAINING INFORMATION POINT
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - ENGINE BALANCE PG 4 - TRAINING INFORMATION POINT
EFFECTIVITY
GUN 114 77-31-00
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D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
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AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - ENGINE BALANCE PG 4 - TRAINING INFORMATION POINT
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
You go to the TWO PLANE? FAN AND LPT display when you
want the AVM signal conditioner to give you a two plane (fan
and LPT) balance solution for either engine.
General
　
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