~............................................. | TABLE 506 | | AVM Front Panel Display | ............................................... | n n n n / y y y | | | | m m m m / z z z | | | | A A A F X ? | 2.............................................1 1) nnn - the fan balance weight solution in (gm-cm) 2) yyy - the fan balance weight position (in degrees) 3) mmmm - the LPT balance weight solution (in gm-cm) 4) zzz - the LPT balance weight position (in degrees) 5) AAA - the identifier of the uploadable parameter set (A00
to A99) 6) FX - the flight number (0 to 5, with 0 the last flight or trim balance run recorded)
(d) Push and release the YES button. This causes the BALANCE IN PROGRESS screen to show.
NOTE: If you push and release the NO button, the BAL FOR
____ ENGINE 2? screen will show (if the engine 1 menu was on) or the display will go off (if the engine 2 menu was on).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
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(e) After a short time, one of these four screens will show on the display. The screen that is shown depends on the solution found. 1) If the SOLUTION FOUND DISPLAY? screen shows, there is a balance solution to balance the fan.
2) If the WEIGHT LIMIT EXCEEDED screen shows, the balance solution value calculated is too large to install on the fan.
NOTE: To exit this menu, push and release the NO
____ button. The BAL FOR ENGINE 2? screen will show (if the engine 1 menu was on) or the display will go off (if the engine 2 was on).
3) If the NO CHANGE REQUIRED screen shows, the balance solution that is currently installed is satisfactory.
NOTE: To exit this menu, push and release the NO
____ button. The BAL FOR ENGINE 2? screen will show (if the engine 1 menu was on) or the display will go off (if the engine 2 was on).
4) If the NO IMBAL DATA ACQUIRED screen shows, there was a problem and the balance solution was not calculated.
NOTE: To exit this menu, push and release the NO
____ button. The BAL FOR ENGINE 2? screen will show (if the engine 1 menu was on) or the display will go off (if the engine 2 was on).
a) If the inflight data does not give a balance solution, do the alternate acceleration procedure (AMM 71-00-00 (AMM 71-00-00/501, Test 7, Vibration Survey), then do this procedure again.
NOTE: The alternate procedure will run the engine
____ at increasing N1 speed intervals to help get the data necessary to plot a balance solution.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú C09 Page 582L ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
5) Push and release the YES button. This causes this screen to show (Table 507).
NOTE: The screen that shows gives the balance weight
____ and its location that are necessary to balance the fan. The definitions of the screen are given below.
NOTE: Use the UP and DOWN ARROW buttons to get the
____ imbalance weights that are necessary for the other holes on the fan (1 to 8). To exit this screen, push and release the NO button and the DISPLAY SOLUTION AGAIN? screen will show.
~.............................................
| TABLE 507 |
| AVM Front Panel Display |
...............................................
| E 1 H o l e X X |
| |
| R e m P O X |
| |
| I n s t P O Y |
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