H.
Engine Ignition
S 842-025-C00
WARNING: THE ENGINE IGNITION SYSTEM IS AN ELECTRICAL SYSTEM WITH
_______ HIGH ENERGY. YOU MUST BE CAREFUL TO PREVENT ELECTRICAL SHOCK. INJURY OR DEATH CAN OCCUR TO YOU. DO NOT DO MAINTENANCE ON THE IGNITION SYSTEM WHEN YOU OPERATE THE ENGINE.
OPEN THE CIRCUIT BREAKERS FOR THE IGNITION SYSTEM TO DEACTIVATE THE IGNITION SYSTEM. WAIT FOR FIVE MINUTES OR MORE BEFORE YOU CONTINUE.
(1)
You must take precautions when you work on the engine ignition system.
I.
Engine Fuel and Lubrication Oils
S 842-026-C00
(1)
All the fuels, lubrication oils, and hydraulic fluids will make your skin dry.
(a)
Do not let these fluids touch your skin.
TASK 71-00-00-842-141-C00
4. Power Plant Operation Limitations
_________________________________
A. Starter Operation Limitations
S 842-027-C00
(1)
Each engine starter is supplied with low pressure air to start and motor the engine.
S 842-028-C00
(2)
This low pressure air is supplied through the airplane pneumatic system from three sources:
(a)
Air from an engine that is in operation.
(b)
Ground vehicles with low pressure, air supply units.
(c)
The airplane auxiliary power unit (APU).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
71-00-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 842-029-C00
(3) Usual starter cycle.
(a)
Use the starter continuously for two minutes, close the start valve, and do not use the starter again until the N2 speed decreases to zero. Wait for 20 seconds with zero N2.
(b)
Use the starter again for two minutes, close the start valve, and permit the N2 speed to decrease to zero.
(c)
Let the starter become cool for three minutes.
S 842-031-C00
CAUTION: DO NOT ENGAGE THE STARTER AGAIN AT N2 SPEEDS MORE THAN 20%.
_______
DAMAGE TO THE STARTER CAN OCCUR.
(4) Starter engagement speeds.
~............................................................. | N2 SPEED | STARTER ENGAGEMENT | ............................................................... | 0% N2 | RECOMMENDED | ............................................................... | 0-10% N2 | PERMITTED | ............................................................... | 10-20% N2 | PERMITTED TO PURGE FUEL OR CLEAR A FIRE | ............................................................... | MORE THAN 20% N2 | NOT RECOMMENDED FOR ALL REASONS | 2..................…..........................................1
B. Engine Operation Limitations (Fig. 204, 205, 206)
S 842-032-C00
(1)
The recommended engine operation conditions and limits are given in Fig. 204.
(2)
Engine oil pressure to N2% rpm data is shown in Fig. 205.
S 842-034-C00
(3)
The relative wind data during engine part power trim runs is shown in Fig. 206.
S 842-033-C00
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú C03 Page 227 ú Nov 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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本文鏈接地址：737-300 400 500 AMM 飛機維護手冊 動力裝置 POWER PLANT 1(18)
