S 217-101-N00
(29)
Do an inspection of the turbine vane and blade cooling air valve air (PS3) filter elements (AMM 75-33-05/201).
S 447-048-N00
(30)
Do the activation procedure for the thrust reversers (AMM 78-31-00/201).
TASK 72-00-00-107-026-N00
3. Engine Gaspath Cleaning After the Fire Extinguishing Agents are Used
____________________________________________________________________
(Continue-In-Service)
_____________________
A. General
(1)
This procedure gives the steps to prepare the engine to be used after fire extinguishing agents were used.
(2)
In this procedure, the turbine vane and blade cooling air will be referred to as the TVBCA.
B.
References
(1)
AMM 70-42-05/201, Engine Contamination (SPOP 425)
C.
Remove the Remaining Fire Extinguishing Powder from the Engine
S 167-172-N00
(1) If necessary, clean the engine to remove fire extinguishing agents by SPOP 425 (AMM 70-42-05/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TASK 72-00-00-107-045-N00
4. Engine Gaspath Cleaning After the Fire Extinguishing Agents are Used____________________________________________________________________ (Before the Engine Removal)___________________________
A. General
(1)
This procedure gives the steps to prepare for the removal of the engine after fire extinguishing agents were used. The engine will be disassembled and cleaned after the removal. If you will continue to use the engine and will not remove it, do this procedure: Engine Gaspath Cleaning After the Fire Extinguishing Agents are Used (Continue-In-Service).
B.
References
(1)
AMM 70-42-05/201, Engine Contamination (SPOP 425)
C.
Remove the Remaining Fire Extinguishing Powder from the Engine
S 867-173-N00
(1) If no more damage to the engine can occur when you motor the engine, use the Power Plant Dry-Motor procedure to lower the EGT to 932°F (500°C) or less.
NOTE: After a dry chemical powder type of fire extinguishing agent
____ is used, it is recommended when it is possible that you motor the engine (know the time limits of the starter when you motor the engine and degree of engine damage). The engine is motored to lower the EGT as quickly as possible and to blow the remaining powder from the engine.
S 167-174-N00
(2) If necessary, clean the engine to remove fire extinguishing agents by SPOP 425 (AMM 70-11-10/201).
TASK 72-00-00-107-097-N00
5. Clean the Engine Pressure Ratio (EPR) PT4.95 Probes (Pressure Sensing Holes)____________________________________________________________________________
A. General
(1)
In this procedure the Engine Pressure Ratio (EPR) PT4.95 Probes (Pressure Sensing Holes) will be referred to as the EPR PT4.95 probes.
B.
Standard Tools and Equipment
(1)
Pump - PWA 86453
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(2)
Adapter - Pump, PWA 86457 (PRE-PW-SB 72-134)
(3)
Adapter - Pump, PWA 86458 (Post-PW-SB 72-134)
(4)
M303, M305 or M307 Bergen Mechanical Crimper
Bergen Cable Technologies Inc
170 Gregg St
P.
O. 1300
Lodi, NJ 07644-9982
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本文鏈接地址：747-400 AMM 飛機維護手冊 發(fā)動機 ENGINE 1(104)
