777 AMM 飞机维护手册 动力装置 Power Plant PW 777 AIRCRAFT MAINTENANCE MANUAL(15)

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Hoist Points
The inlet cowl has eight hoist points. There are five hoist points on the upper inlet assembly and three on the lower inlet assembly.
Training Information Point
You can separate the upper and the lower halves of the inlet cowl assembly to move it. But the upper and lower inlet cowl halves are matched sets. They are not interchangeable with other inlet cowl halves.
EFFECTIVITY BEJ ALL  71-11-00 
Page 6 
D633W101-BEJ  Sep 05/2002 

PW4000 SERIES ENGINES

777 AIRCRAFT MAINTENANCE MANUAL

ENGINE COWLING -INLET COWL

EFFECTIVITY BEJ ALL  71-11-00 
Page 7 
D633W101-BEJ  Sep 05/2002 

ENGINE COWLING -FAN COWL

Each engine has two fan cowls. The fan cowls let air flow smoothly around the engine. The fan cowls open for maintenance.
Physical Description
Each fan cowl panel has four hinges. They attach to the fan cowl support beam on the fan case. Each hinge has a quick release pin. The cowls are graphite-epoxy structures. The inboard fan cowl panels have a chine at the 10:00 position. The fan cowl chine controls the airflow direction over part of the wing.
Each fan cowl also has a static pressure (Pamb) port near the bottom of the cowl. A static pressure sense line sends a Pamb signal to the electronic engine control (EEC).
An oil tank access door and a sight glass access/pressure relief door are on the left fan cowl panel of each engine. You service the engine oil tank through the oil tank access door. You do a check of the oil level through the sight glass/pressure relief door.
You can remove each fan cowl panel with a sling that attaches at three hoist points.
Hold-Open Rods
Each fan cowl has a forward and an aft hold-open rod. The rods are telescopic. One end of the hold-open rod attaches to a bracket on the engine fan case. The other end attaches to fittings on the fan cowl.
Each hold-open rod has a locking collar. The collar locks the hold-open rod in place. When you can see the yellow stripe next to the collar, it is locked.
Fan Cowl Opening Actuator
You use the PDOS to open and close the fan cowls. Each engine has two fan cowl opening actuators. One fan cowl opening actuator attaches to a bracket on each fan cowl and to the fan case. The fan cowl opening actuators open and close the fan cowls with hydraulic power.
Fan Cowl Panel Latches
There are four adjustable fan cowl panel latches at the bottom of the cowls. The latches hold the left and right fan cowl panels together.
EFFECTIVITY BEJ ALL  71-11-00 
Page 8 
D633W101-BEJ  Sep 05/2002 

PW4000 SERIES ENGINES

777 AIRCRAFT MAINTENANCE MANUAL

ENGINE COWLING -FAN COWL

EFFECTIVITY BEJ ALL  71-11-00 
Page 9 
D633W101-BEJ  Sep 05/2002 
　
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