ENGINE COWLING -FAN COWL HOLD-OPEN RODS
General
* Unlock the hold-open rods The fan cowl hold-open rods keep the fan cowls open for * Use the PDOS to close the fan cowl maintenance. The hold-open rods are also a safety device. They * Close the fan cowl panel latches from forward to aft.
protect persons at work on the engine or at work on the fan cowl from injury. They prevent the accidental closure of the fan cowl.
Fan Cowl Hold-Open Rods
Each fan cowl has a forward and an aft hold-open rod. The rods are telescopic. The rods stay attached to the fan case and fan cowl when you open and close the fan cowl
Each hold-open rod has a locking collar. The locking collars lock the hold-open rods. When you can see the red stripe next to the collar, the hold-open rod is not locked. When you can see the yellow stripe next to the collar, the hold-open rod is locked.
Fan Cowl Opening
This is a summary of how you open the fan cowl:
*
Open the fan cowl panel latches from aft to forward
*
Use the PDOS to open the fan cowl
*
The hold-open rods automatically extend and lock.
Make sure the hold-open rod collars are locked (yellow stripes visible) before you go under the fan cowl.
Fan Cowl Closing
This is a summary of how you close the fan cowl:
EFFECTIVITY BEJ ALL 71-11-00
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PW4000 SERIES ENGINES
777 AIRCRAFT MAINTENANCE MANUAL
ENGINE COWLING -FAN COWL HOLD-OPEN RODS
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ENGINE COWLING -THRUST REVERSER
The thrust reverser controls the direction of the fan exhaust. It makes forward or reverse thrust. Reverse thrust can decrease the speed of the airplane during landing rollout, or rejected take-off. The surface of the thrust reverser lets air flow smoothly around the engine. The thrust reverser halves open for maintenance.
Physical Description
Each thrust reverser has a left and right half. Each thrust reverser half has a hinge beam with four hinges. The two middle hinges attach to the engine strut. The These hinges hold the thrust reverser half to the engine strut and let the thrust reverser rotate to an open or close position. The two hinges on each end attach to the opposite thrust reverser half with a hinge cross tie rod. The tie rods supply strength to the reverser half at the forward and aft ends.
Sling Attach Points
The sling attach points for the thrust reverser are on the hinge beam and the latch beam. You put bolts into nutplates on the hinge beam and on the latch beam to attach a sling.
EFFECTIVITY BEJ ALL 71-11-00
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D633W101-BEJ Sep 05/2002
PW4000 SERIES ENGINES
777 AIRCRAFT MAINTENANCE MANUAL
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