*
Push the UP button until the cowl stops moving and you hear the collars lock

*
Make sure the collars on the hold-open rods are locked (a yellow stripe should be visible)

*
Push the DOWN button momentarily to put the fan cowl weight on the hold-open rods.

WARNING: MAKE SURE THE FAN COWL HOLD-OPEN RODS ARE FULLY EXTENDED AND LOCKED WHEN THE FAN COWL PANEL IS OPEN. THE RODS ARE NOT LOCKED WHEN YOU CAN SEE THE RED STRIPE WITH THE WORD "UNLOCKED" ON THE LOCK COLLAR. IF THE RODS ARE NOT LOCKED, THEY COULD RETRACT AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
Close the Fan Cowl
Here is a summary of how you close the fan cowl:
*
Push the UP button to take the fan cowl weight off the hold-open rods

*
Unlock the collars on the hold-open rods (a red stripe should be visible)

*
Push the DOWN button until the fan cowl closes

*
Close the fan cowl latches.

Training Information Point
The fan cowl opens in approximately 20 seconds. When you open the two fan cowls at the same time, it takes approximately 50 seconds.
A single fan cowl closes in approximately 25 seconds. You can close the two fan cowls at the same time.
EFFECTIVITY BEJ ALL  71-12-00 
Page 16 
D633W101-BEJ  May 05/2004 

PW4000 SERIES ENGINES

777 AIRCRAFT MAINTENANCE MANUAL

PDOS -OPERATION -FAN COWL

EFFECTIVITY BEJ ALL  71-12-00 
Page 17 
D633W101-BEJ  Sep 05/2002 

PDOS -OPERATION -THRUST REVERSER

Before you can open the a thrust reverser (T/R) half you must open the necessary fan cowl(s). You must also make sure you do these three tasks:
*
Retract the leading edge slats

*
Deactivate the leading edge slats

*
Deactivate the T/R for ground maintenance.

WARNING: DO NOT MOVE BETWEEN THE ENGINE AND THE OPEN THRUST REVERSER UNTIL YOU INSTALL THE TWO HOLD OPEN RODS. THE THRUST REVERSER IS HEAVY AND CAN FALL CLOSED QUICKLY IF THE PDOS HAS A FAILURE. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
Open the Thrust Reverser
This is a summary of the procedure to open a T/R half:
*
Open the T/R latches

*
Push the UP button for the T/R half

*
Release the UP button when you can get access to the forward hold-open rod

*
Connect the forward hold-open rod to the receiver fitting on the engine fan case

*
Push the UP button until the collar on the forward hold-open rod locks and you can see the yellow stripe

*
Connect the aft hold-open rod to the receiver fitting on the engine (the aft hold-open rod collar locks and you can see the yellow stripe)

* Push the DOWN button to put the weight of the T/R on the hold-open rods.
Close the Thrust Reverser
　
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