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

*
Disconnect and stow the hold-open rods

*
Operate the DOWN button until the T/R half closes.

*
Close the T/R latches.

Training Information Point
A T/R half opens in approximately 40 seconds. When you open the two T/R halves at the same time, it takes approximately 100 seconds. A T/R half closes in approximately 25 seconds. You can close the two T/R halves at the same time.
If the aft hold-open rod does not lock when you open the T/R, push the UP button to move the T/R a very short distance. The aft hold-open rod collar will lock and you will see the yellow stripe.
When you open the right T/R half you must open the left and right fan cowls. This is because the v-band latch handle will hit left fan cowl panel if the cowl is not open.
EFFECTIVITY BEJ ALL  71-12-00 
Page 18 
D633W101-BEJ  May 05/2004 

PW4000 SERIES ENGINES

777 AIRCRAFT MAINTENANCE MANUAL

PDOS -OPERATION -THRUST REVERSER

EFFECTIVITY BEJ ALL  71-12-00 
Page 19 
D633W101-BEJ  Sep 05/2002 

PDOS -MANUAL OPERATION

When there is no airplane power you use the manual drive lug and the solenoid valves on the PDOS pump/power pack to open and close the fan cowls and the thrust reverser (T/R) halves. A decal on the pump/power pack shows the manual operation procedures.
The manual drive lug uses a 3/8 inch square drive.
Open the Fan Cowl and Thrust Reverser
This is a summary of the procedure to open a fan cowl or T/R half:
*
Use a flat-blade screwdriver to set the solenoid valves to the positions to open the related cowl

*
Turn the manual drive lug

*
When the cowl is open and the hold-open rods lock, set the solenoid valves to the positions to close the related cowl

*
Push and hold the V5 solenoid valve to put the weight of the cowl on the hold-open rods

*
Put the solenoid valves back to their initial positions.

Close the Fan Cowl and Thrust Reverser
This is a summary of the procedure to close a fan cowl or T/R half:
* Use a flat-blade screwdriver to set the solenoid valves to the positions to open the related cowl
*
Turn the manual drive lug to move the cowl up and then unlock the hold-open rods

*
Set the solenoid valves to the positions to close the related cowl

*
Push and hold the V5 solenoid valve to close the cowl

*
Put the solenoid valves back to their initial positions.

Training Information Point
The pump/power pack is approximately 14 ft. (4.3m) from the ground. There is a safety harness attach point with a receptacle for a safety harness. The safety harness attach point is aft of the number one strut fairing adjacent to the pump/power pack. Attach the safety harness to the attach point when you operate the pump/power pack.
　
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