LEFT SIDE SHOWN (RIGHT SIDE IS EQUIVALENT)
FWD

Thrust Reverser Cowl Opening Flex Hose InstallationFigure 401 (Sheet 1)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE B
THRUST REVERSER
ENGINE FAN CASE
HOLD OPEN ROD
45-DEGREE
SEE C
BRACKET
MANIFOLD PRESSURE  DUST CAP 
C  B  HAND PUMP 
Thrust Reverser Cowl Opening Flex Hose Installation Figure 401 (Sheet 2) 

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TASK 78-31-08-404-010-N00
 2. Install the Thrust Reverser Cowl Opening Actuator Flex Hoses
____________________________________________________________
 A. Equipment
 (1)  
C78005-21 - Thrust Reverser Handpump

 B.
Consumable Materials

 (1)  
D00071 Oil, Engine - MIL-L-7808 or equivalent

 C.
References

 (1)  
AMM 71-11-04/201, Fan Cowl Panels

 (2)  
AMM 71-11-06/201, Core Cowl Panels

 (3)  
AMM 78-31-00/201, Thrust Reverser System

 (4)  
AIPC 78-31-06, Fig. 5

 D.
Access

 (1)  
Location Zone 415 and 416 Engine 1 - Thrust Reverser Halves 425 and 426 Engine 2 - Thrust Reverser Halves 435 and 436 Engine 3 - Thrust Reverser Halves 445 and 446 Engine 4 - Thrust Reverser Halves

 (2)  
Access Panel
 413 and 414 Fan Cowl Panels - Engine 1
 417 and 418 Core Cowl Panels - Engine 1
 423 and 424 Fan Cowl Panels - Engine 2
 427 and 428 Core Cowl Panels - Engine 2
 433 and 434 Fan Cowl Panels - Engine 3
 437 and 438 Core Cowl Panels - Engine 3
 443 and 444 Fan Cowl Panels - Engine 4
 447 and 448 Core Cowl Panels - Engine 4

 E.
Install the Flex Hose

 S 424-057-N00
 (1)  Do these steps to install the flex hose (Fig. 401).
 (a)  
Remove the protective caps and connect the bottom end of the flex hose to the actuator.

 (b)  
Install the clamps which attach the hose to the strut structure.

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(c)  
Connect the top ends of the flex hose to the union on the
 strut.

 (d)  
Loosen the flex hose on the fitting of the opening actuator.

 (e)  
Operate the hand pump until the engine oil leakage starts from the loose flex hose fitting.

 (f)  
Tighten the flex hose fitting for the opening actuator to 30-40 pound-inches.

 S 414-037-N00
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
 (2)  Close the thrust reverser (sling method) (AMM 78-31-00/201).
 (a)  
Remove the sling hoist when the thrust reverser half is closed.

 (b)  
Keep the core cowl and fan cowl panels open.

 S 874-038-N00
 WARNING: DO NOT MOVE BETWEEN THE ENGINE AND THRUST REVERSER WHEN YOU
_______ OPEN AND CLOSE THE THRUST REVERSER. IF YOU ARE BETWEEN THE ENGINE AND THE THRUST REVERSER, IT CAN CAUSE INJURY TO YOU.
 WARNING: YOU MUST BLEED THE AIR FROM THE OPENING SYSTEM FOR THE THRUST
　
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