(7)  
AIPC 71-11-00 Fig. 1

 (8)  
AIPC 73-21-40 Fig. 2

 (9)  
AIPC 73-23-51 Fig. 1

 (10)
 AIPC 75-22-01 Fig. 1

 (11)
 AIPC 75-24-03 Fig. 1

 (12)
 AIPC 75-33-01 Fig. 1

 (13)
 AIPC 75-37-00 Fig. 1

 E.
Access

 (1)  
Location Zone
 412 Engine 1
 422 Engine 2
 432 Engine 3
 442 Engine 4

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

 F.
Prepare the Engine for the Procedure

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 447-025-N00

 WARNING:_______ DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
 OPERATION OF THE THRUST REVERSER.  THE ACCIDENTAL OPERATION OF
 THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO

 EQUIPMENT.
 (1)  
Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).

 S 727-102-N00

 (2)  
Calibrate and install the wash equipment as follows:

 (a)  
Connect the hoses, adapters, valve (PWA 83298), and two nozzles (PWA 101041) to the source of the water.

 (b)  
Turn on the water source.

 (c)  
Adjust the PWA 83298 flow valve for approximately 15 US gallons (57 liters) per minute total flow (7.5 US gallons (28.5 liters) per minute from each nozzle.

 NOTE: Use a container of known volume and a stop watch to
____ calculate the flow rate.
 (d)  
Make a mark on the valve and valve handle for the correct position.

 (e)  
Turn off the source.

 S 487-103-N00
 (3)  
Install the equipment to the engine as follows:

 (a)  
Use two persons to carefully put the two nozzles (PWA 101041) into the rear part of the thrust reverser's fan exit area at approximately the 3 o'clock and 9 o'clock positions (Fig. 701).

 (b)  
Put the nozzles over the forward lip of the fan exit fairing (splitter) just aft of the fan blades (Fig. 701, View A).

 (c)  
Make sure the flow will go into the engine core gaspath at approximately the 3 and 9 o'clock positions.

 (d)  
Put the nozzles in position as not to touch the fan exit guide vanes.

 (e)  
Carefully, attach the nozzle hooks to the thrust reverser translating cowl as follows: 1) Pull the hook handle aft 2) Engage the hook over the aft edge of the thrust reverser

 translating cowl to hold the wash nozzle in position (Fig. 701, View B). 3) Check that the four detail bolts on the clamp assembly are tight to hold the clamp in the correct position.
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4)  Attach the hoses and valve to an adjacent structure so that they do not move while you clean the gaspath of the engine.
 S 827-104-N00
 (4)  
Examine the equipment installation as follows:

 (a)  
If necessary, change the position of the wash nozzles for better attachment.

 (b)  
Make sure there is enough clearance between the nozzles and the LPC 1st stage fan blades for safe engine motoring.

 (c)  
Make sure there is enough clearance between the nozzles and the LPC 1.6 stage blades for safe engine motoring.

 (d)  
Make sure you can turn the low pressure compressor (LPC) freely.

 (e)  
Make sure the hose and valve are not in the fan airstream and are correctly attached before you motor the engine with the starter.
　
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