(4)  
AMM 71-11-06/201, Core cowl Panels

 (5)  
AMM 78-31-00/201, Thrust Reverser System

 (6)  
AMM 79-35-01/401, Oil Filter Differential Pressure Switch

 E.  
Access

 (1)  
Location Zone
 412 Engine 1 - Main Gearbox Fwd Face 8 o'clock
 422 Engine 2 - Main Gearbox Fwd Face 8 o'clock
 432 Engine 3 - Main Gearbox Fwd Face 8 o'clock
 442 Engine 4 - Main Gearbox Fwd Face 8 o'clock

 (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.  
Procedure

 S 034-040-N00
 (1)  
ENGINES PRE-PW-SB 72-524; If you will install a new main oil filter housing (1), do the steps that follow (Fig. 402, View L):

 (a)  
Install the spring on the key washer.

 1)  Align bolt hole and position key washer (71) in center of the cover with the tab of the key washer in the mating hole in the cover.
 2)  Install the keywasher (71) with the screw (70) lubricated with engine oil. 3) Tighten the screw to 36-40 pound-inches (4.067-4.519 newton-meters). 4) Install the spring on the key washer by bending the tabs of the washer out between the coils of the spring.
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 72-61-11
 ALL  ú ú N02 Page 429 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
CAUTION: MAKE SURE THAT THE REMOVABLE PLUG IS IN THE END CAP OF THE
_______ FILTER ELEMENT. IF THE PLUG IS NOT THERE, THE ELEMENT WILL NOT OPERATE.
 (b)  
Install the filter element (56), with the plugged end outward, into the main oil filter housing (1).

 (c)  
Install the packing (57), lubricated with engine oil, in the groove in the cover (29).

 CAUTION:_______MAKE SURE YOU INSTALL THE COVER CORRECTLY. AN INCORRECTLY INSTALLED COVER CAN CAUSE DAMAGE TO THE PACKING AND AN IN-FLIGHT SHUTDOWN.
 CAUTION: DO NOT USE THE BOLTS TO MOVE THE COVER INTO THE MAIN OIL
_______ FILTER HOUSING. IF YOU DO THAT, DAMAGE TO THE PACKING CAN OCCUR.
 (d)  
Put the cover (29) on the main oil filter housing (1), with the drain opening in the cover away from the engine.

 (e)  
Align the bolt holes with the holes in the cover (29) as you fully install it into the main oil filter housing (1).

 CAUTION:_______MAKE SURE YOU TORQUE THE BOLTS TO THE CORRECT TORQUE. AN INCORRECTLY INSTALLED COVER CAN CAUSE DAMAGE TO THE PACKING AND AN IN-FLIGHT SHUTDOWN.

 (f)  
Install the bolts (60) and washers (61) to attach the cover (29).

 (g)  
Lubricate the packing (68) and the threads of the insert (67) with engine oil.

 (h)  
Install the insert (67) and the packing (68) in the cover (29). 1) Tighten the insert to 200-225 pound-inches (22.6-25.4 newton-meters).

 2)  Tighten the bolts (60) to 125-140 pound-inches
 (14.1-15.8 newton-meters).

 (i)  
Lubricate the packing (58) and the threads of the plug (59) with engine oil.

 (j) Install the plug (59) and the packing (58) in the cover (29). 1) While you hold the insert with a wrench on the flats, tighten the plug (59) to 110-120 pound-inches (12.4-13.6 newton-meters).
 2)  Install lockwire or safety cable and safety cable ferrule on the plug (59).
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 72-61-11
 ALL  ú ú N02 Page 430 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(k)  
Lubricate the packings (52) and the insert threads (51) with
 engine oil.

 (l)  
Install the packings (52) on the inserts (51).

 (m)  
Install the inserts (51) to the LP4 and LP5 ports.

 1)  Tighten the inserts (51) to 200-225 pound-inches (22.6-25.4 newton-meters).
　
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