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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(h)  
Tighten the bolts (48) that attach the main filter oil tube (35) to the top of the fluid pressure adapter (tbd) to 62-72 pound-inches (7.0-8.1 newton-meters).

 (i)  
Install the bolts (46), threads lubricated with engine oil, and nuts (47) that attach the clamps and clampshells of the main filter oil tube to the diffuser case.

 (j)  
Tighten the clamp bolts to to 32-36 pound-inches (3.6-4.1 newton-meters).

 S 434-020-N00
 (14)
 Install the inlet tube (34) of the air/oil heat exchanger on the top of the main oil filter housing (1) as follows:

 (a)  
Install the packing (34B) in the groove on the inlet tube seat of the air/oil heat exchanger.

 (b)  
Put the inlet tube (34) of the air/oil heat exchanger in the oil-out port.

 (c)  
Attach the inlet tube (34) with the bolts (34A), threads lubricated with engine oil.

 (d)  
Tighten the bolts (34A) to 85-95 pound-inches
 (9.6-10.7 newton-meters).

 S 414-021-N00
 (15)
 Install the five pneumatic tubes (15, 16, 17, 18, and 19), the drain tube (13), and the fire extinguishing tube assembly (7), as follows:

 (a)  
Connect the four pneumatic tube nuts and the fire extinguishing tube nut that is near the top of the oil tank at approximately the 10 o'clock position. 1) Tighten the tube nut to 257-283 pound-inches

 (29.0-32.0 newton-meters).

 (b)  
Connect the pneumatic tube nut (18) to the boss on the HPC forward case at approximately the 7 o'clock position. 1) Tighten the tube nut to 257-283 pound-inches

 (29.0-32.0 newton-meters).

 (c)  
Connect the pneumatic tube nuts (17 and 18) to the high pressure controller which is at the 6:30 o'clock position. 1) Tighten the tube nuts to 257-283 pound-inches

 (29.0-32.0 newton-meters).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(d)  
Connect the pneumatic tube nuts (16 and 19) to the PRV (pressure regulating valve) controller.

 (e)  
Tighten the tube nuts to 257-283 pound-inches (29.0-32.0 newton-meters).

 (f) Install the drain tube (13) for the fuel/oil cooler as follows: 1) Remove the plugs from the drain tube (13) for the fuel/oil cooler. 2) Connect the drain tube (13) to the drain port elbow of the fuel/oil cooler and to the tee which is near the top of the main oil filter housing (1).
 3)  Tighten the tube nuts to 70-80 pound-inches
 (7.9-9.0 newton-meters).

 (g)  
Install the screw (5), washer (6), and nut (4) that attaches the drain tube clamp to the bracket (12) at the top of the main gearbox. 1) Tighten the screw (5) to 30-35 pound-inches

 (3.4-4.0 newton-meters).

 (h)  
Connect the pneumatic tube nut (15) to the PRV (pressure regulating valve) controller at the 6:30 o'clock position. 1) Tighten the tube nut to 257-283 pound-inches

 (29.0-32.0 newton-meters).

 (i)  
Install the w (5), washer (6), and nut (4) that attaches the fire extinguishing tube clamp to the bracket on the top of the oil tank at approximately the 9 o'clock position. 1) Tighten the screw (8) to 25-35 pound-inches

 (2.8-4.0 newton-meters).

 (j)  
Install the screw (8), washer (9), and nut (10) that attaches the pneumatic tube clamp to the bracket on the right side of the oil tank mounting flange. 1) Tighten the screw (8) to 25-35 pound-inches

 (2.8-4.0 newton-meters).

 (k)  
Install the screw (5), washer (6), and nut (4) that attaches the drain tube clamp of the fuel/oil cooler and the fire extinguishing tube clamp at the top of the main gearbox. 1) Tighten the screw (5) to 25-35 pound-inches

 (2.8-4.0 newton-meters).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
　
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