(b)
Lubricate the threads of the oil scavenge tube (LR06) with the Fel-pro C-200 antigalling compound.
(c)
Install the oil scavenge tube (LR06) to the internal tube nut on the exhaust case at the 10 o'clock position (Fig. 510, View A). 1) Tighten the tube nut with your hand.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TEST NO. 12 - ENGINE VACUUM TEST________________________________
(d) Connect the tube nut for the oil scavenge tube (LR06) to the
oil scavenge tube (LR05) at Flange M at approximately the 7
o'clock position (Fig. 510, View H).
1) Tighten the tube nut with your hand.
(e) Lubricate the threads of the bolts, which attach the clamps for
the oil scavenge tube (LR06), with engine oil.
(f) Install the clamps, bolts, and nuts on the oil scavenge tube
(LR06) to the brackets at Flange N and P (Fig. 510, Views C, D,
E, F and G).
1) Tighten the bolts to 36-40 pound-inches (4.1-4.5
newton-meters).
(g) Tighten the tube nut at the exhaust case connection to 200-225
pound-inches (22.6-25.4 newton-meters).
1) Install the lockwire or safety cable and safety cable
ferrule to the tube nut.
(h) Tighten the tube nut at the Flange M connection to 475-525
pound-inches (53.7-59.3 newton-meters).
1) Install the lockwire or safety cable and safety cable
ferrule to the tube nut.
(i) Install the spray shield to the inboard side of the Flange M
connection, and attach the forward end with the hose clamp
(Fig. 510, View H).
1) Tighten the hose clamp to 15-18 pound-inches (1.7-2.0
newton-meters).
(j) Lubricate the threads of the bolt, which attaches the clamp for
the aft end of the spray shield, with engine oil.
(k) Install the clamp to the aft end of the spray shield and the
Flange M bracket with the bolt and nut.
1) Tighten the bolt to 36-40 pound-inches (4.1-4.5
newton-meters).
S 425-250-N00
(24) ENGINES WITH PW SB 79-75 AND WITHOUT PW SB 79-76; Install the oil scavenge tube (LR06) for the No. 4 bearing:
(a) Remove the protection covers from the oil scavenge tube (LR06).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
TEST NO. 12 - ENGINE VACUUM TEST________________________________
(b) Lubricate the threads of the oil scavenge tube (LR06) with the
Fel-pro C-200 antigalling compound.
(c) Install the oil scavenge tube (LR06) to the internal tube nut
on the exhaust case at the 10 o'clock position (Fig. 510, View
A).
1) Tighten the tube nut with your hand.
(d) Connect the tube nut for the oil scavenge tube (LR06) to the
oil scavenge tube (LR05) at Flange M at approximately the 7
o'clock position (Fig. 510A).
1) Tighten the tube nut with your hand.
(e) Lubricate the threads of the bolts, which attach the loop clamp
bracket to Flange M, with engine oil.
(f) Attach the oil scavenge tube (LR06) to the loop clamp bracket
on the Flange M bracket at approximately the 7 o'clock position
with the bolts.
1) Tighten the bolts with your hand.
2) Tighten the bolts to 36-40 pound-inches (4.1-4.5
newton-meters).
(g) Lubricate the threads of the bolts, which attach the clamps for
the oil scavenge tube (LR06), with engine oil.
(h) Install the clamps to the oil scavenge tube (LR06) and attach
to the brackets on Flanges N and P with the bolts and nuts
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本文链接地址：747-400 AMM 飞机维护手册 动力装置 POWER PLANT 1(88)
