(b)
Remove the plug (59) from the cover aseembly (29). 1) Remove the lockwire from the plug. 2) If applicable, hold the insert with a wrench while you
remove the pluge. Remove the plug.
3) Discard the packing (58).
(c)
Let the oil fully drain.
S 034-047-N00
(9)
Disconnect the inlet tube (LP02) (34) for the air/oil heat exchanger as follows:
(a)
Remove the three bolts (34A) that attach the inlet tube (LP02) (34) to the oil-out port of the main oil filter housing (1).
(b)
Discard the packing (34B).
S 034-008-N00
(10)
ENGINES PRE-PW-SB 79-75; Remove the main filter oil tube (LP01) (35) as follows:
(a)
Remove the three bolts (34) that attach the main filter oil tube (LP01) (35) to the oil-in port on the forward left side of the main oil filter housing (1).
(b)
Remove the two bolts (48) that attach the main filter oil tube (LP01) (35) and the bracket to the top of the lubrication and scavenge oil pump.
(c)
Remove the bolts (46) and nuts (47) that attach the main filter oil tube clamps to the main gearbox bracket at two places.
(d)
Remove the bolts (46) and nuts (47) that attach the clamps and clampshells (for the main filter oil tube) to the scavenge tube clamps for the No. 4 bearing oil and to the diffuser case bracket (Fig. 402, Sheet 5, View K).
(e)
Remove the main filter oil tube (LP01) (35) from the engine. 1) Discard the packing (45).
S 034-050-N00
(11)
ENGINES POST-PW-SB 79-75; Remove the main filter oil tube (LP01) (35) as follows:
(a)
Remove the three bolts (44) that attach the main filter oil tube (LP01) (35) to the oil-in port on the forward left side of the main oil filter housing (1).
(b)
Remove the bolts (83) that attach the main filter oil tube (LP01) (35) to the top of the fluid pressure dampener (88).
(c)
Remove the bolts (84) and nuts (85) that attach the main filter oil tube clamps to the main gearbox bracket at two places (Fig. 402, Views H and J).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-61-11
ALL ú ú N01 Page 420 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(d)
Remove the bolts (46) and nuts (47) that attach the clamps and clampshells (for the main filter oil tube) to the diffuser case bracket at approximately 7 o'clock position (Fig. 402, View Z).
(e)
Remove the main filter oil tube (LP01) (35) from the engine.
1) Discard the packing (45).
(f)
If necessary, remove the fluid pressure dampener (88) as follows: 1) Remove the bolts (84) and nuts (85) that attach the fluid
pressure dampener (88) to the engine bracket (87). 2) Remove the fluid pressure dampener (88). 3) Discard the packing (86).
S 034-054-N00
(12)
ENGINES POST-PW-SB 79-86; Remove the main filter oil tube (LP01) (35) as follows:
(a)
Remove the three bolts (44) that attach the main filter oil tube (LP01) (35) to the oil-in port on the forward left side of the main oil filter housing (1).
(b)
Remove the bolts (83) that attach the main filter oil tube
(LP01) (35) to the top of the fluid pressure adapter (tbd).
(c)
Remove the bolts (84) and nuts (85) that attach the main filter oil tube clamps to the main gearbox bracket at two places (Fig. 402, Views H and J).
(d)
Remove the bolts (46) and nuts (47) that attach the clamps and clampshells (for the main filter oil tube) to the diffuser case bracket at approximately 7 o'clock position (Fig. 402, View Z).
(e)
Remove the main filter oil tube (LP01) (35) from the engine.
1) Discard the packing (45).
(f)
If necessary, remove the fluid pressure adapter (tbd) as follows: 1) Remove the bolts (84) and nuts (85) that attach the fluid
pressure adapter (tbd) to the engine bracket (87). 2) Remove the fluid pressure adapter (tbd). 3) Discard the packing (86).
S 034-051-N00
(13)
Remove the bypass valve drain tube (LP20) (37) for the fuel/oil cooler as follows:
(a)
Remove the bolts (41) that attach the drain tube (LP20) (37) to the lower inboard port on the main oil filter housing (1).
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 发动机 ENGINE 2(148)
