(a)
Install a new packing in the groove in the No. 4 bearing strainer element (lubricate with engine oil).
(b)
Install the strainer element in the No. 4 bearing element housing (lubricate with engine oil). 1) Tighten the strainer element with your hand.
(c)
Install the strainer housing on the engine case tube nut aft of Flange P.
(d)
Remove the protective caps from both the upper and lower sections of the tube.
(e)
Lubricate the tube nut threads of the upper and lower sections of the oil pressure tube with anti-galling compound.
(f)
Put the lower section of the oil pressure tube in position, aft of the two center LPT Bridge Brackets.
(g)
Put the upper section of the oil pressure tube in position.
(h)
Connect the two sections of the oil pressure tube with the tube nut. 1) Tighten the tube nut with your hand.
(i)
Connect the upper section of the oil pressure tube to the tube nut forward of Flange M. 1) Tighten the tube nut with your hand.
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75-24-07
ALL ú ú N01 Page 432 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(j)
Connect the lower oil pressure tube to the oil strainer housing on the engine case, aft of Flange P. 1) Tighten the tube nut with your hand.
(k)
Lubricate the threads of the bolt, which attaches the tube clamp to the bracket forward of Flange M with oil.
(l)
Install the tube clamp on the oil pressure tube.
(m)
Tighten the bolt, which attaches the tube clamp on the oil pressure tube, with your hand.
(n)
Tighten the bolt to 27-30 pound-inches (3.5-3.4 newton-meters).
(o)
Use engine oil to lubricate the threads of the bolts, which attach the tube clamps to the brackets on Flanges M and N.
(p)
Install the tube clamps on the oil pressure tube to the brackets on Flanges M, N, P and on the lower LPT bridge bracket with the bolts and nuts.
(q)
Tighten all bolts, which attach the tube clamps on the oil pressure tube, with your hand.
(r)
Tighten all bolts to 36-40 pound-inches (4.1-4.5 newton-meters).
(s)
Tighten the strainer to the strainer housing to 150-170 pound-inches (16.9-19.2 newton-meters). 1) Safety the strainer with lockwire or safety cable and
safety cable ferrule.
(t)
Tighten the strainer housing to the tube nut, on the engine case to 270-300 pound-inches (30.5-33.9 newton-meters). 1) Safety the strainer housing with lockwire or safety cable
and safety cable ferrule.
(u)
Tighten all tube nuts for the oil pressure tube to 340-375 pound-inches (38.4-42.4 newton-meters). 1) Safety the tube nuts with lockwire or safety cable and
safety cable ferrule.
(v)
Install the spray shield between the strainer housing, on the engine case and tube nut on the oil pressure tube with clamps (aft of Flange P). 1) Tighten the hose clamp to 15-18 pound-inches (1.7-2.0
newton-meters).
(w)
Use the clamps to install the spray shield, on the inboard side of the tube nut between the upper and lower sections of the oil pressure tube (aft of Flange N). 1) Tighten the hose clamp to 15-18 pound-inches (1.7-2.0
newton-meters).
(x)
ENGINES WITHOUT PW SB 79-54; Attach the spray shield to the inboard side of the forward tube connection with the steps that follow: 1) Install the spray shield to the forward tube connection
with the clamps.
2) Attach the rear of the spray shield with a hose clamp.
3) Tighten the hose clamp to 15-18 pound-inches (1.7-2.0
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