(k)
Remove the screw (32), washer (9), and nut (4) that attaches the other pneumatic tube clamps to the (main oil filter housing bracket) bracket (30) (Fig. 401, View G).
(l)
Remove the clamp block assembly (11), which is on the top of the main oil filter housing (1) as follows: 1) Remove the two screws (3), washers (2), spacers (14), and
nuts (10) that attach the five pneumatic tubes (15, 16, 17, 18, and 19) to the clamp block assembly (11). 2) Remove the clamp block assembly (11).
(m)
Remove the screw (8), washers (9), and nut (10) that attaches the pneumatic tube clamp and the fuel inlet tube clamp for the fuel/oil cooler to the bracket (30).
NOTE: This is attached at the forward left side of the
____
pressure relief valve (21) for the oil system.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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(n)
Disconnect the pneumatic tube nut (15) from the pressure regulating valve (PRV) controller which is at the 6:30 o'clock position. 1) Remove the pneumatic tube (15) from the engine.
(o)
Remove the two bolts (23), washers (9), and nuts (4) that attach the support bar clamp (22) to the bracket (30).
NOTE: This is forward of the main oil filter housing (1).
____
(p)
Remove the clamp (22) from the support bar (33).
(q)
Remove the bolt (25) and nut (24) that attaches the other end of the support bar (33) to the horizontal driveshaft bracket.
(r)
Remove the bolts (23), washers (9), and nuts (4) that attach the support bar clamps to the bracket at the 7 o'clock position (Fig. 401, View H).
(s)
Remove the clamp block assembly (28), which is at approximately the 7 o'clock position, as follows: 1) Remove the two screws (26), washers (2), clamp (22),
spacers (27), and nuts (10) that attach the four pneumatic tubes (16, 17, 18, and 19) to the clamp block assembly (28).
2) Remove the clamp block assembly (28).
(t)
Disconnect the pneumatic tube nuts (16 and 19) from the pressure regulating valve (PRV) controller.
(u)
Remove the screw (8), washers (9), and nut (10) that attaches the jumper cable clamp to the pneumatic tube clamp.
(v)
Disconnect the pneumatic tube nut (17 and 18) from the high pressure controller which is at the 6:30 o'clock position.
(w)
Remove the screw (5), washer (6), and nut (4) that attaches the fire extinguishing tube clamp to the bracket.
NOTE: This clamp is forward of the high pressure controller at
____ the 7 o'clock position (Fig. 401, View H).
(x) Remove the pneumatic tubes (15, 16, 17, 18, and 19) and the fire extinguishing tube assembly (7) from the engine.
S 014-005-N00
(7)
Remove the oil filter inlet and outlet pressure tubes (20 and 31) as follows:
(a)
Disconnect the inlet pressure tube (31) nut from the reducer (LP4 port) on the top forward and inboard face of the main oil filter housing (1). 1) Remove the inlet pressure tube (31) from the engine.
(b)
Disconnect the outlet pressure tube (20) nut from the reducer (LP5 port) on top forward face of the main oil filter housing (1). 1) Remove the outlet pressure tube (20) from the engine.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 684-006-N00
(8)
Drain the oil from the main oil filter housing (1) as follows:
(a)
Prepare to catch the oil by placing a five gallon container below the main oil filter housing (1) to catch the oil.
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