K21835
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SEE A
FWD
7. FUEL PUMP
L-B7031 (1098)
A INLET TUBE
PW V
(FM11)
Fuel Pump Inlet Tube Installation from the Right Side
Figure 402
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K21843
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 024-004-N00
(1) Disconnect the fuel pump inlet tube (FM11) (7) from the aft end of
the fuel/oil cooler (1).
S 024-005-N00
(2) Remove the AP-5 borescope plug (4).
(a) Find the AP-5 borescope plug (4) on the HPC case at
approximately the 7 o'clock position.
(b) Remove the AP-5 plug (4) and key washer (3) from the HPC case.
S 024-006-N00
(3) Remove the heatshield (22) and clamp (26) from the (LP08) tee (23).
(a) Remove the three bolts (25) and nuts (27), which attach the
heatshield (22) and clamp (26) to the (LP08) tee (23).
(b) Remove the clamp (24), which attaches the heatshield (22) to
the main gearbox pressure tube (LP12) (5).
(c) Remove the heatshield (22) and clamp (26) from the engine.
S 024-007-N00
(4) Remove the main gearbox pressure tube (LP12) (5).
(a) Disconnect the main gearbox pressure tube (LP12) (5) from the
(LP08) tee (23).
(b) Remove the two bolts (14), which attach the main gearbox
pressure tube (LP12) (5) flange to the gearbox (16).
(c) Remove the clamp bolts (11) and nuts (13), which attach the
main gearbox pressure tube (LP12) (5) to the W3 and W5 harness
clamps (12).
(d) Remove the clamp bolt (21), which attaches the main gearbox
pressure tube (LP12) (5) to the bracket (20) below the fuel
pump inlet tube (FM11) (7).
(e) Remove the main gearbox pressure tube (LP12) (5) from the
engine.
S 024-008-N00
(5) Disconnect the clamps (17) on the fuel pump inlet tube (FM11) (7).
(a) Remove the bolts (18) and nuts (19), which attach the
clamps (17) to the No. 3 bearing breather valve air supply tube
(AP39) (8) and the bracket (20).
S 024-009-N00
(6) Remove the fuel pump inlet tube (FM11) (7) from the engine.
(a) With the fuel pump and the FMU removed, hold the flanged end of
the fuel pump inlet tube (FM11) (7) and carefully remove it
from the right side of the engine.
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(b) Remove the packing (9) and retainer (10) from the fuel/oil cooler end (1) on the fuel pump inlet tube (FM11) (7).
S 424-010-N00
(7) Install protection covers to all openings.
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本文链接地址：747-400 AMM 飞机维护手册 发动机燃油和控制 1(94)
