(c)
Disconnect the coupling nut for the fuel line from the center tank fitting.
(d)
Remove the snap ring.
(e)
Engage the flexible fitting again and tighten it.
(f)
Move the fuel line and the shroud from the flexible fitting.
(g)
Remove the O-ring from the shroud and discard it.
S 014-085
(7) Get access to the APU shroud in the APU compartment through the access door, 3804, for the APU compartment (AMM 12-31-41/201).
(a)
Push the trigger in each of the three latch handles to release the safety lock.
(b)
Hold the door up with your hands while you move each latch handle to the open position.
(c)
Let the door open.
(d)
Release the brace rods from the inner surface of the door.
(e)
Put the brace rods in the correct position to hold up the open door.
S 034-086
(8) Disconnect the APU fuel line from the flexible fuel line coupling (View F, Fig. 401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-22-81
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 014-087
(9)
Open the access door, 3701, for the stabilizer trim (AMM 12-31-00/201) to get access to the APU aft shroud.
S 034-088
(10)
Loosen the hose clamp that attaches the flexible shroud to "section 1" of the aft shroud (View E, Fig. 401).
S 034-068
(11)
Move the flexible shroud forward until you can see the flexible fuel line.
S 034-135
(12)
Remove the flexible fuel line from "section 2" of the aft shroud.
(a) Lower the aft port of the flexible fuel line through the opening for the access door, 3701, for the stabilizer trim.
S 024-089
(13) Remove "section 1" of the aft shroud.
(a)
Remove the bolt that attaches the bonding jumper to the aft shroud.
(b)
Remove the bolts that attach the aft shroud to the pressure bulkhead (View D, Fig. 401).
(c)
Remove the bolts that attach the support clamps for the aft shroud to the pressure bulkhead (2 locations).
(d)
Turn the aft shroud.
(e)
Remove the shroud from the flexible line and move it through the access door.
(f)
Pull the forward part of the flexible fuel line in the aft direction at the pressure bulkhead.
(g)
Move the line through the access door, 3701, for the stabilizer trim.
TASK 28-22-81-404-090
7. Flexible APU Fuel Line Installation___________________________________
A. Equipment
(1) Source - air pressure, 40 psi maximum
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28-22-81
ALL ú ú 08 Page 416 ú Nov 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 25-27-15/401, Carpets
(3)
AMM 53-21-00/401, Passenger Cabin Floors
C. Access
(1)
Location Zones
108 Aft Half of Cabin
218 Aft Cargo Compartment
220 Aft Cargo Compartment Equipment Bay
701 Tail Compartment
702 Tail Compartment Access Door
(2)
Access Panels
3701 Stabilizer Trim Access Door
3804 APU Cowl Door
D. Procedure
S 564-091
(1)
Put the flexible fuel line through the access door, 3701, for the stabilizer trim.
S 434-070
(2)
Put the flexible fuel line into the aft end of the main shroud (View D, Fig. 401).
S 434-092
(3)
Continue to put the fuel line into the main shroud until the fuel line is against the interconnect fitting for the center tank (View C, Fig. 401).
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