(2)
Access Panel
317AL APU Access Door
318AR APU Access Door
C.
Procedure
S 014-002
(1)
Do this task: "Flow Divider and Dump Valve Removal" (AMM 49-31-00/201).
S 024-020
(2)
Remove the fuel manifolds (5 and 7) and the nozzle adapters (3 and 6):
(a)
Disconnect the fuel manifolds (5 and 7) from each fuel nozzle adapter (3 and 6).
(b)
Remove the fuel manifolds (5 and 7).
(c)
Install plugs on the fuel manifold openings to prevent contamination.
(d)
Remove the two transfer tubes (8) from each fuel nozzle adapter (3 and 6).
NOTE: There is a total of 28 transfer tubes.
____
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747-400
MAINTENANCE MANUAL
SEE A
1.
GASKET
2.
SEAL COVER
1. GASKET
FWD 3. FUEL NOZZLE
2. SEAL
ADAPTER COVER
4. BOLT
8. TRANSFER TUBE
6. BOTTOM
FUEL NOZZLE
9. PACKING ADAPTER
7. PRIMARY FUEL MANIFOLD
5. SECONDARY FUEL MANIFOLD
6 O'CLOCK POSITION
A
Fuel Manifold and Nozzle Adapter Installation Figure 401
F58313
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747-400
MAINTENANCE MANUAL
(e)
Remove the 28 bolts (4) that attach the fuel nozzle adapters (3 and 6) to the gas generator case.
(f)
Remove the 14 fuel nozzle adapters (3 and 6).
(g)
Remove the seal cover (2) and the gasket (1) from each fuel nozzle adapter. 1) Discard the gaskets.
S 434-010
(3) Install caps on the nozzle adapter openings to prevent contamination.
TASK 49-31-04-404-011
3. Fuel Manifold and Nozzle Adapter Installation (Fig. 401)
_____________________________________________
A. References
(1)
AMM 49-31-00/201, Flow Divider and Dump Valve
B.
Parts ~.............................................................................. | AMM | | AIPC | ................. NOMENCLATURE ............................ | FIG | ITEM | | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Gasket | 49-31-04 | 01 | 7 | | | 3 | Inlet Nozzle Assembly (Fuel | | |45, 50,| | | | Nozzle Adapter) | | |60, 65,| | | | | | | 80 or | | | | | | | 85 | | | 5 | Nozzle Manifold Assembly | | | 115 | | | | (Secondary Fuel Manifold) | | | | | | 6 | Fuel Nozzle Assembly (Bottom Fuel | | | 90 or | | | | Nozzle Adapter) | | | 95 | | | 7 | Nozzle Manifold Assembly (Primary | | | 115 | | | | Fuel Manifold) | | | | | | 9 | Packing | | | 110 | 2.......….......…...................................…...........…......….......1
C.
Access
(1)
Location Zone 317 APU Compartment-Circumference of Gas Generator Case, LH 318 APU Compartment-Circumference of Gas Generator Case, RH
(2)
Access Panel
317AL APU Access Door
318AR APU Access Door
D.
Procedure
S 034-012
(1) Remove the caps and the plugs from the manifold and the adapter openings.
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747-400 MAINTENANCE MANUAL
S 424-021
(2) Install the fuel manifolds (5 and 7) and the nozzle adapters (3 and 6):
CAUTION:_______BE CAREFUL WHEN YOU TOUCH THE FUEL NOZZLES. MAKE SURE YOU USE CLEAN LINTFREE COTTON GLOVES WHEN YOU TOUCH THE COMPONENTS. FINGERPRINTS ON AN OPENING CAN CAUSE AN UNSATISFACTORY FUEL SPRAY.
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