(b)
Disconnect the electrical connector D95004 (P4) (5) from the fuel metering unit (1).
(c)
Disconnect the fuel pressure tube (6) from the elbow (7).
(d)
Drain the fuel from the fuel pressure tube (6) into the container.
(e)
Install a cap on the fuel pressure tube (6).
(f)
Disconnect the fuel pressure tube (2) from the nipple (3).
(g)
Drain the fuel from the fuel pressure tube (2) into the container.
(h)
Install a cap on the fuel pressure tube (2).
(i)
Remove the four nuts (14), seven washers (12) and four bolts (13) that attach the bracket with its attaching parts and fuel metering unit (1) to the fuel metering adapter.
(j)
Remove the fuel metering unit (1).
(k)
Remove the two packings (11) from the fuel metering unit (1). 1) Discard the two packings (11).
(l)
Remove the elbow (7), nut (8), ring (9) and packing (10). 1) Discard the ring (9) and packing (10).
(m)
While you hold the regulator sleeve in position, remove the nipple (3) from the fuel metering unit (1).
NOTE: Use an open-end wrench on the nut of the regulator
____ sleeve to hold the regulator sleeve in position while you remove the nipple (3).
(n)
Remove the packing (4) from the nipple (3). 1) Discard the packing (4).
(o)
Make sure you install all necessary protection covers.
(p)
Remove the container.
TASK 49-31-01-404-015
3. Fuel Metering Unit Installation (Fig. 401)
_______________________________
A. References
(1) AMM 49-11-00/201, Auxiliary Power Unit
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A
747-400
MAINTENANCE MANUAL
FWD
SEE A
APU COMPARTMENT
1. FUEL
METERING
UNIT
SEE B
FWD
A
Fuel Metering Unit Installation Figure 401 (Sheet 1)
L97330
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A
747-400
MAINTENANCE MANUAL
BRACKET
1. FUEL
14. NUT METERING
(4 LOCATIONS) UNIT 2. FUEL PRESSURE TUBE (FROM DIVERTER13. BOLT VALVE CONTROL)(4 LOCATIONS) 3. NIPPLE
12. WASHER (7 LOCATIONS) 4. PACKING
FUEL
METERING
ADAPTER
11. PACKING (2 LOCATIONS)
10. PACKING
9. RING
8. NUT REGULATOR
7. ELBOW SLEEVE
HEAT SHIELD FWD
6. FUEL PRESSURE TUBE
(FROM FLOW DIVIDER
AND DUMP VALVE)
5. ELECTRICAL CONNECTOR, D95004 (P4)
FUEL METERING UNIT
B
Fuel Metering Unit Installation
Figure 401 (Sheet 2)
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L97712
A
747-400
MAINTENANCE MANUAL
B. Consumable Materials
(1) D00098 Fuel, Turbine Engine - P01-001
C. Parts ~.............................................................................. | AMM | | AIPC | |................ ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Fuel Metering Unit | 49-31-01 | 01 | 80 | | | 4 | Packing | 49-31-00 | 01 | 190 | | | 9 | Ring | | | 95 | | | 10 | Packing | | | 100 | | | 11 | Packing | 49-31-02 | 01 | 15 | 2......…........…...................................…..........…......…........1
D. Access
(1)
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