(b)
Remove the external bonding jumpers (with bonding clip attached).
S 024-009
(12)
Remove the override/jettison pump housing from the tank.
S 034-029
(13)
Discard the O-ring.
S 034-010
(14)
AIRPLANES WITHOUT A PIN IN THE DISCHARGE CHECK VALVE; Remove the clamp and rubber seal from the discharge check valve (AMM/28-31-11/401).
NOTE: Do not discard the clamp and rubber seal.
____
TASK 28-31-07-404-011
3. Override/Jettison Pump Housing Installation (Fig. 401)___________________________________________
A. Consumable Materials
(1)
D00128 Petrolatum - Technical, VV-P-206
(2)
A00745 Sealant - Corrosion Protection, BMS5-142
(3)
A00247 Sealant - Corrosion Protection, BMS5-95 Type 1 (Alternate cap sealant for BMS5-142)
(4)
C00064 Coating - Alodine 600 Chemical conversion coating for aluminum or aluminum alloys, (MIL-C-5541).
(5)
C00307 Corrosion Resistant Finish - BMS 10-20 Type II
B.
References
(1)
AMM 07-11-08/201, Cargo and Fuel Loading Support
(2)
AMM 12-11-01/301, Fuel Servicing
(3)
AMM 20-11-14/701, Metal Surfaces
(4)
AMM 28-11-00/801, Fuel Tank Repair
(5)
AMM 28-11-00/201, Fuel Tanks
(6)
AMM 28-11-09/401, Spanwise Beam Access Door
(7)
AMM 28-31-01/401, Override/Jettison Pump Motor/Impeller Unit
(8)
AMM 28-31-11/401, Override/Jettison Pump Discharge Check Valve
(9)
AMM 51-21-04/701, Alodine Finish
(10)
AIPC 28-31-07, Fig. 1
(11)
SWPM 20-20-00, Electrical Bond and Ground
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28-31-07
ALL ú ú 04 Page 404 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
OVERRIDE/JETTISON PUMP HOUSING
SEE A
SPAR REAR
DISCHARGE LINE
INLET LINE PUMP COUPLING
O-RINGS
O-RINGS
O-RING DISCHARGE PRIMER PORT COUPLING OVERRIDE/JETTISON PUMP HOUSING (AMM 28-31-01/401) MOTOR/IMPELLER UNIT A
FWD
A
OVERRIDE/JETTISON PUMP HOUSING A
Figure 401 (Sheet 1) Override/Jettison Pump Housing
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28-31-07
ALL ú ú 01 Page 405 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
REAR
(INBOARD MAIN 2 AND 3 PUMPS) A-A
Override/Jettison Pump Housing
Figure 401 (Sheet 2)
L24214
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ELECTRICAL CONNECTOR ú ú 03 Page 406 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
OVERRIDE/JETTISON PUMP HOUSING
MOUNTING BOLT
WASHER
(6 LOCATIONS)
BONDING CLIP SEE
D BONDING
JUMPER
SEE
D
OVERRIDE/JETTISON PUMP HOUSING
MOUNTING BOLT
WASHER
(6 LOCATIONS)
BONDING CLIP
BONDING
JUMPER
SEE
JUMPER
SEE
(INBOARD MAIN 2 AND 3 PUMPS) A-A
Override/Jettison Pump Housing Figure 401 (Sheet 3)
L24217
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ELECTRICAL CONNECTOR ú ú 03 Page 407 ú Jun 18/00
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