WHEEL WELL
DOOR STOPS
DOOR ACTUATOR
BELLCRANK SUPPORT
BELLCRANK
FWD WHEEL WELL DOOR STOP
OPERATOR RODS FORWARD DOOR
9. 8. 11. 10. WASHER WASHER WASHER SCREW
7. NUT 5.
FORWARD NOSE
WHEEL WELL DOOR
FLAPPER DOOR
DOOR
OPERATOR ROD
ATTACHMENT
SEE B
NOSE WHEEL WELL
BULKHEAD
BONDING JUMPER
SIDEWALL HINGE
3.
BOLT
4.
WASHER
BONDING JUMPER
SPACER
6. WASHER
HINGE ATTACHMENT A
BELLCRANK
DRIVE CRANK
NOSE GEAR TRUNNION
AFT DOOR STOPS
1. LEFT AFT NOSE WHEEL WELL DOOR
HINGE ATTACHMENT (3 PLACES)
SEE A
2. RIGHT AFT NOSE WHEEL WELL DOORAFT DOOR OPERATOR ROD
DOORSTOP PLATE
17. DOOR
OPERATOR
ROD
12.
WASHER
13.
NUT
16. BOLT
AFT DOOR
HINGE
FWDAFT DOOR
14.
BUSHING
15.
WASHER
INBD
DOOR OPERATOR
ROD ATTACHMENT
B
Aft Nose Wheel Well Doors Installation
Figure 401
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A
747-400 MAINTENANCE MANUAL
D. Procedure
S 034-050
(1) Disconnect the cable connectors of the glide slope antenna at the junction boxes.
NOTE: J29-Connectors D3203P and D3263P, J28-Connector D3205P.
____ You can find the junction boxes on the left and the right side wall of the nose wheel well.
S 034-061
(2)
Remove the bolts (16) to disconnect the operator rods (17) (View B, Fig. 401).
S 034-063
(3)
Remove the bonding jumper (View A, Fig. 401).
S 034-064
(4)
Remove the hinge covers.
S 024-065
(5)
Hold the door and remove the hinge bolts (3) (View A, Fig. 401).
S 024-058
(6)
If the door you will install does not have a glide slope antenna installed, remove the glide slope antenna from the door you removed (AMM 34-31-04/401).
NOTE: You can install this antenna on the door you will install if
____
it is serviceable.
TASK 32-22-02-404-005
3. Aft Nose Wheel Well Doors Installation
______________________________________
A. Consumable Material
(1)
A00247 Sealant - BMS 5-95, Class B
(2)
C00272 Protective, BMS 3-11, Type I (X-310 Catalyst)
(3)
D00633 Grease - BMS 3-33 (preferred)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(4) D00013 Grease - MIL-G-23827 (optional)
B. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Door, Nose Wheel Well Aft, LH | 32-22-02 | 01 | 40 | | | 2 | Door, Nose Wheel Well Aft, RH | | | 45 | | | 3 | Bolt | | | 15 | | | 4 | Washer | | | 20 | | | 5 | Spacer | | | 35 | | | 6 | Washer | | | 25 | | | 7 | Nut | | | 30 | | | 8 | Screw | | | 10 | | | 9 | Washer | 32-22-01 | 01 | 15 | | | 10 | Washer | | | 20 | | | 11 | Washer | | | 25 | | | 12 | Washer | 32-22-04 | 01 | 310 | | | 13 | Nut | | | 315 | | | 14 | Bushing | | | 320 | | | 15 | Washer | | | 305 | | | 16 | Bolt | | | 300 | | | 17 | Door Operator Rod | | | 325 | 2......…........…...................................…...........…......….......1
C. References
(1)
AMM 07-11-02/201, Jacking Airplane Nose
(2)
AMM 09-11-00/201, Towing
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
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