20-11-28
ALL ú ú 01 Page 404 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
Locking Pins - Installation
Figure 403
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
20-11-28
ALL ú ú 01 Page 405 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 424-005
(4) To install cotter pins (Fig. 403), do the applicable step:
(a)
For castellated nuts, install the pin with the head parallel to the slot in the nut. Bend cotter pin ends to the bolt end or to the castellated nuts slit adjacent to the pin end.
(b)
For clevis pins, put the pin through the hole on the bolt. Bend the pin ends around the side of the bolt.
(c)
For non-castellated nuts, install the pin through the hole on the bolt. Bend the pin ends back on each side of the bolt approximately 90 degrees.
S 424-006
(5) To install lock rings (Fig. 403), do these steps:
(a)
Put the bent hook of the lock ring into an aligned locking hole in the shaft and nut but do not spring the ring.
(b)
Move the lockring above the flange into the groove with minimum expansion of the lockring.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
20-11-28
ALL ú ú 01 Page 406 ú Oct 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
SEALS ON OPEN ELECTRICAL TERMINALS IN FUEL VAPOR AREAS -
______________________________________________________ MAINTENANCE PRACTICES
_____________________
1. General_______
A. This procedure contains one task. The task is to seal the open
electrical terminals and connections in fuel vapor areas.
B. When you replace or install components on the lighting systems in fuel vapor areas, seal these open items:
-Lamp terminals
-Terminal strips
-Circuit breakers
-Transformers
-Switches
-Hardwire
-Wire junctions.
Lamp terminals with a rubber sleeve are open.
C. Do not seal the dual grounds in fuel vapor areas or the wire junctions in fuel tanks.
D. Do not seal the generator terminals on the engines or APU.
E. Install wire and protectors on all secondary switch leads and seal all secondary switch terminals in the fuel vapor areas. Insulated splices are not open.
F. To identify fuel vapor areas, see Fig. 201.
TASK 20-11-29-202-007
2. Seal the Open Terminals_______________________
A. Equipment
(1) Paint brush, 1-inch wide - Commercially
Available
B. Consumable Materials
(1)
B00083 Aliphatic Naphtha - TT-N-95
(2)
Use a sealant and the primer that goes with
that sealant from Table 1.
~............................................................... | SEALANT | | ................................................................. |BMS 5-26 TYPE II | | ................................................................. |BMS 5-37 | | ................................................................. |BMS 5-95 | | ................................................................. |BMS 5-142 | | ................................................................. | | | 2..............................…................................1
TABLE 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
20-11-29
ALL ú ú 01 Page 201 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
C. Procedure
S 112-002
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 STANDARD PRACTICES - AIRFRAME(82)
