31-41-07
ALL ú ú 01 Page 402 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
1. FRICTION PADS
1. FRICTION PADS
In-Axle Mount Rings
Figure 402
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31-41-07
ALL ú ú 02 Page 403 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 114-061
(5)
Clean the inner surface of the axle from the end of the axle to the outboard IAM ring.
S 494-007
(6)
Install the IAM installation tool (Fig. 403):
CAUTION: DO NOT TURN THE WORMSHAFT AFTER THE PEG TOUCHES THE STOP.
_______
TOO MUCH FORCE CAN CAUSE DAMAGE.
(a) Turn the wormshaft in the EXPAND direction (counterclockwise) until the peg (8) touches the stop (9) (Fig. 403, Sheet 2, View A).
NOTE: You can see the stop through the view window (7) in
____ the rear cover plate of the tool (6).
(b)
Turn the wormshaft 2-1/2 turns in the COMPRESS direction (clockwise).
(c)
Remove the T-handle ball pin (7, Fig. 404).
(d)
Carefully put the tool into the axle and through the IAM rings.
NOTE: It can be necessary to turn the wormshaft in one of the
____ two directions to make the tool jaws (2, Fig. 403) fit into the IAM rings.
(e) Align the tool collar key (5, Fig. 404)) with the axle keyway (2).
NOTE: If too much force is necessary to insert the tool, the
____ cause can be too much green primer inside the axle.
(f) Turn by hand the two cross bolts with the washers through the axle into the holes (4) in the tool collar directly opposite each other.
NOTE: Use MS16997-43 and MS15795-810 or their equivalent if
____ the axle nut is not in its position.
(g) Put the T-handle ball pin in the tool gear box to make the box level.
NOTE: The top of the box must be perpendicular to the landing
____
gear strut.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 024-052
(7) Remove the in-axle mount:
CAUTION: DO NOT TURN THE WORMSHAFT AFTER THE PEG TOUCHES THE STOP.
_______ TOO MUCH FORCE CAN CAUSE DAMAGE.
(a)
Turn the wormshaft in the COMPRESS direction (clockwise) until the peg touches the stop (Fig. 403, Sheet 2, View B).
(b)
Remove the two cross bolts and washers from the tool collar.
(c)
Carefully pull the tool and the IAM rings out of the axle.
(d)
Turn the wormshaft in the EXPAND direction (counterclockwise) until you can remove the IAM rings from the tool.
(e)
Remove the rings from the installation tool.
NOTE: Rings that you remove cannot be put back in the axle
____ unless new friction pads are installed.
(f) Remove the friction pads (1, Fig. 402): 1) Remove sealant in friction pad holes to expose screws. 2) Remove flat head screws that attach friction pads. Discard
screws. 3) Remove friction pads by lifting corners using a pry bar in holes at friction pad corners.
TASK 31-41-07-424-032
3. In-Axle Mount Installation
__________________________
A. Special Tools and Equipment
(1)
IAM Installation Tool
Honeywell P/N 4065501
(2)
Boeing BMS 10-20 corrosion inhibitive primer
B. References
(1)
AMM 07-11-03/201, Jacking Airplane Axles
(2)
AMM 09-11-00/201, Towing
(3)
IPC 31-41-05 Fig. 1
C. Access
(1) Location Zone
715 Nose Landing Gear
D. Procedure
S 494-065
WARNING: MAKE SURE THE GROUND LOCKS ARE INSTALLED ON ALL THE LANDING
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