25-11-11
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
FLIGHT COMPARTMENT SEAT TRACKS - INSPECTION/CHECK
_________________________________________________
1. General_______
A. This procedure contains these tasks:
(1)
An examination of each seat track for wear.
(2)
An examination of each seat track for alignment.
TASK 25-11-11-206-004
2. Flight Compartment Seat Tracks - Inspection/Check (Fig. 601)_________________________________________________
A. General
(1)
There are two conditions during which the seat track can become worn:
(a)
Condition 1 - The lock pin rubs on the surface of the seat track while the seat is adjusted.
(b)
Condition 2 - The lock hole becomes larger when the lock pin hits the edge of the lock hole too many times, when the seat is adjusted.
(2)
The seat track is in good condition when:
(a)
The maximum depth of a groove on the surface of the seat track is not more than 0.065 inch for the Condition 1.
(b)
The lock hole is not larger than 0.30 inch in the diameter, and not thicker than 0.1 inch in depth for the Condition 2.
(3)
The seat tracks are correctly aligned if all eight pins of the track setting fixture engage in the holes on the top surface of each seat track by applying only light downward pressure.
B. Equipment
(1) A25020-4 Inspection Gage - Seat Track
C. Access
(1) Location Zones
211/212 Control Cabin - Section 41
D. Procedure
S 226-002
(1) To do a check on the surface of the seat track, do the steps that follow:
(a)
Put the point of the inspection gage in a groove that is on the surface of the seat track.
(b)
If the protrusion touches the surface of the seat track, replace the seat track.
S 226-003
(2) To do a check of the lock hole, do the steps that follow:
(a)
Put the protrusion of the inspection gage in the lock hole.
(b)
If the bottom of the inspection gage touches the surface of the seat track, replace the seat track.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(TOP VIEW)
ALL DIMENSIONS ARE IN INCHES
Inspection Gage - Seat Track
Figure 601
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ALL ú ú 01A Page 602 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A08908
A 737-300/400/500MAINTENANCE MANUAL
INSPECTION OF THE LOCK HOLE
Inspection of Seat Track
Figure 602
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A08910
A
737-300/400/500MAINTENANCE MANUAL
TASK 25-11-11-406-005
3. Flight Compartment Seat Tracks - Installation and Alignment.
___________________________________________________________
A. Equipment
(1) 1T900-0107 Setting Fixture (IPECO P/N) - for seat P/N 3A090-0019 & P/N 3A090-0020 & P/N 3A059.
0T900-0247 Setting Fixture (IPECO P/N) - for seat P/N 3A090-0021 & P/N 3A090-0022.
B. Access
(1) Location Zones
211/212 Control Cabin - Section 41
C. Procedure
S 426-006
(1) Mount the tracks in proper positions. Do not tighten the bolts.
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