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 TM 9-2320-303-24-2
CAB BODY REPAIR - CONTINUED
0289 00
ALUMINUM REPAIR - CONTINUED
Table 8. Stop Drill Sizes for Negligible Cracks.
Sheet Thickness
Minimum Stop Drill
(in)
Size No.
0-0.032
40
0.033 and thicker
30
7.
Repair by Patching.
a.
Most body panel damage that exceeds limits of negligible damage may be repaired by patching. This procedure
involves removal of damaged area (3) and application of a patch (4) to cover the area.
b.
The damaged area (3) is prepared by removal of the damage followed by rounding or smoothing of all corners and
edges. This helps ensure that cracks will not spread into undamaged areas.
c.
In the case of a large crack (5), it may be desirable to stop-drill crack rather than cut out a portion of a panel (8) or
structural member.
d.
Repair is completed by applying a large overlapping patch (6) over the area that was damaged. The overlap must
be sufficient to allow the observance of proper rivet edge distance (7) (refer to Rivet Patterns on page 0289 00-10).
3
4
6
5
8
7
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