TM-9-2320-280-34
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1996
TM-9-2320-280-34 - Page 1054 of 1258
TM 9-2320-280-34
Change 1
2 2 - 1 6 . 1
NOT E
Complete, detailed procedures for fiberglass repair are provided
with repair kit, MIL-R-19907C.
c. Repair
1.
Repairing cracks or splits.
( a )
Using sandpaper, remove dirt and paint 3-4 in. (8-10 cm) around area of crack.
( b )
Rough sand surface to which mat will be added; underside of surface if possible. Surface must be dry.
( c )
Bevel edges of crack in a broad “V”.
( d )
Cut a piece of mat and apply to underside of surface with resin mixture. Extend patch beyond break
about 2 in. (5 cm). Press patch firmly into place. Saturate patch with additional layer of resin and then allow 1 to 3
hours to cure.
( e )
At the same time, cover top exposed surface with resin, allowing 1 to 3 hours to cure.
( f )
For stressed areas, lightly sand first patch and add another patch layer, repeating steps 1.d and 1.e.
( g )
Finish sand exposed surface.
( h )
Prime and paint.
2
.
Repairing holes.
( a )
Remove damaged material. Bevel edges approximately 20° at outside edge of hole.
( b )
Remove dirt and paint in area of hole extending away 3-4 in. (8-10 cm), using sandpaper.
( c )
Rough sand top and underside of surface to which mats will be added.
( d )
Cut two same sized pieces of fiberglass mat that will extend past edge of hole about 2 in. (5 cm).
( e )
Coat both top and underside surface and saturate both pieces of mat with the resin mixture.
(
f
)
When tacky, apply one mat to the inner surface and one to the outer surface. Press the two patches together.
( g )
Allow 1 to 3 hours to cure. Additional coats of resin may be added if necessary for appearance purposes.
Sand lightly between coats.
( h )
Finish sand exposed surface.
(
i )
Prime and paint.
WARNING
When sanding fiberglass, personal protective equipment (respirator,
goggles/shield, gloves, coveralls, etc.) must be used. Failure to do this
may result in injury.
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