Cracked Panels; Applying Resin To Fiberglass; Typical Scratched Panel - Chevrolet 10 1971 Series Chassis Service Manual

Fig. 55— Applying Resin to Fiberglass
1. Remove all paint down to the plastic from the area
surrounding the scratch.
2. Featheredge the repair area with No. 220 wet or
dry sandpaper and finish block sand with No, 320
wet or dry paper, Figure 58.
Do_ not sand too deeply into fiber
CAUTION:
glass mat. Should it be necessary to cut fairly
deep into the glass mat use the repair pro­
cedure suggested for dents and pits in plastic
panels.
3. Clean up repair area using Prep-Sol or equivalent,
then finish the clean-up with a tack rag.
4. Protect surrounding panels by masking before per­
forming paint refinishing operations. Use only non­
staining type masking tapes.
5. Refinish panel.
Dents or Pits in Panels, Cracks in Glaze Coat
Figure 59 shows a panel which has received a heavy
glancing blow, resulting in an indentation or large pit
in the panel. The following procedure is advised for a
repair of this type of damage. Cracks in the glaze or
finish coat of plastic and paint may also use this
procedure.
This repair may be used wherever the
NOTE:
damage is not extensive and the plastic is not
pierced, but the damage area does require a
plastic build-up.
Fig. 5 6 — A pplying Laminate to Body
Fig. 57— Typical Scratched Panel
1. Remove paint dov/n to the plastic from area sur­
rounding the damage.
2. Scuff area surrounding damaged area to provide a
good bonding surface.
3. Clean up work area with Prep-Sol or equivalent then
use tack rag for finish clean-up.
4. Use the Plastic Solder Repair or equivalent (pre­
viously described) to fill the imperfections.
5. Feather-sand damaged area with No. 220 sandpaper
and finish sand with No. 320.
6. Prepare repair area for paint refinishing operation.

Cracked Panels

For best results, temperature should be
NOTE:
at least 70°-75°F.
1. In the case of a cracked panel, such as shown in Fig­
ure 60, cut along the break line with a hacksaw blade
and remove broken portion of the panel.
2. Remove the paint down to the plastic from both
portions of the panel.
Fig. 5 8 — Repair Area Finish Sanded
BODY 1-23
10-30 CHEVROLET TRUCK SERVICE MANUAL