Subaru Legacy 2002 Service Manual page 3073

Exterior/Interior Trim
Process
Process name
No.
9 Welding
10 Sanding (II)
11 Masking
Cleaning/
12
degreasing
13 Primer coating
14 Leave unattended.
Primer surfacer
15
coating
16 Drying
17 Sanding (III)
Cleaning/
18
degreasing
FRONT BUMPER
Using a heater gun and PP welding rod, weld the beveled spot while melting the rod and dam-
aged area.
NOTE:
¼ Melt the sections indicated by hatched area.
¼ Do not melt welding rod until it flows out, in order to provide strength.
¼ Always keep the heater gun 1 to 2 cm (0.4 to 0.8 in) away from the welding spot.
¼ Leave the welded spot unattended until it cools completely.
Remove excess part of weld with a putty knife. If a drill or disc wheel is used instead of the
knife, operate it at a rate lower than 1,500 rpm and grind the excess part little by little. A
higher rpm will cause the PP substrate to melt from the heat.
Sand the welded spot smooth with #240 sand paper.
Mask the black substrate section using masking tape.
Recommended masking tape: Nichiban No. 533 or equivalent
Completely clean the entire coated area, using solvent similar to that used in Process No. 4.
Apply a coat of primer to the repaired surface and its surrounding areas. Mask these areas, if
necessary.
Recommended primer: Mp/ 364 PP Primer
NOTE:
Be sure to apply one coat of primer at a spraying pressure of 245 to 343 kPa
2
(2.5 to 3.5 kg/cm , 36 to 50 psi) with a spray gun.
Leave the repaired area unattended at 20°C (68°F) for 10 to 15 minutes until primer is half-
dry.
NOTE:
If dirt or dust comes in contact with the coated area, wipe it off with a cloth dampended with
alcohol. (Do not use thinner since the coated area tends to melt.)
Apply a coat of primer surfacer to the repaired area two or three times at an interval of 3 to 5
minutes.
Recommended surfacer:
¼ UPS 300 Flex Primer
¼ No. 303 UPS 300 Exclusive hardener
¼ NPS 725 Exclusive Reducer (thinner)
¼ Mixing ratio: 2 : 1 (UPS 300: No. 303)
¼ Viscosity: 12 — 14 sec/20°C (68°F)
¼ Coated film thickness: 40 — 50µ
Allow the coated surface to dry for 60 minutes at 20°C (68°F) [or 30 minutes at 60°C (140°F)].
Sand the coated surface and its surrounding areas using #400 sand paper and water.
Same as Process No. 12.
EI-18
Job contents
G5M0167
G5M0168