Subaru 2004 Impreza Service Manual page 28

EXTERIOR/INTERIOR TRIM
Pro-
cess Process name
No.
8 Temporary welding
9 Welding
10 Sanding (II)
11 Masking
Cleaning/
12
degreasing
13 Primer coating
Front Bumper
Grind the side just opposite the beveled area with sand paper (#40 to #60) and clean using a sol-
vent.
Temporarily spot-weld the side, using a PP welding rod and heater gun.
(1) Welded spot (Use heater gun and PP welding rod)
(2) PP base surface
(3) Beveled section
NOTE:
• Do not melt the welding rod until it flows out. This results in reduced strength.
• Leave the welded spot unattended until it cools completely.
Using a heater gun and PP welding rod, weld the beveled spot while melting the rod and dam-
aged area.
(1)
(1) Melt hatched area
(2) Welding rod
(3) Section
NOTE:
• Melt the sections indicated by hatched area.
• Do not melt the welding rod until it flows out, in order to provide strength.
• Always keep the heater gun 1 to 2 cm (0.4 to 0.8 in) away from the welding spot.
• 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 nec-
essary.
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.
Job contents
(1)
(3)
(2)
(3)
EI-26
(2)
(2)
EI-00237
EI-00236
EI-00042