Mazda CX-7 2007 Bodyshop Manual page 135

BODY STRUCTURE [PLASTIC BODY PARTS]
2. Weld the damaged area.
• For repair of a cracked area, melt the crack together with a heat gun and a melting attachment.
Heat gun
Attachment for
melting
• For repair of a hole, degrease the area on
both sides of the bumper and apply aluminium
tape on the reverse side of the damage area.
3. Melt the polypropylene welding rod with a heat
gun and deposit it the cracked area.
B-B,C-C,D-D Section
Melt this area
Note
• Heat the shaded area to melt it.
• Take care not to overly melt welding rod. If the part is welded with the welding rod melted like jelly, the
welding strength will be reduced.
• Hold the heat gun 10—20 mm {0.39—0.79 in} from the part being welded.
• Do not move the welding rod until the welded parts cool.
Polypropylene welding rod
B-B,C-C Section
painted surface
Polypropylene surface
Polypropylene welding rod
A-A Section
Surface
Aluminium tape
Melt together
Section after melting
A-A Section
Aluminium tape
Polypropylene welding rod
Melted area
Polypropylene welding
Top view
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Degrease
09-80E
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Paint
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09-80E–5