Volvo C30 2007 Service And Repair Manual page 186

ACCESSORIES AND EQUIPMENT Bumpers And Mudflaps - Installation Instructions, Accessories
Fig. 130: Identifying Skid Plate And Screws
Courtesy of VOLVO CARS CORPORATION
Tighten the skid plate underneath using existing screws.
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Fig. 131: Drilling Through Holes In Outer Ends Of Skid Plate And Through Air Baffle
Courtesy of VOLVO CARS CORPORATION
Drill through the existing holes in the outer ends of the skid plate and through the air baffle.
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Remove any shavings.
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2012 Volvo C30 T-5