Bumper: Description and Operation

Bumpers

Front Bumper







The front bumper is part of a fully integrated 'soft front end' that satisfies bumper impact requirements. The bumper has a polyurethane cover color-matched to the body and moulded to form an elliptical air intake. The cover is secured to the body via fixings to the fenders and the BIW upper crossmember. The lower section of the cover The cover lower extremity is attached to a GMT undertray fitted to assist air flow through the cooling pack and is supported in the center by clips integral with the overrider covers.

Front Bumper Beam, Mounting Struts and Splitter Vane







Glass mat thermoplastic (GMT) bumper beams are secured by a single bolt and nut to each of two GMT mounting brackets, each of which is in turn attached to the BIW by three bolts and nuts. Aluminum bumper beams installed for certain markets are similarly mounted, but employ menasco energy absorbing struts instead of GMT mounting brackets.

A chromed splitter vane, located centrally in the air intake, is secured to the bumper beam lower face by three rivets. Two polycarbonate overrider covers that fit over the splitter vane and overriders are secured by scrivets to the upper face of the bumper beam.

A plastic air deflector is attached to the undertray in each wheelarch area to improve airflow in the front wheel area.

Left- and right-handed twin circular fog lamps installed in recesses in the lower section of the cover are accessed by removal of the undertray. Side marker lamps fitted to the bumper cover for some markets, serve only as side reflectors for other markets. Side marker lamps/reflectors are pressed in from the outside and unclipped from inside.

Rear Bumper Assembly and Mountings







The rear bumper has a color matched, moulded polyurethane cover mounted on a GMT or aluminum beam dependent upon the market. The beams are respectively mounted on two brackets or energy absorbing menasco struts, each of which is located and secured to the BIW by three bolts.

The bumper cover incorporates integral LH and RH support armatures which engage in guide blocks secured to the body by a captive bolt and a nut. Under low speed impact, this configuration enables the bumper to move forward on the guide blocks, preventing rear body damage.

Rear side marker lamps/reflectors are fitted and removed in the same manner as those at the front.