A jig for assisting attachment and removal of a bolt, the bolt being inserted into a center hole of an inner cylinder included in a carrier bush and bolt holes opposed to each other to fasten a carrier and a lower arm, the bolt holes being provided in the lower arm, the jig having a base held in contact with a bottom surface of the lower arm, a fitting portion provided on the base to position the base with respect to the lower arm, and inner cylinder guides that are penetrable into an inner tip portion of the lower arm, and the inner cylinder guides have support grooves for supporting both ends of the inner cylinder, and a center line of the inner cylinder coincides with a center line of the bolt holes of the lower arm when the support grooves support the inner cylinder.

A control arm for a wheel suspension of a motor vehicle. The control arm including a base body having a spring seat for receiving a helical spring of the wheel suspension. The control arm having a first end region connected to a spring-loaded component of the motor vehicle and a second end region connected to an unsprung component of the motor vehicle. The base body includes a first partial shell composed of steel and a second partial shell composed of a composite material, the shells undetachably fixedly connected to one another at least in one region of the spring seat.

The present invention relates to a spring link for a motor vehicle, wherein the spring link is produced as an elongated, deformed hollow profile of open cross section made of a steel material and has respective attachment points at its ends, said spring link being characterized in that the spring link, in the installed position, is arranged with its opening of the hollow profile pointing upward, wherein a spring seat plate for receiving a helical compression spring is coupled to the spring link on and/or partially in the opening.

A suspension assembly for a vehicle includes a lower alignment arm, an upper alignment arm, and a linear force element. The lower alignment arm includes a first portion, second portion, a third portion, and a linear force element mount. The linear force element mount includes a bearing for pivotably coupling the linear force element to the lower alignment arm.