The radius rod, bolted between the lower arm and the body or subframe, keeps the control arm in place against the forces of acceleration and braking. The rear or trailing end of the rod is mounted in bushings to allow just a bit of motion in the system. If the bushings wear or fail, the front suspension may be pulled out of position. Noise, tire wear and impaired handling may result from worn or faulty bushings. If the rod is visibly bent, as from someone elevating the car with a jack under the rod, the rod must be replaced.
REMOVAL & INSTALLATION
- Disconnect the negative battery cable. If equipped with an air bag, properly disable the Supplemental Restraint System (SRS), as detailed in Chassis Electrical .
- Elevate and safely support the front of the car.
- Remove the wheel.
- Loosen the nut at the rear of the radius rod. Remove the nut, washers, bushing, etc. Keep them in the correct order for reinstallation.
- Remove the bolts securing the rod to the control arm. Remove the rod.
- Inspect the bushings carefully for wear or deformation. Replace them if any damage is found.
- Fit the rod into place and install the bolts at the control arm. Tighten the bolts to 40 ft. lbs. (55 Nm) on Accords through 1989 and Preludes through 1991. On 1990-95 Accords and 1992-95 Preludes, tighten the bolts to 76 ft. lbs. (105 Nm).
- Install the bushings, washers and spacers on the rod. Install a new locking nut. On all except 1992-95 Preludes, tighten the end nut to 33 ft. lbs. (44 Nm). On 1992-95 Preludes, tighten the nut to 40 ft. lbs. (55 Nm).
- Install the wheels and lower the vehicle.
- Properly enable the SRS system, if equipped, and connect the negative battery cable.