Genuine Volvo 780 Control Arm

Volvo 780 Control Arm Parts and Q&A

• Lower Control Arm
  3530450
  Q: How to remove and install components with a focus on the lower Control Arm on Volvo 780?

  A:

  To remove and install components for cars other than the 850, 960 Sedan, and 1998 models, follow these steps. Raise and secure the vehicle, then remove the rear wheels. Use a hydraulic jack to raise the rear axle housing sufficiently to compress the spring and shock and then position a compressor on the spring (leaving at least three coils between the points of attachment). Remove the bolts and nut on the bottom of the shock, lower the rear axle and remove the spring. If equipped, remove the Sway Bar from the Trailing Arms and the axle to frame through bolt that holds the trailing arm to the vehicle body and loosen and remove the through bolt that holds the trailing arm to the rear axle. With the rear axle supported, cut off the trailing arm. For installation, connect the control arm to the axle housing and tighten the bolt finger-tight, and hoist the assembly to position and install the axle-to-frame bolts finger-tight. Install the shock and coil spring, tightening all control arm bolts to 85 ft. lbs. (115 Nm) then reinstall the wheels and lower the vehicle. For the 1992-94 960 sedan, make sure the alignment is correct after removing the parts, raise and prop the car, remove the wheels and remove the protective guard. Remove the retaining bolts for the control arm bracket and the rear control arm bolt and separate the control arm from the wheel bearing housing. Support the arm with jacks, relieve system tension on the Shock Absorber and remove the retaining bolt at the top of the shock. Lower the jacks to release the arm with the spring and shock on and unbolt the shock from the arm and remove the front bracket. Install the control arm bracket properly and tighten the nut and then put on the shock absorber and tighten the bottom mount. Install the bottom spring seat and spring, raising the assembly into position and compressing the spring, and install the shock. Reinstall the control arm bracket bolts and tighten then tap the rear control arm into place and tighten the bolt. Reinstall the protective cover, and installing the wheel, put the vehicle down, and tighten the lugs. For 1995-98 960/S90/V90, make sure the alignment is correct after disassembly, raise the vehicle and support it, and use a compression tool to apply the axle support beam. Compress the suspension a bit and remove the shock absorber mounting bolt and the sway bar. Remove support arm bolts and loosen support arm bracket nut, and then tap support arm off wheel bearing housing. Remove the brake caliper, lower the compression tool and inspect the bushings on the lower control arm. For installation, attach the lower control arm using a new nut and bolt, install the spring and use the compression tool to lift the control arms. Tighten the control arm to the wheel bearing housing and put on the brake caliper. Attach the rear support arm using new bolts and nuts and tighten the rear bolt and front nut and finally the front bolts. Install the shock absorber, lower the sway bar into position, install the wheels, lower the vehicle, tighten the sway bar bolts and check the wheel alignment. For V70 AWD models, jack up and support the vehicle, remove the shocks and spring, remove the support arm from the control arm and remove the control arm. For installation, connect the control arm, install the support arm and tighten the bolt, then re-install the spring and shocks, and lower the vehicle.
• Control Arm, Passenger Side
  1387207
  Q: How to properly install and replace the control arm and bushings on Volvo 780?

  A:

  On all models, fully install the control arm, bounce the suspension several times, and then tighten the control arm-to-crossmember mounting nuts or bolts. For the 240 Series, raise the vehicle and support it safely, remove the wheel(s), disconnect the stabilizer link at the control arm, remove the control arm from the Ball Joint, remove the rear attachment plate, and the front retaining bolt before taking out the control arm. If bushings are to be replaced, note that the right and left bushings are not interchangeable, with the right side bushing turned so that the small slots point horizontally when installed. Install the bracket onto the control arm, ensuring the nut is tightened just enough to hold securely, then attach the control arm, install the front retaining bolt and nut, and guide the stabilizer link into position. Install the ball joint and its mount, tighten the three mounting bolts to specification, install the rear bracket to the vehicle, and tighten the three bolts to 25-35 ft. lbs. (34-48 Nm). Tighten the stabilizer link, install the wheel(s), lower the vehicle, jounce the front of the vehicle up and down to normalize the front suspension, and tighten the rear mount nut to 38-44 ft. lbs. (52-60 Nm) and the front mount to 55 ft. lbs. (75 Nm). For the 700, 900, S90, and V90 Series, raise the vehicle and support it safely, remove the wheel(s), remove the cotter pin and ball joint nut, disconnect the stabilizer link, disconnect the strut bolt, and remove the front bushing. Use a ball joint puller to separate the ball joint from the control arm, unbolt the control arm at the crossmember, and remove the arm. If bushings are to be replaced, use a press to support the arm from below and press in new bushings from the front side. Fit the control arm over the end of the strut rod, install it in the crossmember without fully tightening the nut, install the ball joint, tighten the nut to 44 ft. lbs. (60 Nm), install a new cotter pin, and tighten the strut rod bolt to 70 ft. lbs. (95 Nm). Attach the stabilizer link and tighten it to 63 ft. lbs. (86 Nm), install the wheel(s), lower the vehicle, and jounce the front of the vehicle before tightening the control arm-to-crossmember bolt to 63 ft. lbs. (86 Nm). For the 850, C70, S70, and V70 Series, raise and safely support the vehicle, remove the through-bolt securing the ball joint to the spindle, remove the ball joint from the spindle, and remove the bolts and nuts holding the lower control arm to the frame before removing the lower control arm. Clean the ball joint and subframe where the lower control arm mates, install the lower control arm in the frame with new bolts and nuts, tighten the lower control arm subframe bolts to 48 ft. lbs. (65 Nm) and then angle tighten 120°, apply rustproofing compound to the lower control arm nuts, connect the ball joint to the spindle, and tighten the bolt to 13 ft. lbs. (18 Nm) before lowering the vehicle. For control arm bushing replacement in the 240 Series, raise the vehicle and support it safely, mark the position of the wheel stud nearest to the valve, disconnect the stabilizer link, remove the lower control arm, remove the rear bracket, and drive out the old bushings. When replacing the bushings, ensure the right side bushing is turned so that the small slots point horizontally when installed, install the new bushings onto the control arm, install the bracket, and then install the control arm and stabilizer link before installing the wheel and lowering the vehicle. For the 700, 900, S90, and V90 models, raise and safely support the vehicle, mark the position of the wheel stud nearest to the valve, remove the lower control arm, press out the bushing with a suitable drift, press in the new bushing with a suitable drift using disc 5240 or equivalent as support, install the control arm, install the wheel, and lower the vehicle. For the 850, C70, S70, and V70 Series, raise and safely support the vehicle, remove the wheel(s), remove the control arm, clean the bushing outer sleeves, press out the bushings using tools 5481 and 5482 or equivalent, press in the new bushings using the same tools, install the control arm, install the wheel(s), and lower the vehicle.