ISUZU Amigo/Pick-ups/Rodeo/Trooper 1981-1996

Upper Control Arms

Print

REMOVAL & INSTALLATION



See Figures 1 and 2



Click image to see an enlarged view

Fig. Fig. 1: Upper control arm and components-Rodeo



Click image to see an enlarged view

Fig. Fig. 2: Upper control arm and components-Hombre

  1. Raise and support the front of the vehicle safely by placing jackstands securely under the lower control arms. Because the vehicle's weight is used to relieve tension on the upper control arm, the floor stands must be positioned between the seats and the lower control arm ball joints for maximum leverage.
  2.  


CAUTION
Make sure the jackstands are firmly positioned and cannot move, or personal injury could result.

  1. Remove the tire and wheel assembly.
  2.  
  3. Remove the brake caliper and support it from the vehicle with wire. Make sure the brake line is not stretched or damaged and that the caliper's weight is not supported by the line.
  4.  
  5. Remove the cotter pin and retaining nut from the upper ball joint.
  6.  
  7. Position J-23742 or an equivalent ball joint separator tool between the upper joint stud and the control arm. Use the tool to separate the upper ball joint from the steering knuckle. Pull the steering knuckle free of the ball joint after removal.
  8.  

After separating the steering knuckle from the upper ball joint, be sure to support the steering knuckle/hub assembly to prevent damaging the brake hose.

  1. Remove the upper control arm-to-frame nuts and bolts, then lift and remove the upper control arm from the vehicle.
  2.  

If equipped with shims between the pivot shaft and vehicle body, tape the shims together and identify them to assure that they are re-installed in the same place.

  1. Clean and inspect the steering knuckle hole. Replace the steering knuckle if any out of roundness is noted.
  2.  
  3. Remove the pivot shaft if needed.
  4.  

To install
  1. If removed, position the pivot shaft to the control arm and install. Loosely install the bushing retaining nuts and washers.
  2.  
  3. Loosely install the control arm to the frame using the bolts and nuts. Position the shims between the control arm and vehicle body, if equipped, then tighten the retainers to 45 ft. lbs. (60 Nm) for 1981-86 models, or to 65 ft. lbs. (88 Nm) for 1987-96 vehicles.
  4.  
  5. Install the ball joint to the steering knuckle. Make sure the joint is seated, then install the stud nut and tighten to specification. Install a new cotter pin.
  6.  

When installing the cotter pin, never loosen the castle nut to expose the cotter pin hole.

  1. Reposition and secure the brake caliper.
  2.  
  3. Install the tire and wheel assembly.
  4.  
  5. Remove the jackstands and carefully lower the vehicle.
  6.  
  7. If the control arm bushings were replaced on 1981-86 vehicles, tighten the pivot shaft nuts to 65 ft. lbs. (88 Nm).
  8.  
  9. Check and adjust the front end alignment, as necessary.
  10.  

BUSHING REPLACEMENT



See Figures 3, 4, 5 and 6



Click image to see an enlarged view

Fig. Fig. 3: Upper control arm, pivot shaft and bushing components-Hombre



Click image to see an enlarged view

Fig. Fig. 4: Pressing out the bushing-Amigo



Click image to see an enlarged view

Fig. Fig. 5: A clamp-type bushing installation tool being used to remove the control arm bushing-Hombre



Click image to see an enlarged view

Fig. Fig. 6: Using a press to install a replacement bushing

  1. Remove the control arm from the vehicle.
  2.  
  3. Mount the control arm in a soft jawed vise. Remove the pivot shaft nuts, washers and shaft.
  4.  
  5. Use either a press or a control arm bushing fixture (C-clamp like tool) along with a slotted washer and a piece of pipe (slightly larger than the bushing) and press out the old bushing.
  6.  
  7. Clean the inside bushing contact surfaces of rust and old rubber.
  8.  

To install
  1. Apply a light coating of grease to both the replacement busing and bushing contact surfaces on the control arm.
  2.  
  3. Position a pivot shaft to the control arm and install the bushing using the press tool. A bushing install clamp can also be used to compress the bushing into the control arm.
  4.  
  5. Install the pivot shaft.
  6.  
  7. Loosely install the bushing retaining nuts and washers.
  8.  
  9. Install the control arm on the vehicle. Tighten the pivot shaft retainer nuts to 80 ft. lbs. (108 Nm).
  10.  

 
label.common.footer.alt.autozoneLogo