Ball Joints - Upper and Lower

Complete replacement of upper and lower ball joints on the front suspension of a 2005 Dodge Viper, including removal of control arms and pressing out/in ball joints.

Warnings

Tools required

Parts

• Upper ball joint (per side) × 2 — Use OEM specification
• Lower ball joint (per side) × 2 — Use OEM specification
• Cotter pins for ball joint castellated nuts × 4 — Use OEM specification
• Pinch bolt (if reusing is not recommended) × 2 — Use OEM specification

Preparation

1. Park vehicle on level surface and set parking brake
2. Place wheel chocks behind rear wheels
3. Loosen front wheel lug nuts while vehicle is on ground
4. Raise front of vehicle and support securely on jack stands at manufacturer-recommended lift points
5. Remove front wheels completely
6. Spray all ball joint nuts, pinch bolts, and control arm fasteners with penetrating oil and allow to soak for 10-15 minutes

Procedure

1. 1

   Disconnect upper ball joint from knuckle
   Locate the upper ball joint nut at the top of the steering knuckle. Remove the cotter pin by straightening the ends and driving it out with a pin punch. Using a wrench or socket, remove the castellated nut from the upper ball joint stud. If the stud spins, hold it with locking pliers on the exposed portion. Once the nut is removed, use a pickle fork or ball joint separator to break the taper between the ball joint stud and the knuckle. Insert the separator between the control arm and knuckle, then strike with a hammer or tighten the separator tool until the joint releases. The knuckle will drop slightly when the taper is broken.
2. 2

   Disconnect lower ball joint from knuckle
   Locate the lower ball joint at the bottom of the steering knuckle where it connects to the lower control arm. Remove the cotter pin from the castellated nut. Remove the ball joint nut using a socket and breaker bar. Support the knuckle and brake assembly with a bungee cord or wire to prevent strain on the brake hose. Use a ball joint separator to break the taper between the lower ball joint stud and the knuckle. The knuckle assembly can now be moved aside, still attached to the brake caliper and rotor.
3. 3

   Remove upper control arm
   Locate the upper control arm mounting fasteners securing the arm to the frame brackets (confirm exact count and configuration in the FSM). These fasteners pass through the control arm bushings. Mark or note the position of any alignment shims or cams present at the mounting points, as these affect wheel alignment. Remove both control arm mounting bolts completely. Carefully remove the upper control arm from the vehicle, keeping track of any shims or washers for reinstallation in the same positions.
   ℹ️Photograph or mark the exact position of alignment shims/cams before removal to minimize alignment change.
4. 4

   Remove lower control arm
   Disconnect the sway bar link from the lower control arm if it interferes with arm removal. The link typically has a nut on a stud with an Allen key provision to prevent spinning. Locate the lower control arm mounting fasteners at the frame rail (confirm exact count and configuration in the FSM). These are typically larger diameter bolts passing through the control arm bushings. Remove all mounting bolts completely. Extract the lower control arm from the vehicle. Note the orientation of the arm for proper reinstallation.
5. 5

   Press out old upper ball joint
   Secure the upper control arm in a vise or on a stable work surface. Identify the upper ball joint attachment method in the control arm (verify in the FSM whether it is press-fit, riveted, or bolted, as this determines the removal procedure). The ball joint is pressed into a bore in the control arm and may have a retaining ring. If a snap ring or retaining clip is present, remove it using snap ring pliers. Set up the ball joint press with the appropriate receiving cup to support the control arm around the ball joint bore, and a driver that contacts only the ball joint body (not the stud). Apply steady pressure with the press to drive the old ball joint out of the control arm. Clean the ball joint bore thoroughly with a wire brush, removing all rust, debris, and old material.
6. 6

   Press in new upper ball joint
   Inspect the ball joint bore in the control arm for damage or excessive wear. Apply a light coat of anti-seize compound to the outer diameter of the new ball joint housing. Position the new upper ball joint in the control arm bore, ensuring correct orientation (stud pointing in the proper direction). Set up the ball joint press with a driver that contacts only the outer race of the ball joint, and a receiving cup supporting the control arm. Press the ball joint into the arm until it is fully seated against the shoulder in the bore. Install any retaining snap ring or clip if equipped. Verify the ball joint is fully seated and secure.
7. 7

   Press out old lower ball joint
   Secure the lower control arm in a vise. Locate the lower ball joint and verify its attachment method in the control arm (press-fit, riveted, or bolted per the FSM), as this determines the removal procedure. Remove any snap ring or retaining clip if present. The lower ball joint is typically larger than the upper. Set up the ball joint press with appropriate cups and driver. Press the old lower ball joint out of the control arm using steady pressure. Clean the ball joint bore thoroughly with a wire brush and inspect for damage.
8. 8

   Press in new lower ball joint
   Apply anti-seize compound to the outer diameter of the new lower ball joint. Position the new ball joint in the control arm bore with correct orientation. Using the ball joint press with proper adapters, press the new ball joint into the arm until fully seated. Install any retaining snap ring or clip. Verify full seating and that the ball joint boot is not damaged or twisted.
9. 9

   Reinstall lower control arm
   Position the lower control arm with new ball joint into the frame mounting location. Insert both control arm mounting bolts through the bushings and frame brackets, but do not fully tighten yet. Thread the bolts in just enough to hold the arm securely in position. These bolts must be torqued with vehicle weight on the wheels to properly pre-load the bushings. Reconnect the sway bar link to the lower control arm if it was disconnected.
10. 10

    Reinstall upper control arm
    Position the upper control arm with new ball joint into the frame mounting location. Install any alignment shims or cams in their original positions as marked during removal. Insert both mounting bolts through the control arm bushings and frame brackets. Thread the bolts in to hold the arm in position, but do not fully tighten yet. These will be torqued with vehicle weight on the wheels.
11. 11

    Connect ball joints to steering knuckle
    Position the steering knuckle and brake assembly back into place between the upper and lower control arms. Clean the ball joint stud tapers and knuckle bores with a wire brush. Insert the lower ball joint stud into the knuckle bore first. Install the castellated nut and tighten to specification. Install the upper ball joint stud into the upper knuckle bore. Install the castellated nut and tighten to specification. Ensure both nuts align with cotter pin holes. If necessary, tighten nuts slightly beyond torque specification to align with the next cotter pin hole (never loosen to align). Install new cotter pins through the castellated nuts and ball joint studs, bending the ends to secure. Note: Install the lower ball joint stud into the knuckle bore first. Install the retaining nut and tighten to specification (verify whether the design uses a castellated nut with cotter pin or a prevailing-torque locknut per the FSM). Note: Ball joint stud nut torque specifications for the 2005 Viper must be obtained from the factory service manual; do not use assumed values.
    Torque spec

    Ball Joint Nut88 Nm (65 lb-ft)
12. 12

    Reinstall wheels and lower vehicle
    Install the front wheels and thread lug nuts on by hand. Lower the vehicle until the tires just contact the ground but the suspension is not yet loaded. Tighten the wheel lug nuts in a star pattern to specification using a torque wrench.
    Torque spec

    Wheel Lug Nuts142.4 Nm (105 lb-ft)
13. 13

    Torque control arm bolts with vehicle weight on wheels
    With the vehicle now resting on the ground with full weight on the wheels, torque all control arm mounting bolts. This includes both upper control arm bolts and both lower control arm bolts. Torque each bolt to specification. This step is critical for proper bushing pre-load and longevity. If the sway bar link was disconnected, torque the link nuts to specification while holding the stud with an Allen key to prevent spinning.
    Torque spec

    Control Arm Bolts165 Nm (122 lb-ft)

    Sway Bar Link Nuts55 Nm (41 lb-ft)

Reassembly

1. All ball joint cotter pins must be new and properly installed with ends bent to prevent backing out
2. Control arm bolts must be torqued with vehicle weight on wheels to ensure proper bushing pre-load
3. Verify all fasteners are torqued to specification before driving the vehicle
4. Alignment shims and cams must be reinstalled in original positions; professional alignment is strongly recommended after ball joint replacement

Verification

• Verify all cotter pins are properly installed and secured in ball joint castellated nuts
• Confirm all control arm mounting bolts were torqued with vehicle weight on wheels
• Check that wheel lug nuts are torqued to specification
• Inspect ball joint boots for damage or improper seating
• Test steering for smooth operation and proper return to center
• Road test at low speed in a safe area to verify no abnormal noises or handling issues
• Have vehicle alignment checked and adjusted by a professional alignment shop

More procedures for this vehicle