🔧 Forte - Front Lower Ball Joint Replacement

Assumption: This procedure covers both front lower ball joints on your Forte. The ball joints are built into the lower control arms, so replace the complete control-arm assemblies rather than pressing out the joints.

Each control arm connects the steering knuckle to the front subframe and lets the suspension move safely. A worn ball joint can cause clunking, wandering steering, uneven tire wear, or separation of the wheel from the suspension.

Difficulty Level: Advanced | Estimated Time: 3-5 hours

---

⚠️ Safety & Precautions

• ⚠️ Do not drive your Forte if the ball joint has excessive movement or appears ready to separate.
• ⚠️ Support the vehicle with jack stands. Never work beneath a vehicle supported only by a floor jack.
• ⚠️ Keep the steering knuckle supported so the brake hose and ABS sensor wire are not stretched.
• ⚠️ A ball-joint separator can release the tapered stud suddenly. Wear eye protection and keep hands clear.
• ⚠️ Final-tighten the control-arm pivot bolts at normal ride height. Tightening them with the suspension hanging can damage the rubber bushings.
• ⚠️ Do not use heat near the ball joint, rubber bushings, brake hose, or wheel-speed sensor wiring.
• 🔋 Battery disconnection is not required.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 3-ton floor jack
• 3-ton jack stands
• Rubber wheel chocks
• Safety glasses
• Mechanic gloves
• 1/2-inch drive breaker bar
• 1/2-inch drive ratchet
• 3/8-inch drive ratchet
• 1/2-inch drive torque wrench (30-250 Nm)
• 21mm deep impact socket
• 19mm six-point socket
• 17mm six-point socket
• 19mm combination wrench
• 17mm combination wrench
• 6mm hex-bit socket
• Ball-joint separator (specialty)
• Small needle-nose pliers
• 12-inch adjustable pry bar
• 16-ounce ball-peen hammer
• Brass wire brush
• Paint marker
• Penetrating oil
• Medium-strength threadlocker
• Hydraulic jack with rubber saddle pad

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front lower control arm with ball joint, left - Qty: 1
• Front lower control arm with ball joint, right - Qty: 1
• Front lower ball-joint self-locking nuts - Qty: 2
• Front lower control-arm pivot bolts and self-locking nuts - Qty: 1 set

Replace in pairs: Replacing both front control arms keeps ball-joint and bushing condition consistent from side to side.

---

📋 Before You Begin

• 🅿️ Park your Forte on firm, level ground. Center the steering wheel, select Park, apply the parking brake, and switch off the ignition.
• 🛞 Place rubber wheel chocks securely behind both rear tires.
• 📏 Arrange a four-wheel alignment immediately after the repair. Replacing control arms can alter wheel alignment.
• 🧰 Spray penetrating oil on the ball-joint nuts and control-arm fasteners. Allow it to soak before loosening them.
• 📱 No infotainment service mode, scan-tool command, EPB retraction, battery registration, or ADAS calibration mode is required.
• 🔩 Check replacement arms before lifting the vehicle. The ball-joint stud, bushings, and mounting points must match the removed assemblies.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the front wheel nuts

• Use the 21mm deep impact socket and 1/2-inch drive breaker bar to loosen each front wheel nut about one-quarter turn.
• Do not remove the nuts while the vehicle is resting on the ground.

Step 2: Raise and support the vehicle

• Use the 3-ton floor jack beneath the reinforced front-center lifting point to raise your Forte.
• Position the 3-ton jack stands beneath the left and right reinforced pinch-weld support points.
• Lower the vehicle onto the stands, then gently push the body to confirm it is stable.
• Leave the 3-ton floor jack lightly touching the front lifting point as secondary support.

Step 3: Remove both front wheels

• Use the 21mm deep impact socket and 1/2-inch drive ratchet to remove the wheel nuts.
• Lift off both wheels and place them flat away from the work area.

Step 4: Support the steering knuckle

• Place the hydraulic jack with rubber saddle pad beneath the outer end of the control arm.
• Raise it only enough to support the assembly. Do not lift your Forte off the jack stand.
• Inspect the brake hose and ABS wire so neither can become stretched.

Step 5: Disconnect the stabilizer link if it blocks removal

• If the stabilizer link attaches to or obstructs the control arm, use the 17mm combination wrench and 6mm hex-bit socket to remove its lower nut.
• The stabilizer link joins the left and right suspension through the anti-roll bar.
• Move the link aside without damaging its rubber boot.

Step 6: Remove the ball-joint nut

• Use the brass wire brush to clean exposed threads.
• If a cotter pin is fitted, straighten and remove it with the small needle-nose pliers.
• Use the 19mm six-point socket and 1/2-inch drive breaker bar to loosen and remove the ball-joint nut.
• Keep the hydraulic jack with rubber saddle pad beneath the arm while working.

Step 7: Separate the ball joint from the knuckle

• Fit the ball-joint separator between the steering knuckle and ball-joint stud, then tighten the separator until the tapered stud releases.
• A tapered stud is a cone-shaped shaft that locks tightly inside the knuckle.
• If needed, tap the side of the knuckle boss with the 16-ounce ball-peen hammer. Do not strike the stud, boot, brake rotor, or aluminum components.
• Lower the hydraulic jack with rubber saddle pad slowly, then guide the stud out with the 12-inch adjustable pry bar.
• Expect a sharp pop when it releases.

Step 8: Mark and loosen the control-arm fasteners

• Use the paint marker to mark the orientation of the front and rear control-arm fasteners.
• Use the correctly fitting 17mm or 19mm six-point socket, matching combination wrench, and 1/2-inch drive breaker bar to loosen the front pivot bolt and rear bushing fastener.
• Use only the socket that fits fully and tightly. Fastener head sizes can differ between original and replacement hardware.

Step 9: Remove the old control arm

• Use the 17mm or 19mm six-point socket and matching combination wrench to remove the pivot fasteners.
• Support the arm with one hand, then use the 12-inch adjustable pry bar to ease the bushings from the subframe brackets.
• Remove the complete control arm and ball-joint assembly.
• Do not pry against a brake line, steering rack boot, or subframe seam.

Step 10: Compare the replacement arm

• Place the old and new arms side by side and visually compare their length, mounting sleeves, ball-joint stud, and left- or right-side shape.
• Use the brass wire brush to remove loose rust and dirt from the mounting brackets.
• Do not apply grease to the ball-joint taper or the corresponding hole in the steering knuckle.

Step 11: Install the replacement control arm

• Position the replacement arm in the subframe brackets by hand.
• Insert the new pivot bolts and nuts in their original orientation. Use the 17mm or 19mm six-point socket and matching combination wrench to make them snug only.
• Do not final-tighten the rubber-bushing fasteners while the suspension is hanging.
• Guide the ball-joint stud into the steering knuckle using the hydraulic jack with rubber saddle pad.

Step 12: Tighten the ball-joint connection

• Install a new self-locking ball-joint nut.
• Use the 19mm six-point socket and 1/2-inch drive torque wrench to tighten the ball-joint nut to 59-71 Nm (44-52 ft-lbs).
• If the replacement design uses a castellated nut, continue tightening only enough to align the next slot, then install its new cotter pin with the small needle-nose pliers. Never loosen the nut to align it.

Step 13: Reconnect the stabilizer link

• If removed, insert the link into its mounting point.
• Apply a small amount of medium-strength threadlocker only if the replacement-link instructions permit it.
• Use the 17mm combination wrench, 6mm hex-bit socket, and 1/2-inch drive torque wrench to tighten the stabilizer-link nut to 98-118 Nm (72-87 ft-lbs).
• Keep the link boot from twisting while tightening.

Step 14: Repeat on the opposite side

• Repeat Steps 4 through 13 using the same listed tools.
• Do not interchange the left and right control arms.

Step 15: Load the suspension to normal ride height

• Use the hydraulic jack with rubber saddle pad beneath the outer end of each control arm to raise the suspension.
• Use the paint marker reference and raise the arm until the hub-to-fender position approximates normal ride height.
• Confirm your Forte remains firmly supported by the 3-ton jack stands.

Step 16: Final-tighten the control-arm pivots

• Use the appropriate 17mm or 19mm six-point socket, matching combination wrench, and 1/2-inch drive torque wrench.
• Tighten the front control-arm pivot fastener to 98-118 Nm (72-87 ft-lbs).
• Tighten the rear control-arm bushing fastener to 157-177 Nm (116-131 ft-lbs).
• Slowly lower the hydraulic jack with rubber saddle pad after both fasteners are tightened.

Step 17: Install the front wheels

• Fit each wheel and hand-start all wheel nuts.
• Use the 21mm deep impact socket and 1/2-inch drive ratchet to snug the nuts in a star pattern.
• Use the 3-ton floor jack to raise your Forte, remove the 3-ton jack stands, and lower the tires to the ground.
• Use the 21mm deep impact socket and 1/2-inch drive torque wrench to tighten the wheel nuts in a star pattern to 88-108 Nm (65-80 ft-lbs).

---

✅ After Repair

• 🔍 Check that every fastener is secure and that no brake hose or ABS wire is twisted, pinched, or stretched.
• 🛞 Turn the steering wheel slowly from lock to lock and listen for contact, binding, or popping.
• 🚗 Test-drive at walking speed in a safe area first. Confirm the steering responds normally and no clunking is present.
• 📏 Have a four-wheel alignment performed before normal driving to prevent poor handling and tire wear.
• 🔩 Recheck wheel-nut torque after approximately 80-160 km (50-100 miles).
• 🛑 Stop driving immediately if the steering wheel is badly off-center, the vehicle pulls sharply, or a metallic clunk remains.

---

💰 DIY vs Shop Cost

Shop Cost: $650-$1,100 (parts + labor)

DIY Cost: $220-$450 (parts only)

You Save: $430-$650 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2.5-4 hours, plus alignment.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.