Double Cardan CV Ball Kit Replacement: Complete DIY Guide

A double Cardan CV joint allows your driveshaft to flex and transmit power smoothly even when suspension components move. Over time, the ball bearings inside the joint wear out, causing clicking sounds, vibration, or a sensation of lost power delivery. This guide covers the general steps for replacing a double Cardan CV ball kit—a task suitable for intermediate DIY mechanics with basic tool experience and access to a proper workspace. Expect this replacement to take 2–4 hours from start to finish. These are general guidance steps only; specific tools, torque specifications, and procedural details vary significantly by vehicle make and model. You must consult your owner's manual and service documentation for exact specifications before beginning work.

What You'll Need

Tools

• Socket set with ratchet and extensions
• Torque wrench (to apply exact fastener specifications)
• Floor jack and jack stands (two minimum)
• Bench vise or clamp to secure the CV joint during disassembly
• Snap ring pliers (internal or external, depending on your joint style)
• Drain pan for old grease and fluid
• Soft-bristle brush for cleaning
• Safety glasses and work gloves
• Shop rags and paper towels
• Flathead screwdriver or pry bar for minor disassembly

Parts and Materials

• Double Cardan CV ball kit (includes cage, ball bearings, and snap ring as one assembly)
• CV-specific lubricating grease or multi-purpose chassis grease as specified in your service manual
• Replacement seals or gaskets if included in the kit or recommended by your manual
• Parts cleaner or brake cleaner
• Clean rags for final assembly and inspection

Before You Begin

• Work on a level, solid surface and raise the vehicle with a floor jack. Always secure the vehicle with jack stands rated for at least the vehicle's weight—never rely on a jack alone. Position stands on sturdy frame points and double-check that all supports are stable before working underneath.
• Disconnect the negative battery terminal if your vehicle's driveline includes electronic controls such as traction control or all-wheel-drive management systems. This prevents accidental electrical discharge or system interference during disassembly.
• Understand that CV joints are critical driveline and steering components. Improper installation can result in loss of power delivery, steering control, or catastrophic failure while driving. If you are not experienced with suspension or driveline work, have a qualified mechanic perform or inspect this repair before driving the vehicle at highway speeds.
• Review your vehicle's owner's manual and service documentation before beginning. Write down exact torque specifications for all fasteners, the correct grease type and fill quantity, and any special removal or installation procedures unique to your vehicle.

Step-by-Step: How to Replace a Double Cardan CV Ball Kit

1. Lift and secure the vehicle on jack stands, then remove the wheel or wheels to access the CV joint assembly. Use a socket and ratchet to remove lug nuts carefully, then place the wheel aside in a safe location. Once the wheel is clear, you'll have direct access to the CV joint or the fasteners that hold it to the differential or driveshaft.
2. Remove the axle shaft or unbolt the CV joint assembly from the differential or driveshaft, depending on whether your vehicle uses a transaxle configuration or a traditional rear-drive layout. The removal sequence and any special tools needed vary widely—consult your service manual for the exact steps, including whether you need to remove brake calipers, tie rods, or other surrounding components first.
3. Drain any fluid or old grease trapped inside the joint housing into a drain pan. Once drained, clean the exterior of the CV joint thoroughly with parts cleaner to minimize contamination when you open the assembly. Use a soft brush to remove stubborn grease and dirt. Cleanliness is critical; even small particles of old grease or debris can compromise the new ball kit's performance and lifespan.
4. Remove the snap ring or retaining clip that holds the CV ball cage in place using snap ring pliers. These clips are often spring-loaded and may pop out suddenly when released—secure the joint in a bench vise or clamp to prevent losing components or damaging your hands. Work slowly and deliberately.
5. Lift out the ball cage and all ball bearings from the CV joint housing. Lay out all removed components in order so you can reference them during reassembly and avoid mixing parts with other joints. The cage and balls are a matched set and must be installed together; do not mix them with balls or cages from other CV joints.
6. Clean the interior of the CV joint housing thoroughly with parts cleaner and a soft brush, removing all old grease, dirt, and metal particles. Pay special attention to the races (the inner and outer curved surfaces where the balls roll). Inspect these races for pitting, scoring, corrosion, or deep wear marks. If the races show visible damage, the entire CV joint assembly likely needs replacement rather than just the ball kit; consult a qualified mechanic to confirm.
7. Install the new CV ball kit by carefully seating the cage into the housing races first, then positioning each ball bearing into its designated groove. Take your time to align the cage properly—most cages have alignment marks or notches that correspond to the housing. Consult your service manual for the correct orientation before forcing anything into place.
8. Reinstall the snap ring or retaining clip, ensuring it seats fully and evenly in its groove all the way around. The clip must be secure and flush against the cage; use snap ring pliers to ensure proper seating. A loose clip can allow the cage to shift, causing noise and premature wear.
9. Apply the appropriate lubricating grease (CV-specific or as specified in your service manual) to the joint housing until it reaches the correct fill level. Your manual will specify the exact quantity—usually enough to fill the housing cavity about three-quarters full without overflowing. Too little grease causes rapid wear; too much causes overheating and leakage. Wipe away any excess grease with a clean rag.
10. Reinstall the CV joint assembly onto the axle shaft or driveshaft by aligning the bolt holes and hand-tightening all fasteners first. Once everything is aligned and hand-tight, use a torque wrench to tighten each fastener to the exact specification provided in your vehicle's service manual—do not estimate, guess, or skip this step. Reinstall the wheel, torque the lug nuts to specification, and lower the vehicle. Take a short test drive on a quiet road to verify smooth operation and listen for any clicking, clunking, or vibration.

Torque specifications, removal procedures, grease types, and fill quantities vary significantly by vehicle make, model, and driveline configuration. Before tightening any fasteners, consult your owner's manual and service documentation one final time to confirm exact specifications for your specific vehicle. Improper torque or incorrect procedures can result in premature failure or safety issues.

Tips for a Successful Double Cardan CV Ball Kit Replacement

• Label or photograph each component as you remove it, especially the cage orientation and snap ring direction. This reference will speed up reassembly and eliminate guesswork about whether parts are oriented correctly.
• Never reuse old grease—always apply fresh lubricant that matches your service manual's specification. Old grease contains wear debris and contaminants that will compromise the new ball kit's performance and lifespan.
• Inspect the inner and outer races of the CV joint housing carefully before reassembly. If you see pitting, scoring, or deep wear patterns, the entire CV joint assembly is likely safer and more economical to replace than just the ball kit. Worn races will quickly damage the new balls and cage.
• Work methodically and avoid rushing. Double-check each step before moving forward, and do not force components into place. A few extra minutes spent now prevents damaged seals, misaligned parts, and the need to disassemble everything and start over.

When to Call a Professional

If the inner or outer races of the CV joint housing show visible pitting, scoring, or corrosion, the entire joint assembly may need replacement rather than just the ball kit—consult a certified mechanic for diagnosis. If you lack experience working with suspension or driveline assemblies, have a qualified mechanic inspect your finished work before you drive the vehicle at highway speeds to verify proper installation and alignment. If you do not have access to a torque wrench or cannot obtain the exact torque specifications from your service manual, do not guess at fastener tightness; under-torquing can cause components to loosen, while over-torquing can strip threads or crack housings. If the vehicle exhibits clicking, clunking, vibration, or loss of power delivery after your replacement, stop driving immediately and seek professional diagnosis—these symptoms indicate a serious driveline problem that must be corrected before the vehicle is driven again.