Using jack stands is essential for safely working under a vehicle, but improper setup can lead to catastrophic accidents. Follow this step-by-step guide to master the correct—and safest—way to use jack stands.
Why Proper Jack Stand Use Matters
Avoid Fatal Accidents: Over 4,500 car repair injuries occur annually in the U.S. due to improper jack use (NHTSA).
Stability: Jack stands provide a secure base, unlike hydraulic jacks alone, which can leak or fail.
Legal Compliance: OSHA requires jack stands for workplace auto repairs.
Tools You'll Need
Pair of jack stands (rated for your vehicle's weight)
Wheel chocks
Work gloves
Owner's manual (for lift points)
How to Use Jack Stands: 13 Steps
1. Park on a Flat, Solid Surface
Avoid gravel, grass, or slopes. Concrete or asphalt is ideal.
Engage the parking brake and turn off the engine.
2. Chock the Wheels
Place wheel chocks diagonally (e.g., chock rear wheels if lifting the front).
3. Locate Factory Jack Points
Check your owner's manual for reinforced lift points (usually marked by notches on the frame).
Never lift from plastic body panels or exhaust components.
4. Lift the Vehicle with a Hydraulic Jack
Position the jack under the lift point and pump slowly until the tire clears the ground.
5. Position Jack Stands
Slide stands under the vehicle's frame or axle, aligning with secondary support points.
Ensure stands are vertical and on solid ground.
6. Adjust Stand Height
Use the stand's ratchet or pin mechanism to raise it until it contacts the frame.
Leave the jack slightly supporting the vehicle during this step.
7. Lower the Vehicle onto Stands
Slowly release the hydraulic jack until the full weight rests on the stands.
8. Test Stability
Shake the vehicle gently. If it wobbles, reposition the stands.
9. Add Backup Supports (Optional)
For extra safety, place a second pair of stands or wooden blocks under the frame.
10. Perform Your Repairs
Keep tools organized to avoid sudden movements under the vehicle.
11. Re-Lift the Vehicle to Remove Stands
Use the hydraulic jack to slightly raise the car off the stands.
12. Remove Stands and Lower the Vehicle
Slide stands out carefully, then lower the jack completely.
13. Do a Post-Repair Check
Test-drive slowly in a safe area to ensure everything functions properly.
Safety Tips
Weight Capacity: Use stands rated for at least 75% of your vehicle's gross weight (e.g., 3-ton stands for a 4,000-lb SUV).
Avoid Concrete Blocks: They can crack under pressure.
Never Work Alone: Have someone nearby in case of emergencies.
Inspect Stands Regularly: Look for cracks, rust, or bent metal.
FAQs
Q: Can I use only a hydraulic jack without stands?
A: No. Hydraulic jacks can fail suddenly due to fluid leaks or mechanical issues.
Q: Where should I place jack stands on a unibody car?
A: Use reinforced subframe points or pinch welds, but avoid damaging brake lines or fuel tanks.
Q: How do I clean rusty jack stands?
A: Scrub with vinegar and a wire brush, then lubricate the ratchet mechanism with WD-40.
Improper jack stand use caused 23% of DIY repair injuries in 2022 (CDC). By following these 13 steps, you'll protect yourself and your vehicle. Always prioritize quality stands with lifetime warranties. Stay safe under the hood!
