1. Gather Materials:
- Jack and jack stands
- Socket set and wrenches
- Spring compressor (if necessary)
- New U-bolts (if needed)
- Lowering kit (leaf spring shackles or hangers, if desired)
2. Prepare the Van:
- Engage the parking brake and chock the front wheels.
- Raise the rear of the van using the jack and place jack stands under designated frame points for safety.
3. Remove the Wheels:
- Loosen the lug nuts, raise the van, and remove the lug nuts.
- Remove the wheels to expose the leaf springs and rear end.
4. Disconnect the Shock Absorbers:
- Locate the shock absorbers and unbolt them from their mounting points.
- This will allow the axle to move freely when adjusting the leaf springs.
5. Prepare the Leaf Springs:
- If the leaf springs are secured with a center bolt or U-bolts, remove them to detach the springs.
6. Lower the Leaf Springs:
- Use a spring compressor if the springs are pre-loaded with tension (newer vans). This will ensure safety during the process.
- Once compressed, lower the leaf springs by sliding them down the hangers or shackles.
7. Install Lowering Kit (Optional):
- If you have a lowering kit, install the lowering shackles or hangers now.
- Tighten the bolts to secure them.
8. Reattach Leaf Springs:
- Slide the leaf springs back into the hangers or shackles and fasten them using the U-bolts or center bolt.
- Leave them slightly loose for now.
9. Reinstall Shock Absorbers:
- Reinstall the shock absorbers, ensuring the bottom mounts are properly aligned.
- Tighten the shock absorber bolts.
10. Lower the Van and Check Alignment:
- Slowly lower the van back down using the jack until it's resting on the ground.
- Remove the jack stands and wheels. Reinstall the lug nuts and tighten them.
- Check the alignment; if needed, adjust the toe and camber as necessary.
11. Test Drive and Retighten:
- Take the van for a short test drive to ensure proper ride quality and handling.
- Re-check all bolts and connections, especially the U-bolts and shock absorbers.
Note:
- If the van is lowered significantly, you might need to adjust other components such as the driveshaft, brake lines, and exhaust to ensure proper fitment and functionality.
- Consider seeking professional assistance or referring to specific lowering instructions for your Chevy van model to ensure safety and proper lowering techniques.
