Installing Polyurethane Leaf Spring Bushings
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At 15:19 in
Our GMT400 Suburban Frame Off Big Block Build is Rolling! (Junkyard 14 Bolt Prepped By Logan)
What happens here
Remove the rubber bushings from the new leaf springs and the OEM shackles using a press. This will allow for the installation of new polyurethane bushings. Once the old bushings are pressed out, carefully press in the new polyurethane bushings with greasable bolts. This upgrade will reduce flex, improve performance, and tighten up the rear suspension, especially important for a high-horsepower application.
Goal: Replace rubber bushings with polyurethane for enhanced suspension performance.
Tools and materials
- Greasable Bolts Offroad Design — Allowing for periodic greasing of the polyurethane bushings
- Hydraulic Press — Removing old bushings and installing new ones
- New Leaf Springs RockAuto — Upgraded suspension components that will receive new bushings
- OEM Shackles General Motors — Suspension components that will receive new bushings
- Polyurethane Bushings Kit Offroad Design — Replacing old rubber bushings in leaf springs and shackles
- Polyurethane Grease Offroad Design — Lubricating bushings during installation
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