How to Install Leaf Spring Lift Kit Blocks


Installation of a suspension lift kit is a great way to improve the off road capabilities of a vehicle equipped with leaf spring type suspension. The easiest and most cost effective way to increase the suspension clearance on a vehicle is through the use of a lift block suspension lift kit. This system was designed with the do-it-yourselfer in mind, and requires only simple hand tools and a couple hours to install. It is recommended that a lift kit be purchased that includes all necessary hardware, such as the lift blocks, replacement shocks, U-bolts, and brake lines.

Things You'll Need

  • Complete set of US and Metric wrenches and sockets
  • Leaf springs
  • U-bolts
  • Brake lines
  • Shocks
  • Lift the vehicle off the ground using the frame. The point of contact for the lift jack must be the frame, as the body will need to be moved independent of the axle housing. Support the vehicle's axle housing with a second jack to allow independent raising and lowering of the housing. This process can be accomplished with only two jacks by installing one lift block at a time.

  • Remove the factory hardware. With the frame and axle housing fully supported, remove the axle mounting plate that the shock mounts to. There are four bolts that connect the mounting plate to the axle housing. Remove the shock from the mounting plate and frame. Remove the nuts on the ends of the U-bolts that hold the leaf spring on to the axle housing. Pull the U-bolts up and off of the leaf spring and axle housing. Disconnect the brake line from the brake drum/caliper.

  • Lower the axle housing enough to place the lift block in between the leaf spring and housing. Position the lift block in between the axle housing and leaf spring. Install replacement U-bolts and torque to manufacturer specification. Install replacement shock, connecting it to the axle mounting plate and frame. Connect replacement brake line to the drum/caliper and existing brake line.

  • Repeat steps one through three on the remaining three corners of the vehicle.

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