Maxpeedingrods LK-ROD-PAR-LC 4 Link Suspension Rods Instruction Manual
- June 1, 2024
- MAXPEEDINGRODS
Table of Contents
Maxpeedingrods LK-ROD-PAR-LC 4 Link Suspension Rods
4-LINK SUSPENSION RODS
INSTALLATION INSTRUCTIONS
PRODUCT INFORMATION
This Parallel 4 Link Suspension kit fits for Hot Rod Rat Truck Car Air Ride. It can be installed beside the frame rail, inboard, or outboard. It allows more room for exhaust. We also include a Panhard bar to make this kit complete. It helps to improve the performance and stability of your truck.
KIT CONTENTS
INSTRUCTIONS
- If you are working on a finished vehicle with a leaf spring suspension, consider leaving the leaves in until the four-link is installed. This will avoid chasing the rear end around the shop during installation and will preset the location of the rear end. Be sure to double-check that the rear end is centered in the car both side to side and front to back.
- If you are starting from scratch, set the vehicle up at a comfortable working height and place the rear end under the car at ride height. Keep in mind that with an air ride system, you will be able to drop the car approx. 4″ from this height by deflating the system.
- Center the rear end side to side in relation to the frame. This is usually done by measuring from the frame to the wheel mounting or bearing flange of the rear end and making these measurements equal.
- Center the rear end in the wheel openings. The rough position should be centered in the wheel openings, but the final adjustment should make sure that the rear end is square to the frame and make sure that the distance between the axle centerlines [front to rear] is equal on each side of the car.
- The pinion angle should be roughly set at level with the frame. This will allow you enough adjustment to tune the pinion angle when the installation is complete.
- Steps 1,4, and 5 may have to be double-checked and repeated to ensure the rear end is correctly placed under the car. When you are satisfied with the placement, make sure the rear end won ‘t move during installation.
- When the rear end is correctly placed, the lower bracket and bar assembly can be placed. The 4-link kit is installed with the lower bars beside the frame either inside or outside. To determine the proper location, assemble the axle bracket, upper bars, lower bars, and frame bracket. Place the lower axle bracket against the axle tube. Assemble the bars with no more than 1/2″ of thread showing on the shaft.
- This will allow for final adjustment. With the lower bar level with the car, determine the best location for the frame bracket against the frame. When the lower frame bracket location has been determined, tack them into place. [Don’t weld fully yet]
- Place the axle brackets onto the axle tube at the same distance apart as the lower frame brackets. The back of these brackets should be plumb, [Perpendicular to the ground] and must be level with each other! One way to accomplish this is to tack one bracket and then use a piece of angle that is clamped across the back of the bracket to check the angle of the other. This will ensure that the lower 4 link mounting points are even from front to back.
- With a floor jack, raise and lower the rear end through its travel to check for interference or binding of the rod ends. If the rear end moves freely, final welding may now be done.
- The Pan hard bar will secure the axle from side to side. With the axle still centered under the vehicle and at ride height, determine the best place for the panhard bar. At ride height, the bar should be as level as possible. This will minimize the bar from pulling the axle sideways during suspension travel. One end will be attached to the axle and the other end will be attached to the frame. The bar may have to be trimmed for length.
MAINTENANCE
Highly suggest drivers inspect the nuts and bolts for tightness regularly.
All modifications must be installed by qualified personnel and in compliance
with your local modification regulations.
LK-ROD-PAR-LC
Read User Manual Online (PDF format)
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