DIY Network

Truck Lift-Kit -- New Front-Coils and Links From "Weekend Mechanic" episode WKM-105

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Front-end suspension upgrades include higher coil-springs, axle bump-stops and new performance links. Figure A Figure B Figure C Figure D Figure E Figure F Figure G Figure H Figure I Figure J Figure K Figure L Figure M Figure N

New Suspension Components

With the old shocks, links and coil-springs removed from the front of the vehicle, the old parts can be replaced with the new, performance-upgrade parts. For safety and efficiency, it's best to work only on one side of the truck at a time.

Important: The new springs (figure A) are a matched pair, and are marked "left" and "right." Make sure that you install the new springs on the correct side of the vehicle.

The springs are outfitted with a rubber insulator at the top. The insulator provides some shock resistance. Retain the old insulator as it can be used in conjunction with the new coil.

Note the difference in height between the old, stock coil-springs and the new, higher springs (figure B). In this kit, there is about a full coil's difference in height between the old and new springs. This is difference in height is what provides the additional lift on the front of the vehicle.

Another part being replaced is the lower link. The old, stock link (figure C) is essentially a metal bracket with a rubber bushing at either end.

The replacement link (figure D) is a welded tube equipped with polyurethane bushings and internal grease fittings. Greasing the links is part of regular maintenance on an upgraded suspension. The links should be greased after about every 3,000 miles.

Installing New Coil-Springs and Links

Steps:

• Before installation, the new lower-links must be assembled. Begin by installing the polyurethane bushings. The bushings snap easily into place.

• With the bushing in place, install the metal sleeve into the polyurethane bushing (figure E).

  
  

• Install the grease fitting in the link. Position the fitting in the hole provided in the link, and tap it into place using plastic hammer a quarter-inch socket (figure F).

  
  

• The axle bump-stop is also replaced. The old bump-stop is made from rubber and is replaced with a new, larger one made from polyurethane (figure G).

  
  

• The bump-stop and spring are installed first. Wipe away any debris that may be left in the bottom spring seat (figure H).

  
  

• Install the bump-stop (figure I) before installing the spring. Once the spring is installed, the axle-stop will be difficult to access.

  
  

• Make certain that the rubber insulator (figure J) is installed on the top of the new spring.

  Note: The ends of the springs are different sizes. The large end of the spring is always installed at the bottom. The rubber insulator is sized so that it will only fit on the top.

  
  

• With the insulator installed, compress the spring by hand to install it in position, making sure that the bottom of the coil rests securely in the spring-seat (figure K). For very large springs, you may need to use a spring-compressing tool.

  
  

• Re-install the retaining nut that connects the spring seat to the stabilizing bar (figure L).

  
  

• When installing the lower link, make certain that the grease fittings are oriented pointing down (figure M). If they are installed facing up, it will be difficult or impossible to access them later with a grease gun for servicing.

  
  

• Position the link in place and install the retaining bolts and nuts (figure N). When both bolts are in place, come back and tighten each of them.

Repeat the steps outlined above on the other side of the truck.

In the segment that follows, the new shocks and steering stabilizer are installed on the front of the truck.

RESOURCES :

The Complete Idiot's Guide to Trouble-Free Car Care
Author: Dan Ramsey
ISBN: 0028635833
Alpha Books

Auto Repair for Dummies
Author: Deanna Sclar
ISBN: 0764550896

Skyjacker Suspensions
Skyjacker Suspensions
Monroe, LA 71292
Phone: 318-388-0816
Website: www.skyjacker.com