I f the self-closing door to your garage isn’t closing hard enough to latch properly or the door slams shut, you can adjust the spring hinge tension with a hex wrench and pliers. Start by ...

The new tool is designed for use on Kenworth T-800 and some T-400 and 500 Class 8 trucks. The company also offers adapters kits for the front suspension on Kenworth T-660, W-900 and T2000 trucks.