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John Bean VPI System III Wheel Balancer
Installer Knowledge Base
List of beginner knowledge experienced tire professionals understand.
1. What are vehicle jacking points & where are they?
Jacking points are areas beneath a car where a jack can safely make contact and then hold position. These areas need to be steady, firm, and robust, as the jack will be pushing against them until the car is lifted. You can find them on some vehicles near the front & rear wheel, the rear differential, front & rear cross members.
2. What is the difference between lug nuts & bolts?
A lug nut threads onto a wheel stud, which is seated semi-permanently in the wheel hub. With a lug bolt, a threaded stem is affixed to a tapered head. Think of it as a lug nut permanently attached to a wheel stud that screws directly into the hub.
3. What is an air impact wrench & how does it work?
Auto mechanics typically use this tool to loosen and tighten tire lug nuts. The output shaft of the impact wrench is square. They come in a variety of sizes, the most popular being the 1/2" square
4. What size socket sizes are most common to remove lug nuts?
11/16" (17mm), 3/4" (19mm), 13/16" (21mm), and 7/8" (22mm)
Free online training Google documents
Vehicle Jacking Points
Vehicle Fasteners
Demount Tire ProcessMounting Tire Process
High Speed Laser Balancing
Free online training videos (coming soon)