Specialty Products Company Basic Wheel …（专业产品公司基本轮u2026）.pdfVIP

Specialty Products Company Basic Wheel Alignment Fundamentals Wheel alignment technology advances con- then be performed. Record visual signs of tire wear tinuously with the introduction of new makes and any ride height imperfections to ensure these and models of vehicles, engines, transmissions/ areas are corrected prior to alignment adjustments. transaxles, steering and electronic suspensions. Test driving the vehicle as part of the diagnostic Two wheel alignment is quickly becoming obsolete process is essential. Some vehicles may not need and four wheel alignment is rapidly being incorpo- an alignment. Instead, the steering wheel may rated on many of the new models. need to be centered or the suspension may need With the technology being incorporated in the repaired. A test drive will be helpful in diagnosing newer vehicles, it’s not just the front tires which a vehicle problem. Follow the pre-alignment proce- steer the vehicle. Many manufacturers now use dure as a guide to ensure all areas are inspected four wheel steering and complex electronic sus- before actual adjustments are made. pensions. Specific procedures must be followed to ensure proper wheel alignment. On these newer, more sophisticated vehicles, an alignment techni- Alignment Angle cian can easily end up misaligning the wheels by Terminology not following the proper procedures. With today’s computerized vehicle systems, Caster Angle improperly aligned wheels can effect engine per- Caster is the angle between an imaginary line drawn formance, ride, tire wear, steering and premature through the upper and lower steering p