Fundamentals of vehicle suspension geometry

Construction of suspensions, suspension geometry concept. Diagnostics, repair and suspension adjustment using FWA 4630 FWA 44XX/43XX devices and ESI (tronic) service documentation.

• full process from preparation to measurement (verification of disqualifying damage, checking boundary conditions - vehicle load, body level, etc.) through basic measurement with several types of FWA devices, interpretation of results, adjustment or repair and adjustment
• the practical part takes place on many different / characteristic types of suspensions

• concepts related to suspension geometry:
• convergence / divergence / half-convergence
• positive/negative camber angle
• pivot angle
• swing radius
• caster angle
• twisting moment
• stabilization moment
• the difference between the axis of symmetry of the vehicle and the geometrical axis of travel
• vehicle axle offset
• wheelbase differences
• side shift
• wheel offset
• wheelbase differences
• the role of the above parameters and their interrelationships
• the impact of the above parameters on vehicle driving in the event of irregularities (damage to suspension components, incorrect adjustment)
• the role of the trapezoidal system in steering the vehicle
• differences in the steering angle of the wheels - task, examples of damage affecting this parameter
• markings of rims and tires - typical damage, causes
• preparatory activities for geometry measurement / boundary conditions
• principles of measurement with FWA devices