150416_Training documents

ProSteering ®

Non – Recovery Problem description: In recovering from a turn the wheels do not return to straight ahead Checklist: Verify tire pressure values Verify fifth wheel properly greased Verify vehicle alignment Verify caster angle Potential cause(s) Verification or action Result

Remedy

Tire does not self return to near straight ahead position Tire self returns to near straight ahead position

Problem likely exists in the king pin bushings / bearings or linkage Investigate the next potential cause Problem likely exists in the column, driveline, slip joint, u-­‐joint, or Investigate the next potential cause Repair, replace or relocate affected components. Correct surface flatness problem Investigate the next potential cause firewall boot interference

Follow the original manufacturers procedure to inspect for steer axle and linkage binding Follow the original manufacturers procedure to inspect steering column linkage for binding Follow the original equipment manufacturers procedure to inspect and /or correct interference between the gear and frame

Binding in steer axle linkage

Binding is NOT isolated to the gear or column

Gear / column binding

Binding is isolated to the steering gear

Interference condition exists

Interference between the steering gear and frame

No interference condition exists

150416_TECHNICAL GUIDE 27