Please enable JavaScript to view this page.

Suspension and Steering Level 2

AUTO 154

Suspension and Steering Level 2

AUTO 154

Course Description

Prerequisites: Prerequisites: AUTO 104 and AUTO 149.

Practice the service of suspension and steering systems. Practices NATEF tasks to AST (Automotive Service Technology) level related to suspension and steering systems. (30-10)

Outcomes and Objectives

Complete general Suspension and Steering Systems Level 2 NATEF tasks as listed below.

Objectives:

  • Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins.

Complete Level 2 NATEF tasks related to Steering Systems as listed below.

Objectives:

  • Disable and enable supplemental restraint system (SRS).
  • Remove and replace steering wheel; center/time supplemental restraint system (SRS) coil (clock spring).
  • Diagnose steering column noises, looseness, and binding concerns (including tilt mechanisms); determine necessary action.
  • Diagnose power steering gear (non-rack and pinion) binding, uneven turning effort, looseness, hard steering, and noise concerns; determine necessary action.
  • Diagnose power steering gear (rack and pinion) binding, uneven turning effort, looseness, hard steering, and noise concerns; determine necessary action.
  • Inspect steering shaft universal-joint(s), flexible coupling(s), collapsible column, lock cylinder mechanism, and steering wheel; perform necessary action.
  • Remove and replace rack and pinion steering gear; inspect mounting bushings and brackets.
  • Inspect rack and pinion steering gear inner tie rod ends (sockets) and bellows boots; replace as needed.
  • Determine proper power steering fluid type; inspect fluid level and condition.
  • Flush, fill, and bleed power steering system.
  • Inspect for power steering fluid leakage; determine necessary action.
  • Remove, inspect, replace, and adjust power steering pump drive belt.
  • Remove and reinstall power steering pump.
  • Remove and reinstall press fit power steering pump pulley; check pulley and belt alignment.
  • Inspect and replace power steering hoses and fittings.
  • Replace power steering pump filter(s).
  • Inspect and replace pitman arm, relay (centerlink/intermediate) rod, idler arm and mountings, and steering linkage damper.
  • Inspect, replace, and adjust tie rod ends (sockets), tie rod sleeves, and clamps.
  • Identify hybrid vehicle power steering system electrical circuits and safety precautions.

Complete Level 2 NATEF tasks related to Suspension Systems Diagnosis and Repair as listed below.

Objectives:

  • Diagnose short and long arm suspension system noises, body sway, and uneven ride height concerns; determine necessary action.
  • Diagnose strut suspension system noises, body sway, and uneven ride height concerns; determine necessary action.
  • Inspect, remove and install upper and lower control arms, bushings, shafts, and rebound bumpers.
  • Inspect, remove and install strut rods and bushings.
  • Inspect, remove and install upper and/or lower ball joints (with or without wear indicators).
  • Inspect, remove and install steering knuckle assemblies.
  • Inspect, remove and install short and long arm suspension system coil springs and spring insulators.
  • Inspect, remove and install torsion bars and mounts.
  • Inspect, remove and install front stabilizer bar (sway bar) bushings, brackets, and links.
  • Inspect, remove and install strut cartridge or assembly, strut coil spring, insulators (silencers), and upper strut bearing mount.
  • Inspect, remove and install track bar, strut rods/radius arms, and related mounts and bushings.
  • Inspect rear suspension system leaf spring(s), bushings, center pins/bolts, and mounts.
  • Inspect electric power-assisted steering.

Complete Level 2 NATEF tasks related to Suspension and Steering Service as listed below.

Objectives:

  • Inspect, remove, and replace shock absorbers; inspect mounts and bushings.
  • Remove, inspect, and service or replace front and rear wheel bearings.
  • Describe the function of the power steering pressure switch.

Complete Level 2 NATEF tasks related to Wheel Alignment as listed below.

Objectives:

  • Diagnose vehicle wander, drift, pull, hard steering, bump steer, memory steer, torque steer, and steering return concerns; determine necessary action.
  • Perform pre-alignment inspection and measure vehicle ride height; perform necessary action.
  • Prepare vehicle for wheel alignment on alignment machine; perform four-wheel alignment by checking and adjusting front and rear wheel caster, camber; and toe as required; center steering wheel.
  • Check toe-out-on-turns (turning radius); determine necessary action.
  • Check SAI (steering axis inclination) and included angle; determine necessary action.
  • Check rear wheel thrust angle; determine necessary action.
  • Check for front wheel setback; determine necessary action.
  • Check front and/or rear cradle (subframe) alignment; determine necessary action.

Complete Level 2 NATEF tasks related to Wheels and Tires Diagnosis and Repair as listed below.

Objectives:

  • Inspect tire condition; identify tire wear patterns; check for correct tire size and application (load and speed ratings) and adjust air pressure; determine necessary action.
  • Diagnose wheel/tire vibration, shimmy, and noise; determine necessary action.
  • Rotate tires according to manufacturer’s recommendations.
  • Measure wheel, tire, axle flange, and hub runout; determine necessary action.
  • Diagnose tire pull problems; determine necessary action.
  • Dismount, inspect, and remount tire on wheel; balance wheel and tire assembly (static and dynamic).
  • Dismount, inspect, and remount tire on wheel equipped with tire pressure monitoring system sensor.
  • Inspect tire and wheel assembly for air loss; perform necessary action.
  • Repair tire using internal patch.
  • Identify and test tire pressure monitoring system (indirect and direct) for operation; verify operation of instrument panel lamps.
  • Demonstrate knowledge of steps required to remove and replace sensors in a tire pressure monitoring system.