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Suspension System Service

AUT 212W

Suspension System Service

AUT 212W

Course Description

Prerequisite: AUT 100 and AUT 108 with a minimum grade of "C" (2.0). Studies frame, steering, and suspension system terminology, operation, and diagnosis. Develops skills in frame, unibody, steering, suspension, four wheel drive and four wheel alignment. (56-84)

Outcomes and Objectives

Diagnose general suspension and steering systems. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Identify and interpret suspension and steering concern; determine necessary action. P-1
  • Research applicable vehicle and service information, such as suspension and steering system operation, vehicle service history, service precautions, and technical service bulletins. P-1
  • Locate and interpret vehicle and major component identification numbers (VIN, vehicle certification labels, calibration decals). P-1

Diagnose and repair steering systems. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Disable and enable supplemental restraint system (SRS). P-1
  • Remove and replace steering wheel; center/time supplemental restraint system (SRS) coil (clock spring). P-1
  • Diagnose steering column noises, looseness, and binding concerns (including tilt mechanisms); determine necessary action. P-2
  • Diagnose power steering gear (non-rack and pinion) binding, uneven turning effort, looseness, hard steering, and fluid leakage concerns; determine necessary action. P-3
  • Diagnose power steering gear (rack and pinion) binding, uneven turning effort, looseness, hard steering, and fluid leakage concerns; determine necessary action. P-3
  • Inspect steering shaft universal-joint(s), flexible coupling(s), collapsible column, lock cylinder mechanism, and steering wheel; perform necessary action. P-2
  • Adjust manual or power non-rack and pinion worm bearing preload and sector lash. P-3
  • Remove and replace manual or power rack and pinion steering gear; inspect mounting bushings and brackets. P-1
  • Inspect and replace manual or power rack and pinion steering gear inner tie rod ends (sockets) and bellows boots. P-1
  • Inspect power steering fluid levels and condition. P-1
  • Flush, fill, and bleed power steering system. P-2
  • Diagnose power steering fluid leakage; determine necessary action. P-2
  • Remove, inspect, replace, and adjust power steering pump belt.
  • Remove and reinstall power steering pump.
  • Remove and reinstall power steering pump pulley; check pulley and belt alignment. P-3
  • Inspect and replace power steering hoses and fittings. P-2
  • Inspect and replace pitman arm, relay (centerlink/intermediate) rod, idler arm and mountings, and steering linkaage damper. P-2
  • Inspect, replace, and adjust tie rod ends (sockets), tie rod sleeves, and clamps. P-1
  • Test and diagnose components of electronically controlled steering systems using a scan tool; determine necessary action. P-3

Diagnose and repair suspension systems. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Diagnose short and long arm suspension system noises, body sway, and uneven riding height concerns; determine necessary action. P-1
  • Diagnose strut suspension system noises, body sway, and uneven riding height concerns; determine necessary action. P-1
  • Remove, inspect, and install upper and lower control arms, bushings, shafts, and rebound bumpers. P-3
  • Remove, inspect and install strut rods (compression/tension) and bushings. P-2
  • Remove, inspect, and install upper and/or lower ball joints. P-2
  • Remove, inspect, and install steering knuckle assemblies. P-2
  • Remove, inspect, and install short and long arm suspension system coil springs and spring insulators. P-2
  • Remove, inspect, install, and adjust suspension system torsion bars; inspect mounts. P-3
  • Remove, inspect, and install stabilizer bar bushings, brackets, and links. P-2
  • Remove, inspect, and install strut cartridge or assembly, strut coil spring, insulators (silencers), and upper strut bearing mount. P-1
  • Lubricate suspension and steering systems. P-2

Diagnose and repair rear suspension systems. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Remove, inspect, and install coil springs and spring insulators. P-2
  • Remove, inspect, and install transverse links, control arms, bushings, and mounts. P-2
  • Remove, inspect, and install leaf springs, leaf spring insulators (silencers), shackles, brackets, bushings, and mounts. P-3
  • Remove, inspect, and install strut cartridge or assembly, strut coil spring, and insulators (silencers). P-2

Diagnose and repair miscellaneous service. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Inspect, remove, and replace shock absorbers. P-1
  • Remove, inspect, and service or replace front and rear wheel bearings. P-1
  • Test and diagnose components of electronically controlled suspension systems using a scan tool; determine necessary action. P-3

Diagnose, adjust, and repair wheel alignment. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Differentiate between steering and suspension concerns using principles of steering geometry (caster, camber, toe, etc). P-1
  • Diagnose vehicle wander, drift, pull, hard steering, bump steer, memory steer, torque steer, and steering return concerns; determine necessary action. P-1
  • Perform prealignment inspection; perform necessary action. P-1
  • Measure vehicle riding height; determine necessary action P-1
  • Check and adjust front and rear wheel camber; perform necessary action. P-1
  • Check and adjust caster; perform necessary action. P-1
  • Check and adjust front wheel toe; adjust as needed. P-1
  • Center steering wheel. P-1
  • Check toe-out-on-turns (turning radius); determine necessary action. P-2
  • Check SAI (steering axis inclination) and included angle; determine necessary action. P-2
  • Check and adjust rear wheel toe. P-2
  • Check rear wheel thrust angle; determine necessary action. P-2
  • Check for front wheel setback; determine necessary action. P-2
  • Check front cradle (subframe) alignment; determine necessary action. P-3

Diagnose and repair wheel and tire. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Diagnose tire wear patterns; determine necessary action. P-1
  • Inspect tires; check and adjust air pressure. P-1
  • Diagnose wheel/tire vibration, shimmy, and noise; determine necessary action. P-2
  • Rotate tires according to manufacturer's recommendations. P-1
  • Measure wheel, tire, axle, and hub runout; determine necessary action. P-2
  • Diagnose tire pull (lead) problem; determine necessary action. P-2
  • Balance wheel and tire assembly (static and dynamic). P-1
  • Dismount, inspect, repair, and remount tire on wheel. P-2
  • Reinstall wheel; torque lug nuts. P-1
  • Inspect and repair tire. P-2

Write effectively.

Objectives:

  • Practice writing essay unit tests and quizzes.
  • Practice writing service repair orders (concern, cause, correction).
  • Practice writing daily assignments.
  • Practice writing weekly feedback to instructor.