2Suspension Service Overview Testing the repair suspension parts.Measure spring height/replace springs.Testing shocks and struts/replacement.Checking suspension parts/ replace as necessary.Replacement of: ball joints, control arms bushings, control arms, steering knuckles, strut rods, strut rod bushings, stabilizers & stabilizer bushings.
3Steering Service Overview Testing and repair of steering parts.Test conventional steering parts for wear and damage.Test rack and pinion steering for wear and damage.Replace worn parts including: tie rods, idler arms, center links, pitman arms, pitman shaft seals, entire racks & power steering repairs.
4Wheel Alignment Overview Front wheel alignment.4 wheel alignment.Hunter DSP 400.
5Automotive Springs Leaf Springs Coil Springs Torsion Bars Air Suspension
6Leaf SpringsOften used on trucks and SUV’s some car applications
7Coil Springs Most common type on automobiles Requires more sophisticated suspension system
8Torsion Bars Popular on pick-ups and SUV’s Adjustable on many applications
9Air Suspension Used on luxury cars Complicated Can use sensors and computer
10Testing Springs Measuring height called ride height or curb height Simple inch or mm measurementNeed to know where to measureMust check specifications
11Shock Absorbers Remove spring oscillations Dual Acting Direct Action TelescopicHydraulicGas operated
12Checking Shock Absorbers Look for oil leaksJounce testBench test
13Rear SuspensionRear suspension using leaf springs.
14Control Arm Suspension Steering knuckleUpper control armLower control armUpper ball jointLower ball jointUpper control arm bushingsLower control arm bushingsSpringShock
15McPherson Strut Spring Strut (shock) Lower control arm Lower ball jointSteering knuckleStrut rodStabilizer
16Inspecting Control Arm Suspensions Visual inspectionControl armsSteering knuckleUpper and lower control arm bushingsJack properly to check ball joints
17Inspecting McPherson Strut Suspensions Visual inspectionControl armSteering knuckleLower control arm bushingsProperly lift to check lower ball jointStrut
18Strut Rods Strut rod is also known as a brake reaction rod. Strut Rod orBrake ReactionRod
19Stabilizers Anti-Roll or Sway bar for better cornering. Note: It mounts to each control arm and the chassis.
26Inspecting Steering Linkage Inspect the following:Pitman ArmIdler armCenter linkTie-rod endsRack housingBoots and bushingsGrab the tire in the front and moveback and forth. Observe parts forImproper looseness.