Presentation on theme: "Suspension Service Overview Testing the repair suspension parts. 1. Measure spring height/replace springs. 2. Testing shocks and struts/replacement."— Presentation transcript:
Suspension Service Overview Testing the repair suspension parts. 1. Measure spring height/replace springs. 2. Testing shocks and struts/replacement. 3. Checking suspension parts/ replace as necessary. 4. Replacement of: ball joints, control arms bushings, control arms, steering knuckles, strut rods, strut rod bushings, stabilizers & stabilizer bushings.
Steering Service Overview Testing and repair of steering parts. 1. Test conventional steering parts for wear and damage. 2. Test rack and pinion steering for wear and damage. 3. Replace worn parts including: tie rods, idler arms, center links, pitman arms, pitman shaft seals, entire racks & power steering repairs.
Leaf Springs Often used on trucks and SUVs some car applications
Coil Springs Most common type on automobiles Requires more sophisticated suspension system
Torsion Bars Popular on pick-ups and SUVs Adjustable on many applications
Air Suspension Used on luxury cars Complicated Can use sensors and computer
Testing Springs Measuring height called ride height or curb height Simple inch or mm measurement Need to know where to measure Must check specifications
Shock Absorbers Remove spring oscillations Dual Acting Direct Action Telescopic Hydraulic Gas operated
Checking Shock Absorbers Look for oil leaks Jounce test Bench test
Rear Suspension Rear suspension using leaf springs.
Control Arm Suspension Steering knuckle Upper control arm Lower control arm Upper ball joint Lower ball joint Upper control arm bushings Lower control arm bushings Spring Shock
McPherson Strut Spring Strut (shock) Lower control arm Lower ball joint Steering knuckle Strut rod Stabilizer
Inspecting Control Arm Suspensions Visual inspection Control arms Steering knuckle Upper and lower control arm bushings Jack properly to check ball joints
Inspecting McPherson Strut Suspensions Visual inspection Control arm Steering knuckle Lower control arm bushings Properly lift to check lower ball joint Strut
Strut Rods Strut rod is also known as a brake reaction rod. Strut Rod or Brake Reaction Rod
Stabilizers Anti-Roll or Sway bar for better cornering. Note: It mounts to each control arm and the chassis.
Conventional or parallelogram type used on trucks and large cars Rack and pinion steering used on most cars STEERING LINKAGE
Steering Linkage Detail Idler ArmTie Rod
Inspecting Steering Linkage Inspect the following: Pitman Arm Idler arm Center link Tie-rod ends Rack housing Boots and bushings Grab the tire in the front and move back and forth. Observe parts for Improper looseness.
Rack and Pinion Steering
How a Rack and Pinion Works Pinion connects to the steering column. Rack (a flat gear) Connects to the tie rods and steering arm.
Exploded view of the rack
Rack & Pinion Steering Inspection Check out-board tie rods ends. Check in-board tie rod ends. Check bellows boot. Check rack mounting. Check pinion gear lash.
Power Steering Hydraulic assist using a pump, reservoir, hoses, valves and power cylinder.
Conventional Power Steering
Integral Type Power Steering
Power Rack & Pinion Steering
Power Steering Inspection Check for the following: 1 - Belt tension 2 - Belt condition 3 - Leaks 4 - Noises 5 - Proper operation