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UNDERVEHICLE MAINTENANCE

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If tubeless or tube type. Radial designation if applicable. DOT manufacturing ... Maintenance is limited to checking lube level on Recirculatig ball type and ... – PowerPoint PPT presentation

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Title: UNDERVEHICLE MAINTENANCE


1
UNDERVEHICLEMAINTENANCE
  • Visual Inspection is a good place to start.
  • Leaks are a warning of things to come.
  • Everything under the chassis will eventually stop
    your car if they fail.
  • Preventative maintenance goes a long way!!!!!

JH
2
TIRES
  • TIRE STRUCTURE
  • MAIN ELEMENT IS STEEL WIRE BEADS
  • TIRE CARCASS OR CASING
  • PLIES AND BELTS
  • TREAD (RIBS AND GROOVES)
  • INNER LINER

3
TIRE DESIGN
  • THREE BASIC CONSTRUCTION DESIGNS
  • BIAS
  • BELTED RADIAL
  • BELTED BIAS
  • FOOTPRINT CONTROLLED BY DESIGN

4
TIRE RATINGS AND DESIGNATIONS
  • RATING DETERMINES AMOUNT OF LOAD A TIRE CAN
    HANDLE
  • TIRES ARE IDENTIFIED BY PROFILE, ASPECT RATIO,
    SIZE AND LOAD RATING.
  • U.S.. AND METRIC SYSTEM TIRE DESIGNATIONS

5
SIDEWALLINFORMATION
  • Tire Information is required by law
  • Size of tire
  • max inflation pressure
  • Max Load rating
  • generic name of material
  • Number of plies on side and tread
  • If tubeless or tube type
  • Radial designation if applicable
  • DOT manufacturing code

6
TIRE SERVICE
  • INSPECT TIRES
  • ROTATE TIRES
  • R R TIRES
  • BALANCE TIRES
  • REPAIR LEAKS

7
SUSPENSION SYSTEM
  • Suspension System supports weight of car
  • Most systems have same basic parts
  • Frame
  • Springs
  • Control Arms
  • Shock Absorbers
  • Tires

8
FRONT SUSPENSION
  • Several types of suspensions
  • SLA
  • MacPherson Strut Front Suspension
  • Torsion Bar suspension
  • Modified SLA with upper spring
  • Suspension system has many parts
  • Ball Joints, control arms, springs, Stabilizer
    bars,
  • Suspension system must be lubricated regularly

9
REAR SUSPENSION
  • Trailing Arm rear suspension
  • Rigid Rear suspension
  • Independent Rear suspension
  • Rear suspension use different type of springs and
    anti-sway bars.

10
SUSPENSION MAINTENANCE
  • Lubricate joints
  • Chassis Grease
  • Inspect for wear
  • R R shocks
  • Inspect for leakage

11
SHOCK ABSORBERS
  • Hydraulic operation
  • Gas filled operation
  • Located on all four corners of a vehicle
  • Shock Absorber Ratio
  • Determines rate of compression and extension

12
STEERING SYSTEMS
  • Two Main types of steering systems
  • Recirculating Ball Type steering gear
  • Rack and Pinion steering gear
  • Maintenance is limited to checking lube level on
    Recirculatig ball type and visual inspection on
    Rack and Pinion
  • Also, must keep Power steering level filled if
    applicable.

13
Steering Linkage
  • Contains many parts and so must insure all are
    in good shape.
  • Must lubricate linkage when neccesary
  • Can cause accidents if excessive play is apparent
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