Introduction to 4 Wheel Drive

Notes from Previous TFC

• transfer case
  • full-time/part-time - selectable
  • u-joint: 4 points of connection
  • birfield: 6 points of connection
  • no center differential
• IFS
  • lower unsprung weight
  • isolates bumps
  • as one side compresses, the other side does as well
• Traction Aids
  • differential lock
    • selectable
  • center differential failures happen in actuator
• bearings vs. axel shaft
  • semi float supports weight and rotation
  • full float only provides rotation
• tires
  • bias ply (not used anymore)
  • radial
  • caster F/R "casters"
  • camber L/R "off camber"