Frame Angle

1996 Chevrolet Forward Control 6.5 Y, AutomaticSECTION Frame Angle
  1. Frame angle is the degree of tilt in frame from a level position. To determine frame angle, position vehicle on smooth, level surface. Using inclinometer or bubble protractor, measure frame angle. Determine if frame angle is up-in-rear or down-in-rear.
  2. To determine corrected caster reading with various frame angles and caster readings apply one of the following rules:
    • Down-in-rear frame angle must be subtracted from a positive caster reading.
    • Up-in-rear frame angle must be added to a positive caster reading.
    • Down-in-rear frame angle must be added to a negative caster reading.
    • Up-in-rear frame angle must be subtracted from a negative caster reading.

If corrected caster or camber is not within specification, go to adjustment procedure.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.