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Home >> Mazda >> 2018 >> MX-5 Miata Club, Standard Trans >> Repair and Diagnosis >> Suspension >> Wheel Alignment >> Wheel Alignment >> Front Wheel Alignment >> Caster Adjustment

Caster Adjustment

CAUTION:
  • Adjust the caster after adjusting the camber.
  • When adjusting the caster, abnormal noise may occur if the adjusting cam bolt and nut are reused after removing the adjusting cam bolt installation nut. When adjusting the caster, be careful not to completely remove the adjusting cam bolt installation nut.
  1. Loosen the installation nut of the adjusting cam bolt on the rear side of the front lower arm.
    Fig 1: Identifying (Rear Side) Front Lower Arm With Bolt
    G11279085Courtesy of MAZDA MOTORS CORP.
  2. Rotate the adjusting cam bolt in either direction to adjust the caster.

    Specification 

    Vehicle height(1) Caster
    350-358 {13.8-14.0} 8°18'±1°
    359-367 {14.2-14.4} 8°04'±1°
    368-376 {14.5-14.8} 7°51'±1°
    377-385 {14.9-15.1} 7°38'±1°
    386-394 {15.2-15.5} 7°24'±1°
    (1) Vehicle height: From the end of the rear fender to the center of the wheel (mm {IN})
      Left wheel Right wheel
    Increase Clockwise Counterclockwise
    Decrease Counterclockwise Clockwise
    NOTE:
    • Refer to the following table to adjust the angle of the adjusting cam bolts in single increments.

    Adjustment table of adjusting cam bolt on rear side of front lower arm 

    Scale Link movement (mm {IN}) Caster change amount (angle)
    1 1.9 mm {0.075 in} 0°34'
    2 3.8 mm {0.15 in} 1°05'
    3 5.3 mm {0.21 in} 1°32'
    4 6.5 mm {0.26 in} 1°53'
    5 7.2 mm {0.28 in} 2°06'
    6 7.5 mm {0.30 in} 2°11'
  3. Tighten the nut.

    Tightening torque 

    135-165 N.m {14-16 kgf.m, 100-121 ft.lbf}

  4. Adjust the total toe-in. (See TOTAL TOE-IN ADJUSTMENT ).