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Home >> Hummer >> 2009 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brake System >> Specifications >> Disc Brake Component Specifications

Disc Brake Component Specifications

Application Specification
Metric English
Front Brakes JH6
  • Rotor Discard Thickness
36.50 mm 1.437 in
  • Rotor Minimum Allowable Thickness After Refinish
37.0 mm 1.457 in
  • Rotor Thickness - New
38.0 mm 1.496 in
  • Rotor Maximum Allowable Assembled Lateral Runout
0.13 mm 0.005 in
  • Rotor Maximum Allowable Scoring
1.50 mm 0.059 in
  • Rotor Maximum Allowable Thickness Variation
0.025 mm 0.001 in
Rear Brakes JH6
  • Rotor Discard Thickness
27.50 mm 1.083 in
  • Rotor Minimum Allowable Thickness After Refinish
28.0 mm 1.102 in
  • Rotor Thickness - New
29.0 mm 1.142 in
  • Rotor Maximum Allowable Assembled Lateral Runout
0.13 mm 0.005 in
  • Rotor Maximum Allowable Scoring
1.50 mm 0.059 in
  • Rotor Maximum Allowable Thickness Variation
0.025 mm 0.001 in
*All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the minimum thickness specifications.