Cherokee 4WD L6-4.0L VIN S (1998)
Brake Drum: Specifications
Brake Drum Specifications
Brake Drum Specifications
DRUM DIAMETER (Standard)
9 in. (Light Duty)
10 in. (Heavy Duty)
DRUM DIAMETER (Maximum)
Cast/stamped into outside surface of drum
This marking includes 0.76 mm (0.030 inch) for allowable
drum wear beyond the recommended 1.52 mm (0.060 inch) of
drum refacing.
DRUM DIAMETER VARIATION (Maximum)
0.076 mm (0.003 in.)
DRUM RUNOUT (on lathe)
0.20 mm (0.008 in.)
INITIAL DRUM MACHINING CUTS
0.12 - 0.20 mm (0.005 - 0.008 in.)
Initial machining cuts should be limited to 0.12 - 0.20 mm
(0.005 - 0.008 in.) at a time as heavier feed rates can
produce taper and surface variation.
FINISH DRUM MACHINING CUTS
0.025 - 0.038 mm (0.001 - 0.0015 in.)
