Master Cylinders - BENDIX & DELCO-Moraine Dual Piston Master Cylinder: Overhaul: Disassembly: Inspection
Inspect cylinder bore for scoring or corrosion. Staining which has not pitted or roughened the surface can be removed with crocus cloth. Move cloth in a circular manner. Never polish cylinder with lengthwise strokes. If cylinder is scored, corroded, or pitted, American Motors and General Motors recommend replacing the cylinder. Chrysler Corporation permits honing if diameter of bore is not increased beyond.002" oversize. Ford Motor Company permits honing if bore diameter increase is not over.003".