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Home >> International >> 1971 >> M800 5.0L Eng, _NA_ >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Master Cylinders - WAGNER Tandem Dual Piston Master Cylinder >> Overhaul >> Master Cylinder >> Disassembly

Master Cylinder: Disassembly

  1. Remove master cylinder cover and diaphragm and drain fluid from reservoirs. Stroke piston to force out residual fluid through outlet ports. Remove piston stop bolt from bottom of housing, and remove retainer ring from groove in end of cylinder bore.
  2. Remove stop plate from push rod end of cylinder and turn cylinder assembly so that forward end is up. Lightly tap open end of cylinder on bench. All internal parts should slide easily out of cylinder bore.
    NOTE: If parts do not slide out of bore, carefully apply air pressure to forward brake tube outlet to force parts out.
  3. Remove and discard all rubber parts. On vehicles with removable residual valves, unscrew and remove check valve retaining nut. Lift out residual valve assembly.
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