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Master Cylinder - Grand WAGONEER & Pickup: Disassembly

  1. Remove reservoir cover and diaphragm. Discard remaining brake fluid in reservoir. Push in on primary piston and remove snap ring.
  2. Apply compressed air at forward brake line hole while plugging rear hole. Pistons will be forced out at open end of master cylinder.
  3. Remove spring retainer and seals from secondary piston. Discard seals. Clamp mounting ear of master cylinder in vise and carefully pry off reservoir.
  4. Do not attempt to remove take-up valve from master cylinder. It is not a serviceable component. Remove reservoir grommets and discard.
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