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Power Brake Unit: Reassembly

  1. Reverse disassembly procedure. Apply silicone grease to parts before reassembly. When assembling rear shell to front shell, make sure index marks are aligned.
  2. Before installing master cylinder to power unit, measure clearance between primary piston and power unit push rod. Clearance on RX7 & GLC Wagon should be .004-.012" (.1-.3 mm).
  3. On all other models, clearance should be .004-.020" (.1-.5 mm). If clearance is not to specifications, correct by adjusting push rod length.
Fig 1: Exploded View of Typical Power Brake Unit Some models may vary slightly.
G50095
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