Power Brake Unit: Reassembly

Reverse disassembly procedure. Apply silicone grease to parts before reassembly. On 4WD models, when installing reaction disc hub, rotate it 90 degrees. Ensure raised portion of hub is properly seated in valve body. On all models, when assembling rear shell to front shell, ensure index marks are aligned.

Fig 1: Exploded View of Typical Power Brake Unit

Courtesy of MAZDA MOTORS CORP.