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Mazda RX7 1st Gen Rear Brake-Caliper Rebuild

November 4th, 2009 · No Comments

Getting started
- Chock the other 3 wheels on both sides
- Release handbrake
- Put the gearbox into neutral
- Loosen wheel nuts
- Jack up the car
- Remove wheel nuts + wheel
- Place jack-stand under car for safety

Removing the brake calliper
- Loosen the brake hose fitting from the calliper
- Loosen the nuts on the handbrake cable and remove
- Remove bolt holding calliper on
- Rotate calliper up and slide off idle post
- Unscrew calliper from the brake hose
- Block brake hose with something to prevent leak

Tearing down the brake calliper
- First drain brake fluid into a container / wipe with rag
- Mount calliper in vice on handbrake arm
- Either using a cube brake piston tool or a couple of spanners, screw the brake piston right in
- In the outside seam of the rubber seal, you will need to dig out the metal spring clip
- Now unscrew the brake piston completely, the seal will pop out of the housing
- You can now remove the seal from the piston + clean up the piston with a rag

Removing the rear section (handbrake mechanism)
- Remove the 2 spring clips holding the rubber casing on the rear
- Pull back the rubber casing
- Remove the circlip from the end of the hand brake actuator shaft
- Give the shaft a light tap on the end and slide it out

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