1
- The brake master cylinder is located directly underneath the brake fluid reservoir near the driver side of the engine bay.
1986-1993 Volvo 240 Brake Master Cylinder Replacement
If your Volvo 240's brake pedal is especially soft or loses pressure while you're holding the brakes, it could be a bad seal in the master cylinder.
Step-by-step instructions
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- Twist the brake fluid reservoir cap counterclockwise and remove it.
- Remove as much brake fluid from the reservoir as possible by sticking a clean rag inside the reservoir.
- When you remove the rag, be sure not to place it on any painted or plastic surfaces. Brake fluid will strip paint and deteriorate plastic.
3
- If your brake fluid reservoir has a fluid level sensor, disconnect it by pressing down on the plastic tab and pulling the connector straight out of its socket.
4
- Use a 10 mm open end wrench to disconnect the two brake lines from the master cylinder.
- There were still be fluid in the master cylinder that will drip out of the connections; this is normal. Use a clean rag to clean up any dripping fluid.
5
- Use an open end or socket wrench to remove the 17 mm nuts on either side of the master cylinder that attach it to the brake booster.
- Remove the brake master cylinder, taking care not to damage or bend the brake lines.
Conclusion
To reassemble your device, follow these instructions in reverse order.
Don't forget to flush & bleed with new brake fluid! (separate how-to required)
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