Here's why and what you should do instead:
* Self-Adjusting Drums: The rear drum brakes on a Metro are designed to self-adjust each time you use the service brakes. There's no external cable adjustment.
* Possible Problems: If your parking brake is ineffective, the problem likely lies in one of the following:
* Worn brake shoes: This is the most common cause. The shoes are simply worn out and need replacing.
* Worn or damaged brake drums: The drums themselves can wear down or become scored, reducing effectiveness.
* Cable stretching or damage: While there's no external adjuster, the cable itself can stretch or become frayed, limiting its ability to pull the shoes.
* Internal mechanism failure: Issues within the drum brake assembly could prevent self-adjustment.
What to do:
1. Check the brake fluid level: Make sure your brake fluid reservoir is full. Low fluid indicates a leak somewhere in the system.
2. Inspect the parking brake cable: Look for any obvious damage, kinks, or fraying.
3. Take it to a mechanic: Because of the drum brake design and the lack of an external adjuster, attempting to "fix" a weak parking brake yourself is generally not recommended. A mechanic can diagnose the problem accurately (worn shoes, damaged drums, cable issue) and perform the necessary repairs. Attempting DIY repairs on brakes without proper knowledge can be dangerous.
In short, don't try to adjust the parking brake on a 1999 Chevy Metro yourself. Instead, have a qualified mechanic inspect and repair the system. A failing parking brake is a safety hazard.
