Brake System Guide
Learn about brake components, maintenance procedures, and when to repair vs replace in CMS 2021.
Brake Components
The brake system consists of these key parts, each critical for safe stopping:
| Component | Function | Repairable? |
|---|---|---|
| Brake Disc/Rotor | Friction surface that stops the wheel | Yes (Lathe) |
| Brake Pads | Friction material pressed against the disc | No (Replace only) |
| Brake Caliper | Houses pistons that squeeze the pads | Yes (Welder) |
| Brake Master Cylinder | Generates hydraulic pressure | Yes (Welder) |
| Brake Line | Carries brake fluid to calipers | No (Replace only) |
| ABS Module | Prevents wheel lockup during braking | Yes (Welder) |
| Brake Fluid | Hydraulic fluid that transfers force | No (Replace only) |
Maintenance Checklist
High
Check Brake Pad Thickness
Inspect pad wear regularly. Thin pads reduce braking power and can damage the rotor.
High
Inspect Brake Disc Condition
Worn or grooved discs should be resurfaced on the lathe or replaced if below minimum thickness.
Medium
Replace Brake Fluid
Old brake fluid absorbs moisture, reducing braking effectiveness. Replace every 2 years.
Medium
Bleed the Brake System
Air in the brake lines causes a spongy pedal. Bleed all four corners after any brake work.
High
Check Brake Lines for Leaks
Damaged lines cause fluid loss and brake failure. Replace immediately if found.
Repair vs Replace
🔴
Below 30%
Replace immediately. Repair is not cost-effective.
🟡
30% – 70%
Repair using appropriate station. Good value for money.
🟢
Above 70%
Continue using. No action needed.
Pro Tips
- ⚙️Use the brake test stand to verify system performance after repairs
- ⚙️Brake discs can be resurfaced on the lathe — much cheaper than replacing
- ⚙️Always replace brake pads in axle pairs (both front or both rear)
- ⚙️Don't forget to bleed brakes after replacing calipers or master cylinder
- ⚙️Site under active development — car-specific tuning presets coming soon to maximize your resale value