The 1987 Polaris Sportsman 110, while a classic ATV, requires proper brake maintenance to ensure safe and reliable operation. This article will guide you through understanding the brake system, common problems, and effective maintenance procedures. Let's dive into keeping your vintage Sportsman in top riding condition.
Understanding the 1987 Polaris Sportsman 110 Brake System
The '87 Sportsman 110 likely features a relatively simple braking system, probably using drum brakes on the rear wheels. These systems are mechanical, relying on cable actuation and the friction between brake shoes and the drum to slow or stop the ATV. Unlike more modern disc brake systems, drum brakes require regular maintenance to compensate for wear and tear.
Key Components:
- Brake Cables: These transmit the force from the brake lever to the brake shoes. Check for fraying, corrosion, or stretching.
- Brake Shoes: These are the friction surfaces that contact the drum to create braking force. Look for wear, scoring, or glazing.
- Brake Drum: This is the rotating cylinder that the brake shoes press against. Inspect for scoring, excessive wear, or warping.
- Brake Lever: This is the control mechanism that the rider uses to apply the brakes. Check for proper function and free movement.
Common Problems and Troubleshooting
Several issues can arise with the 1987 Sportsman 110's brake system. Recognizing these problems and addressing them promptly is crucial for safe riding.
1. Weak or Ineffective Braking
- Cause: Worn brake shoes, stretched or damaged brake cables, contaminated brake drums, or low hydraulic fluid (if applicable, though less likely on an '87 model).
- Solution: Inspect brake shoes for wear. Replace if necessary. Check and adjust or replace brake cables. Clean the brake drum thoroughly. If hydraulic fluid is involved, consult a repair manual before attempting any fluid changes.
2. Spongy or Soft Brake Lever
- Cause: Air in the hydraulic system (unlikely, but possible with some brake configurations). Also could indicate worn or damaged components.
- Solution: If the system is hydraulic, bleed the brakes to remove air. If not hydraulic, check cables and mechanical linkages for proper adjustment and operation.
3. Brake Noise (Squeaking or Grinding)
- Cause: Worn brake shoes, contaminated or damaged brake drums, or foreign materials within the brake assembly.
- Solution: Inspect brake shoes and drum for wear and damage. Clean the brake drum and shoes. Replace worn parts.
Maintenance and Repair
Regular maintenance is key to preventing brake problems.
1. Brake Inspection
Regularly inspect your brake system for wear, damage, and proper operation. Check cables for fraying or damage, and inspect the brake shoes for wear. Check for fluid leaks if hydraulics are used.
2. Brake Adjustment
Most likely, you'll need to adjust your brake cables. Consult your owner's manual for precise adjustment instructions. Improper adjustment can lead to inadequate braking or excessive lever effort.
3. Brake Cleaning
Keep the brake components clean and free of debris. Dirt, mud, and other contaminants can compromise braking performance.
4. Parts Replacement
Worn brake shoes and damaged cables must be replaced. Don't attempt repairs if you lack mechanical experience; consult a qualified mechanic for any major repairs or overhauls.
Resources for Parts and Manuals
Finding parts for a 1987 Polaris Sportsman 110 might require searching online ATV parts retailers or contacting specialized Polaris parts suppliers. Consider looking for a service manual online or at a local ATV repair shop to access detailed diagrams and procedures.
Remember, regular maintenance and prompt attention to any issues will ensure the safe and reliable operation of your 1987 Polaris Sportsman 110's brake system, keeping you safe on the trails.
