1. Introduction
Thank you for choosing the Wheeltop 7800PRO Ceramic Hydraulic Caliper. This manual provides essential information for the proper installation, operation, and maintenance of your new hydraulic disc brake system. Please read this manual thoroughly before use to ensure optimal performance and safety.
2. Key Features
The Wheeltop 7800PRO Ceramic Hydraulic Caliper incorporates advanced design and technology for superior braking performance:
- CNC One-Piece Molding: Ensures high precision and structural integrity.
- Shark Spine Cooling Fins: Designed for enhanced heat dissipation.
- High-Efficiency Heat Dissipation: Maintains consistent braking power under demanding conditions.
- Unidirectional Oil Circuit: Optimizes fluid flow for efficient braking.
- Precision to the Millimeter: Engineered for exact fit and function.
- Full Ceramic Pistons: Provides excellent heat resistance and durability.
- Combines Aesthetics with Lightweight Design: Offers a sleek look without compromising on weight.
3. Specifications
| Attribute | Value |
|---|---|
| Model Name | 7800PRO Paint Clamp (Oiled) |
| Type | Hydraulic Disc Brake |
| Braking System | Hydraulic Disc Brake (Hydraulic Brake Pad) |
| Front Caliper Weight | 0.130 kg |
| Rear Caliper Weight | 0.155 kg |
| High-concerned chemical | None |
| Origin | Mainland China |
4. Setup and Installation
Proper installation is crucial for the safety and performance of your hydraulic disc brakes. If you are unsure about any step, it is recommended to seek assistance from a qualified bicycle mechanic.
4.1 Pre-Installation Check
- Ensure all components are present and undamaged.
- Verify compatibility with your bike frame, fork, and rotors.
- Confirm that your brake fluid is MINERAL OIL ONLY. Using other fluid types can damage the system.
4.2 Caliper Mounting
- Attach the calipers to your bike's frame and fork using the appropriate mounting hardware (Post Mount or IS Mount adapter, if needed).
- Ensure the caliper is centered over the rotor. Adjust as necessary to prevent rotor rub.
- Tighten mounting bolts to the manufacturer's recommended torque specifications.
4.3 Brake Lever and Hose Connection
- Mount the brake levers on your handlebars in a comfortable and accessible position.
- Connect the hydraulic hoses to the calipers and levers. Ensure all connections are secure and free from leaks.
- Route the hoses along your bike frame, securing them with cable ties or frame clips to prevent snagging.
4.4 Bleeding the System
After installation, the hydraulic system must be bled to remove any air bubbles and ensure proper brake function. Refer to a detailed hydraulic brake bleeding guide for your specific setup. Use only mineral oil for bleeding.
4.5 Pad Bedding-In
New brake pads require a bedding-in process to achieve full braking power. Ride your bike at a moderate speed and apply the brakes firmly but gradually about 20-30 times. Avoid sudden, hard braking during this process. This will transfer pad material to the rotor, improving friction.
5. Operating Your Brakes
Your Wheeltop 7800PRO hydraulic disc brakes provide powerful and consistent stopping power. Familiarize yourself with their feel before riding in challenging conditions.
- Brake Lever Feel: The brake levers should feel firm and consistent throughout their travel. A spongy feel indicates air in the system, requiring bleeding.
- Modulation: Hydraulic brakes offer excellent modulation, allowing you to control braking force precisely. Practice applying varying pressure to the levers to understand their response.
- Wet Conditions: Braking performance may be slightly reduced in wet conditions. Apply brakes earlier and with more caution.
6. Maintenance
Regular maintenance will prolong the life of your brakes and ensure safe operation.
6.1 Cleaning
- Clean calipers and rotors regularly with a clean cloth and isopropyl alcohol or a dedicated disc brake cleaner.
- Avoid getting oil, grease, or other contaminants on the brake pads or rotors, as this will severely degrade braking performance.
6.2 Brake Pad Inspection and Replacement
- Inspect brake pads regularly for wear. Replace pads when the friction material is worn down to approximately 0.5mm or less.
- Always replace both pads in a caliper at the same time.
6.3 Hydraulic Fluid Check and Bleeding
- Check the brake fluid level periodically. If the fluid level is low or the brake feel becomes spongy, the system may need bleeding.
- Only use mineral oil for your Wheeltop 7800PRO brakes.
6.4 General Warning
DO NOT DISMANTLE the caliper. Unauthorized disassembly can lead to brake failure and voids any warranty.
7. Troubleshooting
This section addresses common issues you might encounter with your hydraulic disc brakes.
| Problem | Possible Cause | Solution |
|---|---|---|
| Spongy Brake Lever | Air in the hydraulic system | Bleed the brake system. |
| Poor Braking Power | Contaminated pads/rotor, worn pads, air in system, improper bedding-in | Clean pads/rotor, replace pads, bleed system, re-bed pads. |
| Brake Noise (Squealing/Grinding) | Contaminated pads/rotor, misaligned caliper, worn pads, loose bolts | Clean pads/rotor, realign caliper, replace pads, check bolt tightness. |
| Rotor Rubs on Pads | Misaligned caliper, bent rotor, sticky piston | Realign caliper, true rotor, clean pistons. |
| Brake Lever Sticks | Contaminated lever pivot, internal seal issue | Clean and lubricate lever pivot. If issue persists, professional service is recommended. |
8. User Tips
- Always use a torque wrench when tightening bolts to prevent over-tightening or under-tightening, which can lead to damage or failure.
- Keep spare brake pads on hand, especially if you ride frequently or in varied conditions.
- After washing your bike, check your brakes for proper function and re-bed them if necessary.
- Store your bike in a way that avoids prolonged pressure on the brake levers, which can sometimes lead to air ingress or fluid issues.
9. Warranty and Support
For warranty claims or technical support, please contact the retailer or manufacturer directly. Keep your proof of purchase for any warranty-related inquiries. Please note that unauthorized modifications or dismantling of the product may void the warranty.
