What is the difference between clutch booster and brake booster?

What is the difference between clutch booster and brake booster?
1. Function positioning difference
The clutch booster is designed for manual transmission. Its core functions are:
Amplify the pedal force by 5–8 times (the boost ratio of ordinary cars is about 1:6.5)
Help to completely separate the friction plate (stroke control accuracy ±0.5mm)
Achieve fast return (reset time ≤0.3 seconds)
For example, the clutch booster Isuzu systems are engineered specifically to meet the operational demands of heavy-duty vehicles, offering consistent performance in high-load environments.
vacuum brake booster
The brake booster serves the braking system:
The typical boost ratio is more than 1:10 (SUV models can reach 1:12)
It is necessary to establish continuous hydraulic pressure (working pressure is usually 2–4 MPa)
Equipped with emergency brake assist function (pressure rises suddenly when EBA system intervenes)

2. Comparison of structural principles
Structural features of clutch booster:
Using diaphragm air chamber (diameter 80–120mm)
Hydraulic piston diameter is usually 18–25mm
Integrated accumulator (pre-stored pressure 0.4–0.6MPa)
Typical structure includes:
Control valve body
Hydraulic cylinder
Air pressure chamber
Push rod mechanism
China has become a major source for these products. A clutch booster factory in China typically specializes in large-scale production with strict quality control, making it a competitive supplier in the global aftermarket.

Brake booster core components:
Vacuum chamber (diameter 200–300mm)
Dual diaphragm design (standard for modern models)
Electronic vacuum pump (essential for new energy vehicles)
Key subsystems:
Vacuum check valve
Input push rod group
Reaction plate mechanism
Hydraulic master cylinder interface
Leading brake booster manufacturers focus on performance, safety certification, and electronic integration to meet the rising demand in both traditional and EV platforms.

3. Differences in working characteristics

Parameters
 Clutch Booster
 Brake Booster
Working pressure
 0.8–1.2MPa
 2–4MPa
Response time
 50–80ms
 30–50ms
Stroke
 120–150mm
 40–60mm
Temperature range
 -30℃~120℃
 -40℃~150℃


4. Comparison of fault modes
Common faults of clutch booster:
Hydraulic oil pressure leakage (aging of sealing ring)
Assist failure (insufficient accumulator pressure)
Slow pedal return (return spring fatigue)

Typical faults of brake booster:
Vacuum leakage (damaged diaphragm)
Uneven assist (worn reaction plate)
Hard pedal (blocked check valve)

5. Maintenance points
Clutch booster maintenance:
Check hydraulic oil every 30,000 kilometers
Exhaust air regularly (recommended every 2 years)
Pay attention to pedal free travel (standard 10–15mm)

Brake booster maintenance:
Annual inspection of vacuum line
Keep engine compartment clean

Pay attention to brake fluid replacement cycle (2 years/40,000 kilometers)


Wuhu compass autoparts technology Co., Ltd is a clutch booster and brake booster manufacturer in China, KOMP is its brand name, KOMP can provide factory price clutch booster and brake booster, and provide one year or 30000KM warranty, if you want to buy good quality and affordable products, KOMP is your good choice!

What Tests Does the Brake Master Cylinder Undergo After Production?

What tests does the brake master cylinder undergo after production?
The brake master cylinder is one of the most critical safety components in any vehicle. Whether it’s for a mass-produced sedan or a performance vehicle, after production, the factory will undergo Air Tightness (Leakage) Test and Hydraulic Pressure Test. For some cylinder wholesalers, the products also need to undergo Functional Stroke Test and Endurance Test.
cylinder brake master
1. Air Tightness (Leakage) Test

The first test checks for internal and external leakage. The master cylinder is sealed and subjected to air pressure to simulate real operating conditions. Any pressure drop indicates a leak. This test is crucial for both custom brake master cylinder units used in modified vehicles and standard models to ensure no brake fluid or air escapes during use.

2. Hydraulic Pressure Test

Next, the cylinder undergoes a hydraulic pressure test to verify its ability to generate and maintain pressure under load. The cylinder is filled with brake fluid and pressurized. Engineers monitor the system to confirm that it can consistently maintain pressure without any loss. For an OEM brake master cylinder, this ensures it meets factory specifications and can safely integrate with the original braking system.

3. Functional Stroke Test

This test measures the stroke length of the piston inside the master cylinder. The stroke must fall within a specified range to ensure the brakes engage properly. If the stroke is too short or too long, it may indicate a manufacturing defect. This is particularly important for models such as the brake master cylinder Ford Ranger, which must meet strict performance requirements under varying load conditions.

4. Endurance Test

To simulate long-term use, some cylinders undergo endurance testing. The cylinder is cycled thousands of times under pressure to mimic years of braking activity. This helps identify early wear or failure points that wouldn’t appear in short-term testing.

For example, the Chinese brand KOMP comes from Wuhu Campass Autoparts Technology Co., Ltd. It is a high-quality brake master cylinder factory. Their products are inspected and tested for quality before being sold to customers to ensure that each product is usable. At the same time, KOMP provides a 1-year or 30,000 km warranty, which is the choice of many brake pump wholesalers.

Every brake master cylinder must undergo a rigorous series of tests to guarantee performance, safety, and reliability. Whether you're installing a custom brake master cylinder for enhanced performance, replacing an OEM brake master cylinder for factory-fit assurance, or ensuring the durability of a brake master cylinder Ford Ranger, these post-production tests are essential for road safety and customer trust.

Which Factory in China Produces Brake Wheel Cylinders?

Which Factory in China Produces Brake Wheel Cylinders?
When it comes to sourcing high-quality brake wheel cylinders from China, one name stands out in the industry — KOMP, the brand of Wuhu Campass Autoparts Technology Co., Ltd. Located in one of China’s key automotive parts manufacturing regions, KOMP has built a strong reputation for producing reliable, precision-engineered brake components for both domestic and international markets.
Brake wheel cylinder factory
KOMP specializes in a wide range of autoparts including brake wheel cylinders, brake master cylinders, clutch master cylinders, and clutch slave cylinders. Its expertise and advanced production facilities enable the company to meet diverse customer needs, from large-scale Wholesale brake wheel cylinder orders to specialized designs for specific vehicle models.

KOMP was founded in 2001 and has 24 years of professional experience in cylinder production. The company has more than 9,000 models of brake and clutch cylinders. No matter which OEM number of brake cylinder you need, it can produce it for you. The company has 16,000 square meters and 50 production lines. We provide fast delivery and low minimum order quantity, factory price, and have a professional service team to better serve you.

The raw materials used by KOMP brake wheel cylinder China supplier are all imported from Japan, such as EP35 rubber, ZL111 aluminum and high-quality cast iron. The product has high quality and long service life. The product can withstand the temperature test of -40℃ to 180℃. precisely machined to prevent fluid leaks, and rigorously tested to meet strict quality standards.

Regarding customization, KOMP can design logos and color box drawings for customers free of charge; it can also laser engrave products for customers free of charge, and can provide customers with better customization services.

Quality assurance is a top priority at KOMP. Every brake cylinder undergoes thorough inspection and performance testing before shipment. The company backs its products with a one-year or 30,000 km warranty, giving customers confidence in both durability and after-sales support. This commitment to reliability and service has helped KOMP maintain strong, long-term relationships with clients around the world.

For buyers seeking a trusted Chinese factory brake wheel cylinder, KOMP offers a winning combination of manufacturing expertise, customization capability, and quality assurance. Whether you need bulk orders for wholesale distribution or specialized designs for niche applications, Wuhu Campass Autoparts Technology Co., Ltd. delivers dependable solutions that keep vehicles safe and customers satisfied.

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Step-by-Step Guide to Rebuild Hino Truck Differential with 41331-1020 Kit

Why Use the 41331-1020 Repair Kit?

The Hino truck differential is critical for power distribution, but prolonged heavy-duty use often leads to planetary gear wear, bearing failure, or seal leaks. The Hino 41331-1020 Differential Planetary Gear Repair Kit offers a cost-effective solution (30–50% cheaper than full replacements) to restore differential performance with OEM-grade components:

  • Heat-treated alloy steel gears for 30% improved durability.

  • Complete rebuild set including bearings, shims, and seals.

  • Direct compatibility with Hino 300/500 series differentials.

Tools & Safety Precautions

Required Tools

  • Torque wrench (50–150 Nm range).

  • Bearing puller or differential-specific disassembly tools.

  • Dial indicator for gear backlash measurement.

  • High-temperature grease (e.g., GL-5 85W-90 gear oil).

Safety Measures

  1. Insulated gloves and boots are mandatory when handling components near electrical systems (e.g., nearby sensors or wiring) to prevent accidental shocks1.

  2. Secure the vehicle with hydraulic jacks and safety stands to avoid instability during disassembly4.

  3. Label all removed parts (e.g., axle shafts, drive shafts) to ensure correct reassembly5.

Rebuild Procedure

1. Differential Disassembly

  • Remove Axle Shafts and Drive Shaft:
    Unbolt the drive shaft using a socket wrench, marking alignment positions for reassembly. Extract axle shafts carefully to avoid damaging seals.

  • Drain Gear Oil:
    Place a drain pan beneath the differential housing and remove the fill plug.

2. Internal Component Inspection

  • Disassemble Planetary Gear Set:
    Extract the cross shaft retaining pins, then remove planetary gears, sun gears, and shims. Note shim thickness and order—critical for backlash adjustment4.

  • Check Bearings and Seals:
    Inspect bearings for pitting or discoloration. Replace if wear exceeds 0.1 mm.

3. Installing the 41331-1020 Kit

  • Assemble New Gears:
    Lubricate gears with high-temperature grease and install them in the original sequence. Ensure smooth meshing between the sun gear and planetary gears.

  • Replace Bearings and Seals:
    Use a press tool to install new bearings, maintaining vertical alignment. Install dual-lip seals for enhanced leak prevention.

4. Gear Backlash Adjustment

  • Measure Backlash:
    Use a dial indicator to check gear clearance (standard: 0.10–0.15 mm). Adjust shim thickness as needed4.

  • Torque Specifications:
    Tighten bearing cap bolts incrementally (80–100 Nm) in a cross pattern to ensure even pressure distribution.

5. Lubrication and Testing

  • Refill Gear Oil:
    Use Hino-approved GL-5 85W-90 oil (1.5–2 liters).

  • Road Test:
    Conduct low-speed tests to detect abnormal noises (e.g., whining or grinding). Verify smooth power transfer during acceleration.

Common Issues & Solutions

Symptom Likely Cause Solution
Post-installation noise Incorrect gear backlash Re-measure and adjust shims
Oil leaks Misaligned seals Reinstall seals with proper tools
Overheating Insufficient lubrication Verify oil level and quality

SEO Optimization Tips

Keyword Strategy

  • Primary Keywords:
    Hino 41331-1020 rebuild kit, Hino differential repair guide, OEM Hino planetary gear set.

  • Long-Tail Keywords:
    How to adjust differential gear backlash, Signs of Hino differential failure, Heat-treated Hino gear kit benefits.

Content Enhancements

  • Add a video tutorial (e.g., gear meshing verification) to improve user engagement.

  • Link internally to related articles like “Top 5 Symptoms of Hino Differential Failure”.

Image Optimization

  • Alt Tags:
    Hino 41331-1020 Differential Rebuild Process – Professional Installation.

  • File Names:
    hino-41331-1020-differential-repair-kit-installation.jpg.

Technical Insights & Data

  • High-temperature environments accelerate component wear; using heat-treated gears reduces failure rates by 25%4.

  • Google Trends shows a 12% annual increase in searches for differential repair kits, with peak demand in North America and Australia14.

Original Content Notice: This guide was created by [Your Company Name]’s technical team. Reproduction without permission is prohibited.

Recommended Reads:

  • How to Diagnose Hino Differential Gear Wear: A Mechanic’s Checklist.

  • OEM vs. Aftermarket Truck Parts: Cost and Performance Comparison.

This blog integrates technical depth, safety protocols, and SEO best practices to attract targeted traffic while ensuring user safety and operational efficiency.

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