Brake Air Booster with Steel Housing Construction for HINO 500 Series J08C Diesel Engine - JIS 1000-Hour Salt Spray Tested OEM Direct-Fit
Basic Properties
Place of Origin:
CHINA
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
J08C
Trading Properties
Minimum Order Quantity:
20 PCS
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| Package Size: | 60 × 20 × 20 Cm | Housing Material: | Steel |
| Unit Weight: | 10 Kg | Salt Spray Test: | JIS 1,000 Hours |
| Working Pressure: | 90-100 Psi (≈6.2-6.9 Bar) | Engine Compatibility: | HINO J08C Diesel Engine |
| Vehicle Models: | HINO 500 Series | OEM Part Number: | 44640-3561 / 446403561 |
| High Light: | JIS 1000-Hour Salt Spray Tested Brake Air Booster,Steel Housing Construction Brake Air Booster,OEM Direct-Fit Brake Air Booster |
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Product Description
HINO 500 Brake Air Booster 44640-3561 446403561
Verified OEM Direct-Fit for J08C Diesel Engine Air Brake System
Product Overview
This Brake Air Booster is a verified direct-fit replacement for HINO 500 series trucks, with OEM numbers 44640-3561 / 446403561. The booster is a critical component of the air brake system, installed on the brake chamber to amplify brake pedal pressure signals and drive the brake chamber push rod to generate sufficient braking force.
Designed for HINO 500 series equipped with J08C diesel engines, it offers bolt-on fitment without modification.
Working Principle
The air brake booster is a power-assist device in the braking system. Its core function is to amplify the air pressure signal generated when the driver depresses the brake pedal. Inside the booster, a diaphragm and valve assembly proportionally magnifies the control pressure from the brake master valve and delivers it to the brake chamber, pushing the push rod to press the brake shoes against the drum for braking.
The booster typically features a dual-circuit design, ensuring basic braking capability even if one circuit fails.
Failure Symptoms
- Brake pedal feels hard or spongy; slow return after release
- Delayed brake response; braking force output lags behind pedal input
- Vehicle pulls to one side or brakes unevenly
- Audible air leak (hissing sound) near the booster area
- Brake chamber fails to respond quickly to pedal commands; stopping distance increases significantly
These symptoms indicate that the booster's internal diaphragm, seals, or valve body have worn or failed. Prompt replacement is required to prevent further brake system degradation.
Quality Verification
- Material Verified: Booster housing manufactured from steel, meeting OEM strength requirements
- JIS Salt Spray Tested: Passed JIS standard 1,000-hour salt spray test (exceeding ISO 9227 standard)
- OEM Cross-Reference Verified: Replaces OEM 44640-3561 / 446403561
- Dimensions & Weight Verified: Package size 60*20*20cm, unit weight 10kg
- ISO Certified: Product manufactured under ISO and TS 16949 quality systems
Technical Specifications
| Part Number | 44640-3561 446403561 |
| Product Name | Brake Air Booster |
| Car Model | HINO 500 |
| Engine Model | J08C |
| Condition | 100% Brand New |
| Material | High-strength aluminum alloy & precision bearings |
Vehicle Compatibility
| Brand | Model | Engine | Application |
|---|---|---|---|
| HINO | 500 Series | J08C Diesel | Brake Air Booster |
| HINO | Ranger | J08C | Brake System |
Important Notes:
- This is a brake air booster installed on the brake chamber; it works in conjunction with the brake chamber assembly
- Provide chassis number or VIN before ordering to confirm exact match with 44640-3561
- Some HINO 500 variants across different production years may use different booster versions
- Confirm the booster-to-chamber connection port specification matches during installation
Features & Benefits
Steel Housing Construction
Withstands high-pressure pneumatic loads with structural integrity
JIS 1,000-Hour Salt Spray Test
Superior corrosion resistance vs. industry standard
OE-Matched Dimensions
Bolt-on installation without modification
Dual-Circuit Safety Design
Maintains basic braking if one circuit fails
ISO/TS 16949 Certified
Consistent batch quality assured
In-Stock Availability
Reduced downtime for repairs
Quality Control Standards
| QC Item | Verification Method / Standard |
|---|---|
| Housing Material | Spectrometer verification of steel composition |
| Seal Performance | Pneumatic seal test to verify diaphragm and valve body leak-free |
| Working Pressure Test | Tested at 90-100 psi (≈6.2-6.9 bar) for booster response |
| Salt Spray Corrosion | JIS standard 1,000-hour salt spray test |
| Dimensional Inspection | Caliper / dedicated gauge for mounting interface |
| Appearance & Marking | Visual inspection, OEM number clearly marked |
| Outgoing Sampling | Batch sampling per AQL standard |
Installation & Maintenance
Critical Safety Advisory: Brake booster replacement involves a core component of the pneumatic braking system and must be performed by a qualified technician. Before installation, ensure system air pressure is fully released to avoid high-pressure injury.
Installation Guidelines
- Apply parking brake, shut off engine, and release compressed air from the system
- Disconnect the air lines connected to the booster; mark line positions
- Remove mounting bolts, take out the old booster, and clean the mounting surface
- Install the new booster, ensure the gasket is intact, and tighten mounting bolts to specified torque
- Reconnect the air lines, ensuring fittings are secure and leak-free
- Start the engine, charge system air pressure to normal operating level (90-100 psi)
- Perform a brake pedal response test; confirm normal brake response with no delay
Maintenance Schedule
- Every 5,000 km: Check brake system air pressure and inspect booster area for signs of leakage
- Every 20,000 km: Inspect booster appearance and seal condition; test brake pedal response
- Every 40,000 km: Full brake system inspection including booster, brake chambers, and air lines
- If brake response slows, pedal feels abnormal, or hissing is heard, inspect the booster immediately
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