T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
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|---|---|
AZ4007443020
Sinotruk HOWO
| Attribute | Description |
|---|---|
| Part Name | Right Front Disc Brake Caliper Assembly / Right Front Brake Clamp Housing |
| OEM Number | AZ4007443020 (also written as 4007443020) |
| Position | Mounted on the right front wheel hub — front axle, passenger side |
| Brake Type | Ventilated disc brake system |
| Material | High-strength cast iron or alloy steel with anti-corrosion coating |
| Compatible Rotor Size | Designed for ~14-inch (355–380 mm) diameter brake discs |
| Design Type | Floating caliper (single or dual piston), compatible with standard pad set |
| Dimensions | Standard OEM size — engineered to fit original mounting brackets |
| Weight | Approx. 6.8 kg (individual caliper weight; total assembly may vary) |
| Condition | Brand new (OEM original or premium aftermarket) |
| Warranty | Typically 12 months against manufacturing defects |
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Verify Compatibility Before Purchase
Confirm truck model, axle type, and rotor diameter.
Some HOWO variants use slightly different caliper designs.
Professional Installation Required
Involves working on critical safety systems — must be done by certified technicians.
Improper installation can lead to brake failure or uneven wear.
Bleed the Brake System
After installation, bleed all air from the hydraulic lines.
Use correct brake fluid specification (typically DOT 4).
Check Alignment and Clearance
Ensure caliper slides freely and does not rub the rotor.
Misalignment causes noise, drag, and premature wear.
Use New Brake Pads
Always install fresh pads when replacing calipers.
Worn or mismatched pads affect braking balance.
Inspect Brake Lines & Hoses
Replace cracked, swollen, or aged hoses to prevent leaks.
Secure all connections tightly.
Torque Mounting Bolts Correctly
Use torque wrench — typically 80–100 Nm depending on model.
Over-tightening can crack housing or strip threads.
Replace Seals and Dust Boots
Use repair kit (AZ4007443020-KIT) if rebuilding instead of full replacement.
Prevents internal contamination and piston seizure.
Test Function Before Full Load
Conduct low-speed brake test in controlled environment.
Check for pulling, vibrations, or sponginess.
Do Not Operate With Leaks
Any sign of brake fluid leakage requires immediate attention.
Driving with compromised brakes is extremely dangerous.
