Shandong Shengyue Technology Development Co.,Ltd is one of the most professional sitrak c7h sitrak t7h truck brake chamber wg90000360660/ wg90000360661 from sinotruk company manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
SITRAK C7H SITRAK T7H truck Brake Chamber WG90000360660/ WG90000360661 FROM SINOTRUK COMPANY
When the brake pedal is depressed, compressed air enters the air chamber, actuating the pushrod and camshaft; this causes the brake shoes to expand and press against the brake drum (or disc), thereby generating braking force.
FUNCTION
1. Service Brake Function:When the driver depresses the brake pedal, compressed air enters the working chamber of the air actuator, driving the diaphragm and pushrod outward. This action, transmitted via a camshaft or brake arm, forces the brake shoes against the brake drum or disc, generating braking force to decelerate or stop the vehicle.
2. Parking & Emergency Brake Function:Featuring a built-in spring brake chamber, the unit utilizes compressed air to compress the spring and keep the brake released under normal operating pressure. In instances of insufficient air pressure, parking, or emergency situations, the spring automatically releases, driving the pushrod to apply braking force and ensure reliable parking and emergency braking. Even in the event of a complete loss of air pressure, the system continues to provide sufficient braking force to ensure safety.
3. Force Conversion and Amplification Function:Through its diaphragm structure, the unit efficiently converts pneumatic energy into mechanical thrust, thereby amplifying the braking force and enabling precise control to ensure rapid brake response and stable braking torque.
4. Dual-Chamber Collaborative Function:The dual-diaphragm design allows the service brake and the parking/emergency brake to operate independently yet cooperatively, thereby enhancing the safety redundancy of the braking system.
5. System Safety Assurance Function:As a critical actuating component within the pneumatic braking system, it directly influences the vehicle's braking performance and operational safety, providing reliable braking assurance-particularly under heavy loads, during long descents, or in complex road conditions.
Brief Description of Operating Principles
1. Service Brake:
When the driver depresses the brake pedal, compressed air enters the front service chamber through its designated port. This air pressure pushes the diaphragm forward, causing the pushrod to extend. Acting through the brake slack adjuster and camshaft, the system drives the brake shoes to press against the brake drum (or disc), generating braking force to decelerate or stop the vehicle.
2. Parking / Emergency Brake:
When the parking brake control handle is engaged (pulled), the compressed air within the parking chamber (typically connected via Port 12) is exhausted. The chamber's internal, high-force energy-storage spring automatically releases, pushing the pushrod forward to apply braking force, thereby achieving parking or emergency braking. Even in the event of a complete loss of air pressure in the vehicle's system, the spring force remains capable of providing reliable braking.
3. Releasing the Parking Brake:
Upon disengaging (releasing) the parking brake control handle, compressed air re-enters the parking chamber. This air pressure compresses the energy-storage spring, causing it to retract; the pushrod subsequently retracts, thereby releasing the brake.
4. Dual-Chamber Independent-yet-Cooperative Operation:
The service chamber and the parking chamber function independently of one another while working cooperatively. During normal driving, the parking chamber maintains air pressure, and only the service chamber activates in response to brake pedal inputs. In emergency situations or instances of air pressure loss, the spring chamber automatically intervenes to provide an additional layer of safety protection.
5. Reset Process:
Once the brake is released, the diaphragm returns to its original position under the action of the return spring; the pushrod retracts, and the brake shoes disengage.
Performance Characteristics
| Performance Characteristic | Detailed Description |
|---|---|
| Rapid Response | High-efficiency diaphragm structure delivers fast air pressure response and short pushrod stroke, ensuring quick braking action and reduced braking distance. |
| Strong Braking Force | Double diaphragm design (T24/24 type) provides powerful and stable braking torque, suitable for heavy-duty HOWO trucks under full load or high-speed conditions. |
| Excellent Safety & Reliability | Combines service brake and spring parking/emergency brake functions; maintains reliable braking even in case of air pressure loss, meeting strict safety standards. |
Installation Location
It is mounted to the rear axle brake backing plate or the brake camshaft bracket, secured firmly to the backing plate via bolts.
The pushrod end of the air chamber connects to the brake slack adjuster via a clevis; the slack adjuster, in turn, connects to the camshaft, ultimately actuating the brake shoes.
DETAILS
| DESCRIPTION | Middle/Rear Axle Final Drive Case | PART NUMBER | HD90149326082/HD90149326080 |
| WEIGHT |
80KG |
VOLUME |
|
| TRUCK MOLDE | SANY | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CHASSIS |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Maintenance Recommendations
1. Routine Leak Checks:Before setting out or after parking each day, carefully inspect the air chamber connections, diaphragm edges, and air lines for any leaks. Any detected leaks must be addressed immediately to prevent compromising braking performance.
2. Check Pushrod Stroke:Every 5,000–10,000 kilometers, verify that the pushrod stroke falls within the specified range. Excessive or insufficient stroke can result in improper brake clearance; the brake slack adjuster clearance must be adjusted promptly.
3. Periodic Inspection of Diaphragms and Springs:Every 20,000–30,000 kilometers or every 6 months, inspect the diaphragm for signs of aging, cracking, or deformation, and check the parking brake spring for failure. A damaged diaphragm or fatigued spring can lead to brake drag, parking brake failure, or a risk of total brake malfunction.
4. Maintain Cleanliness and Rust Prevention:Regularly remove accumulated mud, grime, and rust from the exterior of the air chamber to prevent foreign objects from entering the connections or corroding the housing. Pay particular attention to cleaning frequency when operating in mining areas, rainy conditions, or on roads with high salt or alkali content.
5. Synchronized Replacement and System Inspection:When replacing an air chamber, it is recommended to replace the units on both the left and right sides simultaneously. At the same time, inspect the condition of the brake shoes, brake drums, camshafts, and slack adjusters. Following replacement, it is mandatory to bleed the brake system and perform a break-in test.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Hot Tags: sitrak c7h sitrak t7h truck brake chamber wg90000360660/ wg90000360661 from sinotruk company, manufacturers, suppliers, factory, parts, genuine, original, Original Sinotruk Man axle parts, Sinotruk SITRAK Clutch plate, SITRAK CHASSIS SPARE PARTS, Sitrak Man axle spare parts, SITRAK truck Air control valve, SITRAK truck Release Bearing
