The Refrigeration Compressor is a key component of the cab climate control system, responsible for compressing and circulating refrigerant to provide cool air. This complete drive system kit includes the compressor itself along with all necessary pulleys, belts, tensioners, and fasteners for a full installation on the Sitrak C7H.
The Refrigeration Compressor is driven by the engine’s front accessory drive, and its reliable operation depends on precise belt tension and alignment. This comprehensive kit ensures that every component is matched for optimal performance, reducing the risk of premature wear and system failure. For complete technical specifications and ordering details, please refer to the official Sinotruk Catalog, which provides comprehensive information on all available variants and compatible truck models.
This Refrigeration Compressor system is designed to deliver consistent cooling performance even in the most demanding operating conditions. Its robust construction and precision-engineered components ensure long-term reliability, making it an ideal choice for fleet operators and owner-drivers alike.
The Idler Pulley Assembly is used to guide the drive belt and adjust its tension, ensuring smooth and quiet operation of the Refrigeration Compressor. It consists of a precision-machined steel pulley with a sealed bearing that requires no maintenance. In this system, two idler pulleys are included to route the belt around the compressor and other accessories, providing the correct wrap angle for efficient power transmission. The pulley surface is coated to resist wear and corrosion.
This 8-ribbed belt, designated 8PK 1920, drives the Refrigeration Compressor and other front-end accessories. It is made of high-strength EPDM rubber with aramid fiber reinforcement, offering excellent durability and resistance to heat, oil, and wear. The belt’s 1920mm length and 8-rib profile ensure a perfect fit on the C7H engine, delivering reliable power transfer and minimizing slippage. Its advanced construction reduces noise and extends service intervals.
The Refrigeration Compressor is the heart of the air conditioning system, a heavy-duty axial piston compressor designed for the Sitrak C7H. It features a variable displacement mechanism that adjusts cooling capacity to match the cabin load, improving fuel efficiency. The compressor is equipped with a magnetic clutch that engages only when cooling is required, reducing parasitic drag. Its cast aluminum housing is lightweight and dissipates heat effectively, while the internal components are engineered for high reliability over millions of cycles.
These high-strength socket head cap screws are used to secure the compressor mounting bracket. Made from grade 10.9 alloy steel with a zinc-nickel coating, they provide excellent clamping force and corrosion resistance. The hexagon socket drive allows for precise torque application, ensuring a secure attachment that withstands the vibration and thermal cycling of the engine bay.
This flat washer is used under the hexagon socket head cap screws to distribute load and prevent surface damage. It is manufactured to DIN EN ISO 7089 standards with a hardness of 200HV and a zinc-plated finish, ensuring reliable performance and corrosion resistance. In the Refrigeration Compressor system, these washers help maintain proper clamping force over time.
These grade 10 hexagon nuts are used in conjunction with the socket head cap screws to secure the compressor bracket. Manufactured to GB/T6170 standards, they feature a fine-pitch thread and a zinc-plated finish for corrosion resistance. Their high strength ensures a durable fastening that maintains compressor alignment even under heavy vibration.
This countersunk screw is used for flush mounting of the tensioner bracket or other components. With an M10 thread and 70mm length, it is made of grade 10.9 steel and coated for corrosion resistance. Its countersunk head allows for a smooth surface finish, preventing interference with adjacent parts in the Refrigeration Compressor drive system.
The Automatic Tensioner Pulley maintains constant belt tension throughout the Refrigeration Compressor drive system, compensating for belt stretch and wear. It features a spring-loaded arm with a sealed bearing that provides consistent tension, reducing belt slip and noise. Its robust construction and vibration-damping design ensure long service life and reliable compressor operation.
The Refrigeration Compressor delivers consistent cooling power, ensuring a comfortable cab environment even in extreme heat. Its variable displacement design adjusts to the cooling demand, reducing fuel consumption and wear.
This kit includes everything needed for a full installation – the compressor, belt, pulleys, tensioner, and all fasteners. No additional parts are required, saving time and ensuring compatibility.
All components are manufactured from premium materials with corrosion-resistant coatings, ensuring long service life even in harsh environments. The belt and tensioner are designed for extended maintenance intervals.
The Refrigeration Compressor is manufactured to the exact OEM specifications, guaranteeing a perfect fit on the Sitrak C7H. The precision-machined components and matched hardware ensure a hassle-free installation.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.
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