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Weichai WP10 Engine Spare Parts 612600061530 612600061256 Belt Tensioner Assembly Shacman Sinotruck FAW Truck Accessories

The Belt Tensioner Pulley (Part No. 612600061530) is an original equipment (OE) automatic tensioner produced by Weichai Power, specifically engineered for use on WP10 and WP12 series diesel engines. As a critical component of the engine’s front-end accessory drive (FEAD) system, it ensures consistent and reliable tension across multiple V-belts or serpentine belts that power essential accessories such as the cooling fan, alternator, air conditioning compressor, and water pump.

Featuring an integrated spring-loaded arm and precision-mounted pulley wheel, this tensioner automatically compensates for belt elongation due to wear, heat expansion, or load variation — significantly reducing slippage, noise, vibration, and premature belt failure. Its robust construction, high-quality sealed bearing, and fatigue-resistant torsion spring make it ideal for continuous operation under the extreme conditions found in long-haul freight, mining, and construction environments.
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  • 612600061530 

  • FAW

Attribute Description
Product Name Automatic Belt Tensioner / Tensioner Pulley Assembly
Manufacturer Weichai Power Co., Ltd. (China)
Type Spring-loaded automatic belt tensioner with roller pulley
Function Maintains optimal belt tension; prevents slippage and extends belt life
Application Front engine accessory drive system (fan, alternator, AC, etc.)
Pulley Material Hardened steel shell with anti-corrosion coating
Bearing Type Sealed ball bearing – pre-lubricated for life
Tension Mechanism Internal coil or torsion spring with damping control
Quality Standard Meets Weichai OE specifications; tested for durability, noise, and load consistency
皮带张紧器总成-1


皮带张紧器总成-2


Parameter Value / Detail
OEM Part Number 612600061530
HS Code 8483.50 (Pulleys and transmission wheels)
Tensioner Type Automatic self-adjusting tensioner
Operating Principle Spring-actuated lever arm maintains constant pressure
Compensation Ability Automatically adjusts for belt stretch and thermal expansion
Rotation Direction Typically clockwise (depends on mounting orientation)
Mounting Style Bolt-on flange mount with pivot point
Torque Capacity Designed to maintain 80–150 Nm effective tension (varies by belt layout)
Service Life Approx. 80,000 – 120,000 km under normal conditions
Noise Level Low operational noise; squealing indicates wear or failure
Weight Approx. 1.3 kg – 1.8 kg


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