Link lower bolt Camshaft gear bolt Rear flange screw for Volvo Eccentric bolt 985201

Product Description:

Camber correction screw
OE NO.:   985201

Applicable vehicle type: For Volvo

During engine operation, the camshaft gear is typically driven to rotate by the crankshaft via a timing chain or timing belt. The camshaft gear bolt must withstand centrifugal forces caused by high-speed rotation and periodic vibrational loads, while ensuring the relative position between the gear and camshaft remains stable. Therefore, the camshaft gear bolt must possess sufficient strength and fatigue resistance to ensure the engine maintains the correct timing relationship under various operating conditions.

Camshaft gear bolts are extensively employed in various automotive engines, serving as a critical component of the engine's timing system. Their primary applications include:

• Engine timing systems: Virtually all engines utilising camshaft gear drives (such as conventional petrol engines, hybrid engines, etc.) employ camshaft gear bolts to secure the timing gears.
• Timing Chain/Belt Drive: Camshaft gear bolts connect the camshaft to the timing sprocket or timing pulley. In chain-driven engines, these bolts secure the sprocket to the camshaft, with the chain driving the camshaft via the sprocket. In belt-driven engines, the principle is similar, but the transmission component is a belt.
• Variable Timing Control: In engines equipped with Variable Camshaft Timing (VCT) systems, the camshaft gear may incorporate VCT actuators or hydraulic adjusters. The camshaft gear bolts must not only secure the gear but also ensure axial positioning of the VCT components.

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