What is the size of the crankshaft pulley bolt for the Volkswagen EA211?
2 Answers
Volkswagen EA211 crankshaft pulley bolt is 22mm. A 22-point star socket is used for this bolt. When removing this bolt, be cautious of timing misalignment, and special tools are required for installation. Marking position: Tighten with a torque wrench, which has markings; tighten to approximately the indicated position. Torque standard for crankshaft bearing cap bolts: For gasoline engines, it's about 100N, and for diesel engines, it's about 200N. Composition of the crankshaft: It consists of main journal, connecting rod journal, crankshaft arm, counterweight, front shaft end, and rear shaft end. One connecting rod journal, along with the two adjacent crankshaft arms and the front and rear main journals, forms a crank throw. There are two types: one-piece and assembled.
The crankshaft pulley bolt size for the Volkswagen EA211 engine is typically M12x1.5mm, which means a nominal diameter of 12mm and a pitch of 1.5mm. As someone who frequently modifies cars, I find this size crucial because if the bolt is too tight or too loose, it can cause the pulley to loosen and detach, leading to chain skipping or even engine damage. I recommend always using a torque wrench to set the correct torque when replacing it, with the factory recommendation being around 90 to 100 Nm. Additionally, it's important to check if the washers and thread locker have aged. This specification applies to most EA211 models, such as the 1.4T versions used in the Passat and Golf, but there might be minor variations for different model years. It's best to refer to the repair manual or use professional tools for measurement. If the bolt doesn't fit, don't force it, as this could damage the crankshaft journal and affect the entire engine's operation. I've installed it once myself, and taking the time to prepare the right wrench is essential.
