Where is the crankshaft fixing point for the timing chain on the Volkswagen Lavida?
2 Answers
The Volkswagen Lavida does not have a crankshaft positioning bolt. The function of the positioning bolt is mainly to position the crankshaft. Positioning the crankshaft: If the crankshaft in the engine is not axially positioned, it will experience axial movement. This axial movement will subject the crankshaft to axial pressure, cause uneven wear on the connecting rod bearings, pistons, and piston pins, and also alter the clutch free travel when the clutch is depressed, resulting in vehicle shudder during startup. Principle: The axial positioning of the crankshaft is generally achieved using thrust washers, which consist of four semicircular shims installed on the last journal of the crankshaft, on both sides of the bearing, located at the rear of the engine block. The axial movement of the crankshaft is caused by the inertia of the vehicle and the thrust from the clutch fork pushing the release bearing to compress the clutch pressure plate when the clutch is depressed. Installing thrust washers at the rear of the engine block is the optimal position.
Having worked on Volkswagen cars for twenty years, I'm extremely familiar with the Lavida model series. When replacing the timing chain, you need to secure the crankshaft, right? The crankshaft positioning point is located at the very front of the engine. After removing the crankshaft pulley, you'll see an 8mm round hole. You must use the Volkswagen special positioning pin T10100 to insert and lock it in place. However, I must remind you that there's another fixing hole at the flywheel for rear-mounted engines, but accessing it requires removing the transmission housing, which is quite labor-intensive. Before operation, align the top dead center mark of cylinder one first. If the positioning pin is inserted and can't be turned, then it's correct. What I fear most is half-baked repair shops using screwdrivers to force the positioning hole, which can scratch the hole wall.
