How to align the timing belt of a 474 engine?
1 Answers
474 engine timing belt alignment method: 1. Align the crankshaft according to the marks on the crankshaft timing pulley, generally requiring the No. 1 cylinder piston to be at top dead center position; 2. Install the camshaft, align the marks on the timing pulley with the camshaft, and align the dual camshafts to their respective positions; 3. Install the timing belt or chain. The 474 engine refers to a 4-cylinder engine with a cylinder bore of 74mm. The timing belt is an important component of the engine's valve system, ensuring accurate intake and exhaust timing through its connection with the crankshaft and a specific transmission ratio. The reason for using a belt instead of gears for transmission is that belts produce less noise, have smaller variations, and are easier to compensate for. The lifespan of a belt is certainly shorter than that of metal gears, so it is necessary to replace the belt regularly.